The vessel that supplies blood to the muscles of the upper arm, before branching to create vessels that supply the forearm, is the ________ artery.

A) radial
B) axillary
C) brachial
D) ulnar
E) median antebrachial


C) brachial

Anatomy & Physiology

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Analysis of a single DNA strand yielded this information on amounts of some nucleotides: 43 units of cytosine and 51 units of adenine. What amounts would you expect of guanine and thymine in that strand? What amounts would you expect of all bases in the complementary strand?

What will be an ideal response?

Anatomy & Physiology

Chyme is created in the ________

A) mouth B) stomach C) small intestine D) esophagus

Anatomy & Physiology

What is the purpose of the signal delay at the AV node during excitation of the heart?

A. Allows for greater excitation of the ventricles B. Spreads the action potential across a greater surface area C. Allow for total ventricular filling D. Increases the end-systolic volume

Anatomy & Physiology

Muscle length has a more pronounced effect on contraction strength in cardiac muscle than in skeletal muscle. This is because cardiac muscle has a greater sensitivity to ________.

A. depolarization B. calcium C. lactic acid D. parasympathetic antagonists

Anatomy & Physiology