Choose the statement that is most correct about orbits.

A) The orbits are formed of both facial and cranial bones.
B) The orbits contain only facial bones.
C) The orbits contain only cranial bones.
D) The orbits are made entirely of cartilage.


A) The orbits are formed of both facial and cranial bones.

Anatomy & Physiology

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Na+/K+—ATPase is considered to be an electrogenic pump because

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What is the pacemaker that sets the rate of the heartbeat?

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