Multiple Choice
When not filled with blood the anterior portion of each atrium deflates and becomes a rather lumpy and wrinkled flap called the________.
A) atrial sinus
B) coronary sulcus
C) atrial apex
D) interatrial groove
E) auricle
Correct Answer:

Verified
Correct Answer:
Verified
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Q114: Figure 21.4<br> <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB4856/.jpg" alt="Figure 21.4
Q115: Figure 21.5<br> <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB4856/.jpg" alt="Figure 21.5
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Q120: Figure 21.2<br> <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB4856/.jpg" alt="Figure 21.2
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