Identify the structure identified by the X in the picture below.
Fill in the blank
The Correct Answer is {"dropdown-group-1":"C"}
Correct answer: Interventricular septum (IV septum)
The labeled structure is the interventricular septum, the muscular wall separating the left and right ventricles.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["B","C"]
Explanation
A. They are thicker than arteries: veins generally have thinner walls (especially a thinner tunica media) than arteries because they carry blood at lower pressure.
B. Their tunica media is less developed than in arteries: veins have a thinner tunica media (less smooth muscle and elastic tissue) compared with arteries.
C. They often have one-way valves: many veins (especially in the limbs) have valves to prevent backflow and assist venous return against gravity.
D. They carry blood under very high pressure: veins return blood under low pressure; arteries carry blood under much higher pressure.
Correct Answer is C
Explanation
A. Pepsin or trypsin and peptidases: these are protein digesting enzymes, not primary fat digesters.
B. Amylase and disaccharidases: these digest carbohydrates, not fats.
C. Lipase: lipase (plus bile for emulsification) is required to chemically digest fats into fatty acids and glycerol.
D. Amylase and pepsin: amylase digests starch and pepsin digests proteins; neither is the principal fat-digesting enzyme.
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