In arteries, the thickest layer of the wall is the
A. tunica externa.
B. tunica intima.
C. tunica media.
D. tunica adventitia.
E. None of these answers is correct.
Answer: C
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Functions of astrocytes include all of the following except
A) maintaining the blood-brain barrier. B) conducting action potentials. C) guiding neuron development. D) responding to neural tissue damage. E) forming a three-dimensional framework for the CNS.
The __________ body is a jelly-like substance that fills the space posterior to the lens and helps to maintain the shape of the eyeball.
Fill in the blank(s) with the appropriate word(s).
What features are common to forearm movement at an elbow joint and the opening of a cell membrane passageway?
What will be an ideal response?
Rupture of the papillary muscles in the left ventricle may result in any of the following except
A) mitral regurgitation. B) mitral valve prolapse. C) bicuspid regurgitation. D) bicuspid prolapse. E) pulmonary valve stenosis.