What is osseous structures in lungs - When bone forms, osteoblasts are trapped within it and become part of the framework. They are then called osteocytes and maintain the bone structure. Inside some of the bones of the body is a space that is filled with bone marrow. Blood cells are made in the bone marrow. All blood cells develop from stem cells which are found in the bone marrow.

 
The vertebral column is the principal localization of the osseous metastases and is in many cases an indication of an advanced stage of a malignant primary disease [3,4]. Advanced lung cancer is diagnosed in over two thirds of the patients, a figure that correlates with a high mortality . In the majority of patients in lung cancer with bone .... Moto x3m ublocked

The systematic analysis of chest radiographic examinations involves the sequential assessment of various anatomic structures and interfaces and allows for a high level of confidence in the detection of abnormalities. The radiologist's detection, localization, and characterization of abnormal chest radiographic findings help guide the clinician to the appropriate follow-up imaging study or ...A bronchial tree (or respiratory tree) is the collective term used for these multiple-branched bronchi. The main function of the bronchi, like other conducting zone structures, is to provide a passageway for air to move into and out of each lung. In addition, the mucous membrane traps debris and pathogens.Introduction. Pulmonary osseous metaplasia or ossification of the lung is the presence of mature bone tissue within the lung parenchyma; it is a rare entity and is usually associated with some other form of chronic pulmonary disease, such as bronchiectasis, pneumonia or pulmonary fibrosis (1,2).Pulmonary osseous metaplasia is mostly …Treatments for painful osseous metastases may not only diminish pain, but may also improve quality of life and independence/mobility, and reduce skeletal morbidity, potential pathologic fractures, spinal cord compression, and other "skeletal-related events." Treatment strategies for painful osseous metastases include systemic analgesics ...Dec 23, 2021 · Abstract. Diffuse pulmonary ossification (DPO) is a rare condition of DLD (diffuse lung disease) characterized by the presence of metaplastic ectopic bone in the lungs and is less frequent in patients without a clear background of lung diseases. DPO is characterized by very small calcific nodules, often with bone mature located in both lungs ... See full list on verywellhealth.com Anterior cervical lymph nodes are those nearest the front of the neck.These typically swell when you have a cold or strep throat. Posterior cervical lymph nodes are located behind the band of muscles on the side of the neck.These often swell when you have infectious mononucleosis.; Occipital lymph nodes are located at the back of the neck at the base of the skull.HPOA most often causes inflammation of bones and joints in the wrists and ankles. Sometimes this shows up on bone scans or x-rays. Ankles and wrists can become swollen and inflamed, causing much pain and difficulty with movement. One of the most common symptoms of HPOA is a condition known as clubbing. This means: the nails seem to 'float ...Your thoracic spine is also surrounded by muscles, nerves, tendons and ligaments that help with movement and flexibility. Your spinal cord runs through the center of your entire spine. It sends and receives messages from your brain, which controls all aspects of your body’s functions. Advertisement.The walls of the diaphysis are composed of dense and hard compact bone. Figure 6.4.1 6.4. 1: \ Anatomy of a Long Bone A typical long bone shows the gross anatomical characteristics of bone. The wider section at each end of the bone is called the epiphysis (plural = epiphyses), which is filled with spongy bone.a visceral serosa that covers the surface of each lung. Parietal pleura. the parietal pleura lines the walls of the thoracic cavity. the pleural membranes produce pleural fluid. fluid produced by the pleural membrane that allow the lungs to glide easily over the thorax wall during breathing movements and causes the pleural layer to cling together.An example would be blood vessel calcifications which are related to aging and hardening of blood vessels. This develops over long periods of time. Another example would be an enlarged prostate gland which also develops over long periods of time. Scarring in the lung is a chronic finding. No acute intracranial findingsCase 5: Interstitial lung disease. Official CXR Read: Cardiac silhouette is partially obscured. Near diffuse interstitial opacities are redemonstrated throughout both lungs, with elements of traction bronchiectasis, presumed honeycombing, and architectural distortion. No definite pneumothorax is identified. Osseous structures appear intact.Emphysema is a lung condition that causes shortness of breath. In people with emphysema, the air sacs in the lungs (alveoli) are damaged. Over time, the inner walls of the air sacs weaken and rupture — creating larger air spaces instead of many small ones. This reduces the surface area of the lungs and, in turn, the amount of oxygen that ...Abstract. Diffuse pulmonary ossification (DPO) is a rare entity which is characterized by metaplastic bone formation in the lung parenchyma. It is an uncommon condition without significant symptoms, which is usually diagnosed on autopsy. Diffuse pulmonary ossification can be easily misdiagnosed as one of interstitial lung diseases due to ...Air and fat have negative numbers, water is close to zero, and structures like soft tissue, blood and bone are higher than zero. The lower the number the darker the tissue. ... The lung is dark because it is mostly air. Darker areas in the lungs may be cysts or areas of air trapping. Hypodense areas in the mediastinum may be masses, lymph …The loss of muscle mass and strength may be one of the direct causes of the loss of bone mass. With less torque being applied on a routine basis because of position, confinement, or weakness, there is a tendency to lose bone. The process of bone growth and loss is normal and continuous in active healthy individuals.Tutorial Introduction. Visible anatomical structures in the chest should be assessed on every chest X-ray. Each of these anatomical structures should be viewed using a systematic approach. There are also important structures that are obscured or become visible only when abnormal. This tutorial describes the important anatomical structures ...HPOA most often causes inflammation of bones and joints in the wrists and ankles. Sometimes this shows up on bone scans or x-rays. Ankles and wrists can become swollen and inflamed, causing much pain and difficulty with movement. One of the most common symptoms of HPOA is a condition known as clubbing. This means: the nails seem to 'float ...Organs and Structures of the Respiratory System | Anatomy. Learning Objectives. By the end of this section, you will be able to: List the structures that make up the respiratory …Osteocyte in lacuna, lamellae, central canal, canaliculi, osteon. What type of cartilage provides support and shock absorption? Fibrocartilage. 10. Thin sheetlike structures which cover all surfaces and line the cavities of the body are known as ____________ . There are three major types found in or on the body.Trachea. The trachea is the long tube that connects your larynx (voice box) to your bronchi. Your bronchi send air to your lungs. Your trachea is a key part of your respiratory system. The trachea is made of rings of cartilage. It's lined with cells that produce mucus.Bone Structures in Avian and Mammalian Lungs. Abstrucr. Ectopic bone was found in the interstitium of lungs of birds, guinea pigs and minks. There was no evidence of a relation between the ectopic bone and the occur- rence of disease. In man ectopic bone has been reported in different organs and tissues such as kidneys, arterial walls, eyes ...Er x-ray. no acute cardiopulmonary abnormality.the cardiomediastinal silhouette is normal in size and configuration.no focal airspace opacification, pleural effusion, or pneumothorax. the osseous structures and soft tissues are unremarkable.normal? A doctor has provided 1 answer. A member asked:Sometimes, bone metastasis causes no signs and symptoms. When it does occur, signs and symptoms of bone metastasis include: Bone pain. Broken bones. Urinary incontinence. Bowel incontinence. Weakness in the legs or arms. High levels of calcium in the blood (hypercalcemia), which can cause nausea, vomiting, constipation and confusion.Bones: Osseous structures refer to bony structures such as the skull, spine and bones of the limbs. I suspect what you are seeing is a typo. It is common for radiology reports to read "osseous structures are unremarkable". Please confirm with the Radiologist that interpreted the exam.The rib cage is a structure of bones that surrounds and protects the thoracic cavity, with 12 ribs protecting each of the two lungs. The vertebral column is posteriorly attached to the ribcage and the lungs. The lungs are cone-shaped—the apex refers to the top of the lung, while the base refers to the bottom of the lung.Metastatic bone cancer, also known as secondary bone cancer, is the term used to describe tumors that originate in other tissues and spread (metastasize) to the bone. The rich arterial supply of the bone makes it a common site of metastatic spread. In fact, the skeleton is the third most common site of disease after lung and liver. Primary bone cancer is an uncommon diagnosis.What is a chest ultrasound? A chest ultrasound is a noninvasive diagnostic exam that produces images, which used to assess the organs and structures within the chest, such as the lungs, mediastinum (area in the chest containing the heart, aorta, trachea, esophagus, thymus, and lymph nodes), and pleural space (space between the lungs and the interior wall of the chest).A typical long bone shows the gross anatomical characteristics of bone. The structure of a long bone allows for the best visualization of