Hormones

Question 1

oxytocin

Answer 1

secreted by pos. pit. in response to childbirth, stim uterine contraction and emotional bonding

Question 2

vasopressin/adh

Answer 2

posterior pituitary, from high plasma osmolality, retains water by opening aquaporins in collecting duct and DCT

Question 3

FSH

Answer 3

anterior pituitary, from GnRH. initiates follicle growth, sperm developement and maturation of cells

Question 4

LH

Answer 4

anterior pit. from GnRH and estrogen spike. causes ovulation, form of corpus lutem and causes leydig to release testosterone

Question 5

ACTH

Answer 5

anterior pit. from CRH and stress causes adrenal to release corticosteroids

Question 6

prolactin

Answer 6

anterior pituitary, from fless progesterone at end of pregnancy. causes mammary glands to enlarge and milk production.

Question 7

endorphin

Answer 7

from anteri. pit. in response to pain, causes pain relief

Question 8

GH

Answer 8

from GHRH, causes growth of long bones and anabolism

Question 9

Calcitonin

Answer 9

thyroid, from high [Ca2+], causes reduction of [Ca2+]

Question 10

T4&T3

Answer 10

thyroid, from TSH increases metabolism

Question 11

parathyroid hormone

Answer 11

parathyroid. from low plasma [Ca2+], causes increased [Ca2+]

Question 12

glucagon

Answer 12

a pancreatic cells, from low blood sugar. increases blood gluc.

Question 13

insulin

Answer 13

B cells of pancreas. from high blood gluc. decreases blood gluc.

Question 14

somatostatin

Answer 14

from pancreatic delta cells. from high hormone levels, suppresses GH TSH CCK insulin and glucagon

Question 15

cortisol

Answer 15

adrenal cortex, from stress causes more blood gluc and suppresses immune system

Question 16

aldosterone

Answer 16

adrenal cortex from ACTH, agiotensin 2 and low BP, makes Collecting duct and DCT reapsorb NA and release K to increase water and BP

Question 17

epinephrine

Answer 17

adrenal medulla, from stress, increases symp. system

Question 18

estrogen

Answer 18

ovaries and adrenal: from FSH, causes endometrial development and LH surge, as well as secondary sex characteristics

Question 19

progesterone

Answer 19

ovary, corpus lut. adrenal, from ovulation. maintains endometrium**

Question 20

testosterone

Answer 20

leydig cells and ovaries, from GnRH->LH, develops secondary sex characteristics

Question 21

NorEpi

Answer 21

adrenal medulla, from stress: causes symp. system

Question 22

hCG

Answer 22

placenta, from implantation maintains corpus luteum

Question 23

GnRH

Answer 23

hypothalamus, from puberty or menses, increases LH and releases FSH