What vessel drains the blood from the face and scalp?
External jugular vein
Superior vena cava
Subclavian vein
Cephalic vein
The Correct Answer is A
A. External jugular vein: the external jugular drains superficial structures of the head and neck (including much of the face and scalp) and empties into the subclavian vein.
B. Superior vena cava: Incorrect (in the direct sense) -the superior vena cava is the large trunk that returns venous blood to the right atrium, but it does not directly drain the face/scalp; it receives blood ultimately via the brachiocephalic veins.
C. Subclavian vein: Partially related but not the primary answer -the subclavian receives blood from the external jugular, but it primarily drains the upper limb; it is a larger trunk rather than the direct superficial drain of face/scalp.
D. Cephalic vein: the cephalic vein is a superficial vein of the lateral upper limb (arm/forearm), not a drain of the head or face.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Right atrium: Receives systemic venous blood (SVC/IVC), thin-walled chamber on the heart’s right side -not the thick, muscular chamber shown if the figure indicates the left ventricle.
B. Right ventricle: Pumps blood to the pulmonary trunk; its wall is thicker than an atrium but thinner than the left ventricle and sits more anteriorly -not the most muscular chamber.
C. Left atrium: Receives oxygenated blood from the pulmonary veins and sits posteriorly; it has thinner walls than the left ventricle.
D. Left ventricle: The left ventricle has the thickest muscular wall (high systemic pressure), forms the cardiac apex, and pumps blood into the aorta
Correct Answer is {"dropdown-group-1":"B"}
Explanation
Correct answer: Esophagus
The esophagus is the muscular alimentary tube that runs posterior to the trachea from the pharynx to the stomach; a tube positioned behind the heart/sternum on the model marked X corresponds to the esophagus.
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