The most important factor in decreasing the intracellular concentration of calcium ion after contraction is
A) active transport of calcium across the sarcolemma.
B) active transport of calcium into the sarcoplasmic reticulum.
C) active transport of calcium into the synaptic cleft.
D) diffusion of calcium out of the cell.
E) diffusion of calcium into the sarcoplasmic reticulum.
B) active transport of calcium into the sarcoplasmic reticulum.
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Which is a function of LH?
A. It inhibits GnRH secretion by the hypothalamus during ovulation. B. It stimulates production of inhibin by theca cells. C. It stimulates androgen production by theca cells. D. It stimulates the growth of granulosa cells. E. It stimulates estrogen production by theca cells.
Responds to environmental changes by transmitting electrical impulses.
A) Skeletal B) Nervous C) Integumentary D) Muscular
A type of muscle that extends a joint is known as a(n)
A) flexor B) extensor C) rotator D) supinator
How many codons are present in the following strand of mRNA? U A C G G U A G U A U G
A) 12 B) 6 C) 3 D) 4