Multiple Choice
One type of electrical defect in the heart is a delay in the electrical signal from the sinoatrial node to the relay point. Predict the effect of this defect on the cardiac cycle.
A) The atria relax for a shorter period of time.
B) The atria relax for a longer period of time.
C) The ventricles relax for a shorter period of time.
D) The ventricles relax for a longer period of time.
Correct Answer:
Verified
Correct Answer:
Verified
Q42: When you hold your breath, which changes
Q43: Which blood vessels have thin, leaky walls?<br>A)capillaries<br>B)venules<br>C)arteries<br>D)veins
Q44: Which is a characteristic of open circulatory
Q45: Veins carry _.<br>A)blood away from the heart<br>B)oxygen-rich
Q46: <b>Scenario</b><br>Yawning is a reflexive action that is
Q48: <b>Scenario</b><br>In sickle cell disease (SCD), a mutation
Q49: Examine the structure of blood vessels in
Q50: Animals such as hydras and jellies can
Q51: <b>Scenario</b><br>Blood flowing away from the heart is
Q52: Why do cigarette smokers cough more than