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18 Cards in this Set

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  • Back
Endocrine System
Endocrine organs secrete hormones, which are signaling molecules that trave in the bloodstream and bind to receptors at particular places in the body. Endocrine organs are ductless and have a rich blood supply. Control of hormone secretion is done by blood-borne molecules(hurmonal), neural impulses(neural) and other hormones(hormonal)
Posterior Pituitary (neurohypophysis)
Base of brain, posterior half of piutary gland. Receives signals via direct neural connection from hypothalamus
Antidiuretic Hormone (ADH)
Increase permeability of collecting ducts in kidney, decreases water excretion
responsible for feeling of attachment, smooth muscle contraction of uterus, assists location
Anterior Pituitary (adenohypophysis)
Base of brain, posterior half of pituitray gland. Recieves signals through 'hypophyseal portal system' of vessels from hypothalamus
Growth Hormone
causes growth in hight
prepares breast for lacation, stimulate milk supply
Leutenizing Hormone
Influences uterine and ovulaory cycles in females, stimulates Leydig cells to produce testosterone in male
Follicle Stimulating Hormone
influences uterine and ovulatoy cycles in females; sperm maturation in males
Releasing Hormone
Several types; stimulate other hormones
Thyroid Gland
Located in anterior neck, around larynx. Follicles surround by parafollicular cells
Thyroxine and Triiodothyronine
Produced in follicles, increase metabolic rate, reequire iodine to produce calcitonin
Produced by parafollicular cells, decreased circulating calcium in blood by inhibiting bone absorption
Parathyroid Gland
Just deep to thyroid gland, small
Parathyroid Hormone
Increase circulating calcium in blood by increasing bone absorption and calcium uptake in gut
Accessory digestive organ, has exocrine function too(digestive enzymes). Islets with alpha and beta cells have endocrine function
Secreted by alpha cells, signal liver to released stored glycogen, increase blood glucose
Secreted beta cells, signas cells to take up glucose from blood