The pelvic diaphragm is formed by the
A. levator ani only.
B. deep transverse perineum muscle.
C. levator ani and coccygeus muscles.
D. sphincter urethrae and sphincter ani muscles.
E. coccygeus only.
C
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Extrinsic control of arteriolar radius is
a. accomplished primarily by the sympathetic nervous system b. important in the regulation of arterial blood pressure c. sometimes overridden by local adjustments d. all of the above e. only a and b
What might account for a soldier experiencing syncope after standing at attention for a long period of time?
A. Venous pooling B. Increased respiratory rate C. Increased heart rate D. Vasoconstriction
Hydrogen bonds can break in high temperature conditions. Which of the following molecules is likely to break apart or change shape at high temperatures?A) DNAB) RNAC) TriglyceridesD) ProteinsE) Polysaccharides
What will be an ideal response?
What occurs when gamma motor neurons to a muscle are activated?
A. The muscle lengthens. B. The muscle spindle goes slack. C. Action potential firing increases in afferent neurons from the muscle spindles. D. The contractile ends of intrafusal fibers elongate. E. Extrafusal muscle fibers within that muscle are inhibited from contracting.