all of the parts of a bone (Figure 1). A long bone has two parts: the diaphysis and the epiphysis. The diaphysis is the tubular shaft that runs between the proximal and distal ends of the bone.Meet the lungs! Breathing in through the mouth or nose, air travels down the throat, through the Adam's apple or voice box, and into the lungs. The lungs, which look like an upside-down tree, direct air to tiny sacs called alveoli. Oxygen from the air enters the bloodstream, while waste carbon dioxide exits into the alveoli and is exhaled.The lung on your right side is divided into three lobes: the superior, the middle and the inferior. It's shorter than your left lung, but also wider than your left lung. Both of your lungs are covered with a protective covering called pleural tissue. Left lung. Your left lung has two lobes: the superior and the interior.People retain structured information 40 percent more reliably than random information, writes Matt Abrahams in Inc., who also suggests a structure for your presentations: What? So ...Pulmonary ossification is a rare finding and is characterized by the presence of mature bone in alveolar or interstitial spaces, either localized or disseminated throughout the lung parenchyma. It can be idiopathic ( idiopathic pulmonary ossification) or secondary to chronic lung, cardiac or systemic disorders.Etymology. The word thorax comes from the Greek θώραξ thorax "breastplate, cuirass, corslet" via Latin: thorax.. Human thorax Structure. In humans and other hominids, the thorax is the chest region of the body between the neck and the abdomen, along with its internal organs and other contents. It is mostly protected and supported by the rib cage, spine, and shoulder girdle.Lungs have two main functions: to get oxygen from the air into the body and to remove carbon dioxide from the body. The oxygen helps fuel your body's functions, and carbon dioxide gas is a waste product your body produces when it uses oxygen. Your lungs are filled with millions of air sacs, called alveoli, where these gasses pass between the ...X-ray of the chest (also known as a chest radiograph) is a commonly used imaging study, and is the most frequently performed imaging study in the United States.It is almost always the first imaging study ordered to evaluate for pathologies of the thorax, although further diagnostic imaging, laboratory tests, and additional physical …Overview. The chest wall is comprised of skin, fat, muscles, and the thoracic skeleton. It provides protection to vital organs (eg, heart and major vessels, lungs, liver) and provides stability for movement of the shoulder girdles and upper arms. Although the thoracic skeleton consists of rigid bones and cartilage, its interconnection with the ...A visual comparison of a similar lesion density to osseous structures on mediastinal windows is usually sufficient, however, caution should be exercised in ...6.3 Bone Structure ; 6.4 Bone Formation and Development ; 6.5 Fractures: Bone Repair ; 6.6 ... laryngopharynx that connects the pharynx to the trachea and helps regulate the volume of air that enters and leaves the lungs (Figure 22.7). The structure of the larynx is formed by several pieces of cartilage. Three large cartilage pieces—the ...Bone Metastasis. Bone metastasis is when cancer spreads to your bones from another part of your body. It often affects people with breast, lung and prostate cancer. Bone pain is the most common symptom, but bone fracture also often happens. Bone metastasis typically affects your spine, but can also affect arms and legs.The meaning of OSSEOUS is bony. Recent Examples on the Web The duo created a scheme to bill Medicaid for osseous surgeries, a painful procedure dealing with tooth removal and preparation of the area due to gum disease, that were never performed on patients. — Carrie Napoleon, chicagotribune.com, 26 Aug. 2021 Kruz and Paizlee Davenport became the first siblings to ever be diagnosed with ...Bone, or osseous tissue, is a hardened connective tissue that forms most of the adult skeleton, the support structure of the body.In the areas of the skeleton where bones move (for example, the ribcage and joints), cartilage, a semi-rigid form of connective tissue, provides flexibility and smooth surfaces for movement.The skeletal system is the body system composed of bones and cartilage and ...what do aquatic scientists study. Sint-Truiden multistage random sampling example Search. MenuBone tissue is unique in that its extracellular matrix is mineralized. Calcium phosphate, in the form of hydroxyapatite crystals, is responsible for the mineralization of bone and creates a very strong tissue able to support and protect the body.Blood is a fluid connective tissue that transports gases, nutrients, and wastes throughout the body.Osseous Tissue. Click the card to flip 👆. is a supporting connective tissue which is comprised of: 1. bones. 2. cartilages. 3. ligaments. 