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Glandular secretory cells that release their secretions into the extracellular fluid
Chemical messengers that are released in one tissue and transported by the bloodstream to reach target cells
A sensor in the cell membrane, or in the cytoplasm that allows the cell to respond to the presence of a hormone
The substance in the cytoplasm that responds to the activation of a receptor in the membrane
One of the most important second messengers. Its appearance depends on the presence of Adenylate Cyclase.
Special hormones that control the activity of endocrine cells in the anterior pituitary.
This gland secretes nine different hormones, all hormones use cAMP as a second messenger.
Anterior Pituitary Gland
This gland contains endocrine cells surrounded by an extensive capillary network called the hypophyseal portal system.
Follicle Stimulating Hormone
Promotes follicle and ova development in females and stimulates secretion of estrogens.
Stimulates cell growth and replication by accelerating the rate of protein synthesis.
Melanocyte Stimulating Hormone
Stimulates the pigment cells in the skin increasing the amount of pigment produced.
Posterior Pituitary Gland
This gland contains axons from two different groups of neurons located within the hypothalamus.
Hormone released in response to such stimuli as a rise in the concentration of electrolytes in the blood. Reduces the amount of water lost in the urine.
Hormone that stimulates smooth muscle contractions in the uterus, and pushes milk out of the mammary glands.
Hormone secreted by the thyroid contains four iodine atoms, makes up 90% of thyroid secretions.
Endocrine cells sandwiched between the follicle cells and their basement membrane. Produce calcitonin.
Hormone that stimulates osteoclasts, inhibits the bone building functions of osteoblasts.
Stimulates the conservation of sodium ions by targeting cells that regulate the ionic composition of excreted fluids.
Organ that lies in the j-shaped loop between the stomach and the proximal portion of the small intestine.
Hormones produced by the cells surrounding the ova that support the maturation of the ova and the growth of the uterine wall.
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