Endocrine System Flashcards
(27 cards)
Hypothalamus
•Secretes releasing and inhibiting hormones (releasing factors) that control the pituitary gland
Anterior Pituitary
•secretes HGH, TSH, ACTH, LH,FSH, and PRL
Posterior Pituitary
•secretes ADH AND OCT
Thyroid Gland
•secretes Thyroxine and calcitonin
Adrenal cortex
•secretes cortisol, aldosterone, and gonadocorticoids
Adrenal Medulla
•secretes norepinephrine and epinephrine (fight or flight hormones)
Ovaries
•secretes progesterone and estrogen
Testis
•secretes testosterone
Parathyroid
•secretes PTH
HGH
•stimulates cell division, bone and muscle growth and metabolic functions
TSH
•stimulates the thyroid gland
Maintains metabolism
ACTH
•stimulates the adrenal cortex to release cortisol
LH
•stimulates the production of sex hormones in ovaries and testis
FSH
•stimulates the production of ova and sperm in the ovaries and testes
PRL
•stimulates the production of milk by the mammary glands
ADH
- promotes the retention of water by the kidneys
* water gets reabsorbed into the body when there’s not enough water in the body
OCT
•stimulates uterine muscle contraction and the release of milk by the mammary glands
Thyroxine
•increases metabolic rate and regulates growth and development
affects all tissues (non target)
Calcitonin
- reduces blood calcium levels by:
- inhibiting osteoclasts (process of breaking down the bone to release calcium into blood stream)
- decreasing the reabsorption of calcium by the kidneys
PTH
- increases blood calcium levels by:
- osteoclasts (process of breaking down the bone to release stored calcium into bloodstream)
- causes the intestine to absorb calcium from food and kidneys to reabsorb calcium.
Cortisol
•stimulates tissues to raise blood glucose levels and break down protein
Aldosterone
•promotes reabsorption of sodium and water by the kidneys
Gonadocorticoids
•promotes secondary sexual characteristics
Norepinephrine & Epinephrine
- fight or flight response
* raise blood glucose levels