Question

multiple choice question
what is the earlike extension of each atrium called?

sulcus

ventricle

aorta

auricle

Explanation:

To solve this, we analyze each option:

• Sulcus: A groove, not related to atrium extensions.
• Ventricle: A lower heart chamber, not an atrium extension.
• Aorta: A major artery, not an atrium extension.
• Auricle: The ear - like extension of each atrium.

Answer:

D. Auricle