4. tendons. (2-4 stabilizes and interconnects bones) Click the card to flip 👆.Multilevel degenerative disc disease is a condition characterized by the degeneration of intervertebral discs, impacting osseous structures and leading to changes in the spine. The degeneration often occurs in the lumbosacral region, resulting in the deterioration of the intervertebral discs. Moderate degenerative disc disease is marked by the ...Cortical bone is a dense and rigid layer of calcium-rich osseous tissue that makes up the outer layer of a bone, explains InnerBody. This compact bone layer is cylindrical in shape...Which structure is highlighted and indicated by the leader line? - left flank (lumbar) region - right inguinal (iliac) region - pubic (hypogastric) ... Which structure is highlighted and indicated by the leader line? - diaphragm - trachea - bronchi - lungs - esophagus. integumentary system.The mediastinum is a complex anatomic space within the central thoracic cavity, surrounded by the lungs. It extends from the thoracic inlet superiorly to the diaphragm inferiorly. The mediastinum contains multiple vital organs and anatomical structures. A good understanding of anatomy helps in narrowing the differential while evaluating mediastinal masses, which in turn helps in recommending ...Pulmonary fibrosis is a lung disease that occurs when lung tissue becomes damaged and scarred. This thickened, stiff tissue makes it harder for the lungs to work properly. Pulmonary fibrosis worsens over time. Some people can stay stable for a long time, but the condition gets worse faster in others.AnswerBot. ∙ 1mo ago. If osseous structures are unremarkable, it means that there are no significant abnormalities, deformities, or lesions detected in the bones. This term is often used in ...Lungs are the main organs of the respiratory system. Lungs are paired viscera located in the thoracic cavity and are composed of spongy tissue. The primary function of the lungs is to oxygenate blood and eliminate CO 2. To perform this function, the lungs need to be able to capture as much O 2 as possible, a task that is easily achieved owing ...Chest X-rays produce images of your heart, lungs, blood vessels, airways, and the bones of your chest and spine. Chest X-rays can also reveal fluid in or around your lungs or air surrounding a lung.Soft-tissue tumors are defined as mesenchymal proliferations that occur in extraskeletal nonepithelial tissues of the body, excluding the viscera, meninges, and lymphoreticular system [1, 2].CT has long been used to characterize the composition and anatomic location of soft-tissue masses [3-5] and has been known for several decades to be able to …Apr 27, 2022 · Sometimes, bone metastasis causes no signs and symptoms. When it does occur, signs and symptoms of bone metastasis include: Bone pain. Broken bones. Urinary incontinence. Bowel incontinence. Weakness in the legs or arms. High levels of calcium in the blood (hypercalcemia), which can cause nausea, vomiting, constipation and confusion. Human skeleton. The human skeleton is the internal framework of the human body. It is composed of around 270 bones at birth - this total decreases to around 206 bones by adulthood after some bones get fused together. [1] The bone mass in the skeleton makes up about 14% of the total body weight (ca. 10-11 kg for an average person) and ...The sternum, or breastbone, is a flat bone at the front center of the chest. The ribs and sternum make up what is called the ‘ribcage.’. The ribcage protects the lungs, blood vessels, and ...The lung is dark because it is mostly air. Darker areas in the lungs may be cysts or areas of air trapping. Hypodense areas in the mediastinum may be masses, lymph nodes, or cysts. Hypodense blood vessels may be occlusions or clots after contrast is given through a vein. Hypodense areas along the chest wall and ribs may be bone lesions.The outer surface of the bone is covered with a fibrous membrane called the periosteum (peri – = “around” or “surrounding”). The periosteum contains blood vessels, nerves, and lymphatic vessels that nourish compact bone. Tendons and ligaments also attach to bones at the periosteum.Chest X-rays produce images of your heart, lungs, blood vessels, airways, and the bones of your chest and spine. Chest X-rays can also reveal fluid in or around your lungs or air surrounding a lung.Dec 23, 2021 · Abstract. Diffuse pulmonary ossification (DPO) is a rare condition of DLD (diffuse lung disease) characterized by the presence of metaplastic ectopic bone in the lungs and is less frequent in patients without a clear background of lung diseases. DPO is characterized by very small calcific nodules, often with bone mature located in both lungs ... Abstract. Diffuse pulmonary ossification (DPO) is a rare entity which is characterized by metaplastic bone formation in the lung parenchyma. It is an uncommon condition without significant symptoms, which is usually diagnosed on autopsy. Diffuse pulmonary ossification can be easily misdiagnosed as one of interstitial lung diseases due to ...What is chronic osseous in my lungs mean. A member asked: ... the lungs and pleural spaces are clear. the cardiac silhouette is normal. the regional osseous structures are normal. impression: no active cardiopulmonary process? 