Cortisol is secreted by the adrenal cortex in response to stress. In addition to its function in a stress response, it functions in negative feedback by
a. inhibiting the hypothalamus so that corticotropin releasing hormone (CRH) secretion is reduced.
b. reduces the secretion of ACTH by the anterior pituitary.
c. suppressing its own secretion by its actions on the hypothalamus and anterior pituitary.
d. all of these.
d. none of these.
D
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Cardiac muscle, smooth muscle, and glands are under the control of the
A) somatic nervous system. B) parasympathetic division. C) autonomic nervous system. D) central nervous system. E) sympathetic division.
The period of interphase when DNA is replicated is the
A. mitosis phase. B. G2 phase. C. S phase. D. G1 phase.
The sternocleidomastoid muscle extends from the mastoid process of the temporal bone to the sternum and medial clavicle. When both sternocleidomastoid muscles contract, the head is flexed. The end of the muscle that connects to the sternum is the ________.
A. fixator B. insertion C. body D. origin E. belly
Most of the following hormones bind to receptors at the cell surface except ____ that binds to receptors in the nucleus.
a. luteinizing hormone b. testosterone c. growth hormone d. insulin e. angiotensin