Liver glycogen into glucose that enters blood; blood glucose

Concentration rises to normal level

GHIG - Produced in the hypothalamus; decreases the rate of

glycogen breakdown in the liver and glucose enters the blood more slowly; blood glucose level falls to normal

TRH - Produced in the hypothalamus; carried to the anterior pituitary where it stimulates secretion of TSH; TSH is then released into blood where it stimulates thyroid follicular cells

GnRH - Produced in the hypothalamus; GnRH then promotes the release of LH; LH brings about rupture of the dominant follicle and expulsion of a secondary oocyte

PRH - Produced in the hypothalamus; stimulates a rise in prolactin level during pregnancy; mammary glands

PIH - Produced in the hypothalamus; suppresses release of prolactin; mammary glands

CRH - Produced in the placenta; controls the clock that establishes the timing of birth; is important in fetal lung development and production of surfactant which is a substance that helps to prevent collapse of the alveoli of the lungs

hGH - Produced in the anterior pituitary; stimulates bone, liver, and other tissues

Insulin - Produced in the pancreas; when blood glucose level is below normal insulin decreases it by acting in several ways. It accelerates facilitated diffusion of glucose into cells, accelerates conversion of glucose into glycogen and fatty acids, increases protein synthesis, slows conversion of glycogen to glucose, and slows formation of glucose from other substances such as amino acids.

T4 - (Tetraiodothyronine) Produced by the thyroid gland; tetraiodothyronine (Thyroxine), this hormone regulates organic metabolism, growth and development and the activity of the nervous system

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