2 doctors weighed in across 2 answers. A member asked:Lung cancer with bone metastases refers to the spread of cancer from the primary (original) tumor to the bone. The spread of cancer cells occurs either through the bloodstream or lymphatic system (a system of fluids, vessels, and organs that protect the body against foreign invaders). Bone metastases from lung cancer affect between 30% and 40% ...Structure and Function. The nasal cavity is the most cephalic part of the respiratory tract. It communicates with the external environment via the anterior apertures, nares, and the nasopharynx via the posterior apertures, choanae. This cavity is divided into two separate cavities by the septum and kept patent by a bone and cartilaginous framework.The basic structure of a bone consists of a thin, superficial layer of compact bone overlying the bone marrow cavity composed of spongy bone. Since bone is a living tissue, it requires a neurovasculature supply. Arterial blood is provided by the nutrient, periosteal, metaphyseal, and epiphyseal arteries.The pleura help your lungs expand and contract with each breath and contain pleural fluid that lubricates this movement. The inner edge of the hilum acts as a channel where a number of structures ...The sternum is the elongated bony structure that anchors the anterior thoracic cage. It consists of three parts: the manubrium, body, and xiphoid process. The manubrium is the wider, superior portion of the sternum. The top of the manubrium has a shallow, U-shaped border called the jugular (suprasternal) notch. This can be easily felt at the ...By the time people are born, erythropoiesis takes place in people's bone marrow. Bone marrow is the spongy tissue inside of your bones. Fetal erythropoiesis. The location of erythropoiesis changes as a fetus develops during pregnancy. Week three: Erythropoiesis begins in the yolk sac. A yolk sac is a structure that nourishes a developing embryo.See full list on verywellhealth.com Extracellular matrix: Fibroblasts produce collagen and other proteins that make up the ECM. This is the network of fibers that support tissues in the body, such as the skin, organs, and blood vessels. Tendons and bones: The collagen protein produced by fibroblast cells is a critical component of cartilage (found in joints and between bones), tendons, and bone.The lungs (plural in Latin: pulmones, singular: pulmo) are the main respiratory organs located in the thorax. There are two lungs in the human body - right and left. They are expandable organs with a spongy structure that occupy most of the thoracic cavity and are situated on both sides of the mediastinum. The lungs are the central organs of ...Structure of atypical ribs. First - widest, shortest, it has the sharpest curve and only one articular surface, contains two grooves for the subclavian vessels. Second - it has two facets and a roughened tuberosity on its posterior surface. Tenth, eleventh, twelfth - they have only one facet and neither a neck or tubercles.The statement “soft tissues are unremarkable” in medical imaging reports denotes the absence of noticeable issues within these body structures. It serves as a reassuring indication, allowing doctors to focus on other conditions. Keep in mind that while this assessment is a valuable aspect of imaging reports, it’s always important to ...Simple pulmonary eosinophilia is inflammation of the lungs from an increase in eosinophils, a type of white blood cell. Pulmonary means related to the lungs. Simple pulmonary eosin...Abstract. The concept that the small airway is a primary pathological site for all COPD phenotypes has been challenged by recent findings that the disease starts from the central airways in COPD subgroups and that a smaller central airway tree increases COPD risk. This study aimed to examine whether the computed tomography (CT)-based airway ...Spinal osseous neoplasms are frequently encountered and can be challenging when present as solitary lesions. Familiarity with the range of benign and malignant spinal pathology can help the radiologist formulate a comprehensive differential diagnosis. This article focuses on the spectrum of extradural spinal tumors, accounting for the majority of primary spinal tumors, by comparing the ...An overview of symptoms, causes, diagnosis, and treatment for blood clots, deep vein thrombosis, and pulmonary embolisms. Trusted Health Information from the National Institutes of...The skeletal system's main function is to provide support for the body. For example, the spinal column provides support for the head and torso. The legs, on the other hand, support and bear the ...Pulmonary ossification refers to bone tissue formation (calcification in a collagen matrix), with or without marrow elements, in the lung parenchyma. While other organs can be affected by ectopic calcification and ossification, the lungs are particularly susceptible [ 1 ].

