Narrowing of a blood vessel is termed:
A) angioplasty
B) venopathy
C) arthrosclerosis
D) vasodilation
E) vasoconstriction
E
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It is because of adaptive ________ that people normally get chicken pox only once
A) WBCs B) Antigens C) Immunity D) Antibodies
Voluntary motor impulses leave the spinal cord via the ________ of gray matter
A) anterior column B) anterior horn C) posterior column D) posterior horn E) lateral horn
A condition in which the heart is contracting in an uncontrolled, rapid, and irregular manner
a. is heart block b. is fibrillation c. can be treated with administration of an electrical current d. is none of the above e. is both b and c
Which of the following pairs concerning action potentials in cardiac muscle is mismatched?
A. Opening of Na+ channels - depolarization B. Closure of Na+ channels - early repolarization C. Closing of Ca2+ channels - plateau phase D. Opening of Ca2+ channels - plateau phase E. Opening of K+ channels - rapid repolarization