Question Detail

ZOO 101 ZOO 101 Past Questions Objective Question
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Question

What would most likely happen if the atrioventricular (AV) valves fail to close properly?
Options
A Blood would regurgitate into the atria during ventricular contraction
Correct Answer
B Blood pressure would drop to zero
C The heart would stop beating
D Pulmonary circulation would increase
Correct Answer

Option A is the correct answer.

Detailed Explanation

Incompetent AV valves allow backflow of blood from ventricles to atria during systole, producing a heart murmur and reducing cardiac efficiency.

Hint

This causes the 'lub' sound to be followed by a swooshing noise.

Question Info

Course: ZOO 101
Topic: ZOO 101 Past Questions
Type: Objective
Difficulty: Not specified
Question 70 of 2214
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