Lung, Epithelium - Degeneration should be diagnosed and graded whenever present. A site modifier should be included in the diagnosis to indicate the location of the lesion within the lung (e.g., alveolus, bronchiole) since toxic insults can preferentially target specific sites.. Minneapolis star tribune obituaries sunday

what is osseous structures in lungs

The opacity of the right upper lobe has a homogeneous internal structure. The minor fissure and the hilum are displaced superiorly, which points to a volume loss. The upper lobe bronchus is obstructed and a postobstructive atelectasis has developed. The air in the alveoli and the bronchi has been absorbed. Pneumonia.The lungs are pyramid-shaped, paired organs that are connected to the trachea by the right and left bronchi; on the inferior surface, the lungs are bordered by the diaphragm. The …softening of the nail beds. nails having an appearance of floating instead of being firmly attached to your fingers or toes. redness and warmth in the nails and nail beds. the skin at the base of ...Primary tumors that commonly metastasize to bone include 7: prostate cancer (most common in males) breast cancer (most common in females) non-small cell lung cancer. hepatocellular carcinoma. renal cell carcinoma. thyroid cancer. Lung cancer , breast cancer , renal cell carcinoma , and prostate cancer account for ~80% of all bone …Summary. Lytic lesions describe areas of bone damage that typically occur due to rapidly dividing cells in the bone. Multiple myeloma is a cancer of the plasma cells and a common cause of lytic ...Figure 1. The major respiratory structures span the nasal cavity to the diaphragm. Functionally, the respiratory system can be divided into a conducting zone and a respiratory zone. The conducting zone of the respiratory system includes the organs and structures not directly involved in gas exchange. The gas exchange occurs in the respiratory zone.A bone is a somatic structure that is composed of calcified connective tissue. Ground substance and collagen fibers create a matrix that contains osteocytes.These cells are the most common cell found in mature bone and responsible for maintaining bone growth and density. Within the bone matrix both calcium and phosphate are abundantly stored, strengthening and densifying the structure.Alveoli are tiny air sacs in your lungs that take up the oxygen you breathe in and keep your body going. Although they're microscopic, alveoli are the workhorses of your respiratory system ...The lung on your right side is divided into three lobes: the superior, the middle and the inferior. It's shorter than your left lung, but also wider than your left lung. Both of your lungs are covered with a protective covering called pleural tissue. Left lung. Your left lung has two lobes: the superior and the interior.Osseous tissue or bone is a supportive connective tissue. It consists of approximately one-third organic content, including collagen fibers and ground substance, and two-thirds inorganic content, including various calcium phosphate salts, but it also contains various living “breathing” cells that need a continuous blood supply.Structure. The carina is a cartilaginous ridge separating the left and right main bronchi that is formed by the inferior-ward and posterior-ward prolongation of the inferior-most tracheal cartilage.. The carina occurs at the lower end of the trachea - usually at the level of the 4th to 5th thoracic vertebra. This is in line with the sternal angle, but the carina may raise or descend up to two ...This structure gives the skeletal muscle tissue four main physiological properties: ... Spongy (cancellous) bone is the deep airy layer of the bone. Unlike the compact bone, spongy bone is highly vascularized and more metabolically active. ... most importantly the brain, which is surrounded by the skull, as well as the heart and lungs, which ...Trachea. The trachea is the long tube that connects your larynx (voice box) to your bronchi. Your bronchi send air to your lungs. Your trachea is a key part of your respiratory system. The trachea is made of rings of cartilage. It's lined with cells that produce mucus.What is osseous structures in lungs? Introduction: Pulmonary ossification (PO) is a rare pathologic finding, defined as a widespread heterotopic bone formation within the lungs. PO occurs in two forms. The first form is the nodular circumscribed type; the second form is the racemose or branching type. Males are more often affected than females.The costal surface of the lung borders the ribs. The mediastinal surface faces the midline. Figure 22.2.1 Gross Anatomy of the Lungs. Each lung is composed of smaller units called lobes. Fissures separate these lobes from each other. The right lung consists of three lobes: the superior, middle, and inferior lobes..

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