The combining form atri/o- means "atrium ________. ________."

A) artery
B) heart chamber
C) entrance to the heart
D) chamber that is open at the top


D
Explanation: A) Arter/o- and arteri/o- mean "artery."
B) There are no medical word parts that mean "heart chamber."
C) There are no medical words that mean "entrance to the heart."
D) Correct!

Health & Biomechanics

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