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Questions and Answers
Which structure separates the thoracic cavity from the abdominal cavity?
Which structure separates the thoracic cavity from the abdominal cavity?
- Intercostal muscles
- Pleura
- Diaphragm (correct)
- Mediastinum
Which type of ribs are attached to the sternum by their costal cartilages?
Which type of ribs are attached to the sternum by their costal cartilages?
- Floating ribs
- True ribs (correct)
- Sternal ribs
- False ribs
Which muscle is primarily responsible for quiet breathing at rest?
Which muscle is primarily responsible for quiet breathing at rest?
- External intercostal muscles
- Transversus thoracis
- Internal intercostal muscles
- Diaphragm (correct)
Which layer covers the surface of the lungs and lines the walls of the thoracic cavity?
Which layer covers the surface of the lungs and lines the walls of the thoracic cavity?
What is the structural alteration and implication of a pneumothorax?
What is the structural alteration and implication of a pneumothorax?
Which structure divides the thoracic cavity into three compartments: superior, anterior, and posterior?
Which structure divides the thoracic cavity into three compartments: superior, anterior, and posterior?
Which rib type is not attached to the sternum at all?
Which rib type is not attached to the sternum at all?
Which blood vessels supply oxygenated blood to the lungs for oxygen exchange?
Which blood vessels supply oxygenated blood to the lungs for oxygen exchange?
Which muscles are active during forced inspiration?
Which muscles are active during forced inspiration?
What type of muscle activity do the intercostal muscles primarily exhibit?
What type of muscle activity do the intercostal muscles primarily exhibit?
Which muscles facilitate active expiration by depressing the ribs?
Which muscles facilitate active expiration by depressing the ribs?
Which lung surface is related to the space between the lungs known as the mediastinum?
Which lung surface is related to the space between the lungs known as the mediastinum?
What is the mnemonic for the location of the pulmonary artery in relation to the primary bronchus?
What is the mnemonic for the location of the pulmonary artery in relation to the primary bronchus?
Which vessels provide a dual blood supply to the lung tissue?
Which vessels provide a dual blood supply to the lung tissue?
Where do lymphatics arise in the vicinity of the lungs?
Where do lymphatics arise in the vicinity of the lungs?
How many lobes does the right lung have?
How many lobes does the right lung have?
Which part of the respiratory system has no alveoli and transmits bulk flow?
Which part of the respiratory system has no alveoli and transmits bulk flow?
In which type of ribs do the 11th and 12th ribs have no sternal connection and end in the posterior abdominal musculature?
In which type of ribs do the 11th and 12th ribs have no sternal connection and end in the posterior abdominal musculature?
What is the functional characteristic of the thoracic skeleton that allows movement for ventilation?
What is the functional characteristic of the thoracic skeleton that allows movement for ventilation?
Which part of the sternum begins as hyaline cartilage and ossifies into bone after the age of 40?
Which part of the sternum begins as hyaline cartilage and ossifies into bone after the age of 40?
What landmark correlates with T4-T5 vertebrae, the carina of the trachea, and serves as the border between the superior and inferior mediastina?
What landmark correlates with T4-T5 vertebrae, the carina of the trachea, and serves as the border between the superior and inferior mediastina?
Which part of the rib consists of a small elevation on a bone and houses veins, arteries, and nerves in its costal groove?
Which part of the rib consists of a small elevation on a bone and houses veins, arteries, and nerves in its costal groove?
In which direction do adult ribs course from their thoracic vertebral articulation to their anterior sternal articulation?
In which direction do adult ribs course from their thoracic vertebral articulation to their anterior sternal articulation?
Which part of the respiratory system participates in gas exchange (diffusion) and has alveoli?
Which part of the respiratory system participates in gas exchange (diffusion) and has alveoli?
What is the function of the thin layer of pleural fluid?
What is the function of the thin layer of pleural fluid?
Which nerve fibers supply the central portion of the diaphragmatic parietal pleura and the mediastinal parietal pleura?
Which nerve fibers supply the central portion of the diaphragmatic parietal pleura and the mediastinal parietal pleura?
Which blood vessels supply the visceral pleura and drain into the pulmonary veins?
Which blood vessels supply the visceral pleura and drain into the pulmonary veins?
What can disrupt the coupling of the parietal and visceral pleura and cause pulmonary collapse?
What can disrupt the coupling of the parietal and visceral pleura and cause pulmonary collapse?
Where is the superior border of the mediastinum located?
Where is the superior border of the mediastinum located?
Which structures are contained in the superior mediastinum?
Which structures are contained in the superior mediastinum?
Which muscle is the primary muscle of inspiration?
Which muscle is the primary muscle of inspiration?
In which subdivision of the inferior mediastinum would you find part of the thymus or its remnant?
In which subdivision of the inferior mediastinum would you find part of the thymus or its remnant?
What is the venous return facilitated by the alternating contraction and relaxation of the diaphragm?
What is the venous return facilitated by the alternating contraction and relaxation of the diaphragm?
What structures are contained in the posterior mediastinum?
What structures are contained in the posterior mediastinum?
What happens under abnormal conditions in an Ipsilateral diaphragm paralysis?
What happens under abnormal conditions in an Ipsilateral diaphragm paralysis?
What characterizes the Aortic foramen retrodiaphragmatic opening?
What characterizes the Aortic foramen retrodiaphragmatic opening?
What is the source of the muscle fibers for the costal part of the diaphragm?
What is the source of the muscle fibers for the costal part of the diaphragm?
In which condition does a congenital defect occur when connective tissues of hemi-diaphragms do not fuse properly?
In which condition does a congenital defect occur when connective tissues of hemi-diaphragms do not fuse properly?
What nerves provide motor (efferent) and sensory (afferent) innervation to the diaphragm?
What nerves provide motor (efferent) and sensory (afferent) innervation to the diaphragm?
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