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Pituitary
22.3--Hypothalamus and Pituitary
Term | Definition |
---|---|
HGH - Human Growth Hormone | Target: Liver and Other tissue. FUnctions: Stimulates liver, muscle, cartilage, and bone to synthesize and secrete growth factors for body cells, protein synth, lipolysis, and elevation of blood glucose |
TSH - Thyroid Stimulating Hormone | Synth and secretion of thyroid hormones by thyroid gland |
FSH - Follicle Stimulating Hormone | Target: Testes and Ovaries; Action: Females - initiates oocyte production and estrogen secretion. Males - Sperm |
LH - Luteinizing Hormone | Target: Testes and Ovaries; Action: Females - Secretion of estrogens, progesterone, ovulation, formation of corpus luteum. Males - Stimulates testes to produce testosterone. |
PRL - Prolactin | Promotes milk secretion; mammary glands |
Adrenocorticotropic Hormone (ACTH) | Adrenal Cortex; Stimulates secretion of glucocorticoids |
MSH - Melanocyte Stimulating Hormone | Can cause skin darkening |
Hypothalamohypophyseal Tract | Takes hormones from neurosecretory cell body in hypothalamus to trigger exocytosis of vesicles and release of hormone. |
Neurosecretory Cell Bodies | In Hypothalamus; Produce hormones of posterior pituitary. Transfer via vesicle exocytosis |
Oxytocin (OT) | Target: Uterus and Mammary Glands. Action: Stimulates contraction of smooth muscle fibers of uterus during childbirrth and milk ejection |
ADH (Vasopressin) | Target: Kidney, Sudoriferous Glands, Arterioles. Decreases water loss by decreasing urine volume, perspiration, and raises blood pressure by constricting arterioles. |