An antigen-presenting cell (APC) is a
A. red blood cell.
B. basophil or helper T cell.
C. memory cell.
D. macrophage or B cell.
Answer: D
Anatomy & Physiology
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The most prevalent of skeletal muscle fibers in the body are _____ fibers
A. slow-twitch B. fast-twitch C. intermediate
Anatomy & Physiology
The collar bone is the
A. sternum. B. clavicle. C. scapula. D. humerus. E. atlas.
Anatomy & Physiology
The tricuspid valve is closed ________.
A) while the ventricle is in diastole B) when the ventricle is in systole C) while the atrium is contracting D) by the movement of blood from atrium to ventricle
Anatomy & Physiology
CATs and MRIs are used to check for the presence of tumors or the alteration in organ size.
a. true b. false
Anatomy & Physiology