Parathyroid hormone
A) raises the level of calcium ion in the blood.
B) decreases the rate of calcium excretion.
C) increases the rate of calcium absorption.
D) stimulates osteoclast activity.
E) All of these answers are correct.
E) All of these answers are correct.
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The term transport maximum, Tm, refers to
a. the maximum amount of a substance that the tubular cells can transport within a given period. b. the maximum amount of a substance that flows through the peritubular capillary within a given period. c. the maximum rate of diffusion of sodium through the glomerular membrane. d. the maximum amount of filtrate that can be produced in the presence of aquaporins.
During pregnancy, increased uterine blood flow and increased protein synthesis by the liver are stimulated by
A. progesterone. B. estrogen. C. peptide hormones.
Flexion injuries to the spine would MOST likely result from:
A) rapid acceleration forces. B) rapid deceleration forces. C) a rear-end motor vehicle crash. D) a direct blow to the frontal lobe
The reason a human may be paler when exposed to cold temperatures is
A. purely psychological. B. dehydration of the stratum corneum. C. constriction of the dermal collagen and elastic fibers. D. vasodilation has occurred. E. vasoconstriction has occurred.