Quiz
Module 3
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Questions in this quiz (9)
1Which is correct concerning the mediastinum?
- AThe trachea is only found in the inferior mediastinum.
- BThere are two brachiocephalic arteries but only one brachiocephalic vein.
- CThe left recurrent laryngeal nerve courses through the superior mediastinum, the right recurrent laryngeal nerve does not.
- DThe phrenic nerves course through the superior and posterior divisions of the mediastinum to reach the diaphragm.
- EParts of the aorta are found in the middle and posterior, but not in the superior subdivision of the mediastinum.
2Which is correct concerning the mediastinum?
- AThe narrow points of the esophagus are its origin from the pharynx in the neck and at the esophageal hiatus of the diaphragm.
- BThe arch of the aorta and the azygous vein arch over the right and the left main bronchus, respectively.
- CThe esophagus may be compressed by the right main bronchus.
- DThe vagus nerves innervate the smooth muscle of the esophagus and not the skeletal muscle of the esophagus.
- EThe esophagus may be compressed by the ascending aorta.
3Which is correct concerning the mediastinum?
- AThe esophagus courses through the superior and the middle mediastinum.
- BThe thymus or its remnants are found between the right brachiocephalic vein and the trachea.
- CThe heart chambers are found in the inferior mediastinum.
- DThere are three branches of the arch of the aorta, one on the right and two on the left.
- EThe trachea is posterior to the esophagus.
4Which is correct concerning the mediastinum?
- AThe thoracic duct courses through the posterior and superior mediastinum to drain into the origin of the right brachiocephalic vein.
- BThe thoracic duct drains all lymph from above the diaphragm.
- CThe azygous vein receives posterior intercostal veins from the left side of the thorax, and one or two hemiazygous veins from the right.
- DLymph from structures on the right side of the body above the diaphragm drain into the right lymphatic duct.
- EThe pulmonary veins course in the superior and middle mediastinum.
5Which is correct concerning the mediastinum?
- AThe right superior intercostal vein drains into the hemiazygous vein.
- BThe accessory hemiazygous vein drains intercostal spaces 9-12; the hemiazygous vein drains intercostal spaces 5-8.
- CThe phrenic nerves course posterior to the roots of the lung.
- DAnterior intercostal veins drain into a pair of internal thoracic veins.
- EThe vagus nerves course through the mediastinum anterior to the root of each lung.
6Which is correct concerning the diaphragm?
- AA single phrenic nerve innervates the diaphragm.
- BDuring active inspiration, abdominal muscles push up the diaphragm.
- CThe diaphragm descends when it contracts and elevates the lower ribs.
- DThe diaphragm consists of smooth muscle.
- EThe diaphragm is a secondary muscle of inspiration.
7Which is correct concerning the diaphragm and its innervation?
- AWhen the diaphragm contracts, the superior to inferior dimension of the thorax is decreased.
- BThe phrenic nerves that innervate the diaphragm consist of ventral rami from the C4, C5 and C6 spinal cord segments.
- CThe phrenic nerves and intercostal nerves provide the sensory innervation of the diaphragm.
- DIf a phrenic nerve is lesioned, the affected side of the diaphragm will descend during inspiration.
- EThe phrenic nerves contain only motor fibers.
8Which is correct about muscles of respiration?
- AThe external intercostal muscles are deep to the internal intercostal muscles.
- BThe ribs are immobile where they attach to the thoracic vertebrae.
- CThe internal intercostal muscle fibers are perpendicular to the innermost intercostal muscle fibers.
- DThere are two overlapping layers of intercostal muscles.
- EThe main mechanism of quiet expiration is elastic recoil of the rib cage.
9Which is correct about muscles of respiration?
- AThe anterior parts of the ribs elevate in a bucket handle fashion.
- BDuring active expiration, anterior abdominal muscles push down the diaphragm.
- CActive expiration utilizes the internal intercostal muscles to elevate the ribs.
- DThe sternum moves in a pump handle fashion to increase the transverse dimension of the thorax.
- EThe external and anterior fibers of internal intercostal muscles elevate the ribs and sternum for inspiration.
Information
- Description
- Quiz on Module 3, created by Eric Suchanec on 04/08/2022.
- Author
- Eric Suchanec
- Language
- English
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