Hormones

Question 1

Thyroid-stimulating hormone (TSH)
Target:
Actions:

Answer 1

Target: Thyroid gland
Actions: stimulates synthesis and secretion of thyroid hormones

Question 2

Follicle-stimulating hormone
Target:
Actions:

Answer 2

Target: Ovary; Testis
Actions: stimulates growth of follicles and estrogen secretion; acts on sertoli cells to promote maturation of sperm

Question 3

Lutenizing hormone (LH)
Target:
Actions:

Answer 3

Target: Ovary; Testis
Actions: stimulates ovulation of ripe follicle and formation of corpus luteum, stimulates estrogen and progesterone synthesis by corpus luteum; stimulates interstitial cells of Leydig to synthesize and secrete testosterone

Question 4

Growth hormone (GH)
Target:
Actions:

Answer 4

Target: most tissues
Actions: promotes growth in stature and mass, stimulates production of insulin-like growth factor (IGF-I), stimulates protein synthesis

Question 5

Prolactin
Target:
Actions:

Answer 5

Target: mammary glands
Actions: promotes milk secretion and mammilary growth. No known tropic role, function unclear in males and nonlactating females

Question 6

Adrenocorticotropic hormone (ACTH)
Target:
Actions:

Answer 6

Target: Adrenal cortex
Actions: promotes synthesis and secretion of adrenal cortical hormones

Question 7

Beta-liptropin, beta-endorphin
Target:
Actions:

Answer 7

Target: ?
Actions: physiologic role not established

Question 8

Tropic hormone:
Corticotropin-releasing hormone
Physiological effects on pituitary:

Answer 8

Stimulates secretion of ACTH, beta-LPH, beta-endorphin

Question 9

Tropic hormone:
Gonadotropin-releasing hormone (GnRH)
Physiological effects on pituitary:

Answer 9

Stimulates secretion of FSH and LH

Question 10

Tropic hormone:
Growth hormone releasing hormone (GHRH)
Physiological effects on pituitary:

Answer 10

Stimulates secretion of GH

Question 11

Tropic hormone:
Somatotropin release-inhibiting factor (SRIF)
Physiological effects on pituitary:

Answer 11

Inhibits secretion of GH

Question 12

Tropic hormone:
Prolactin-stimulating factor (?)
Physiological effects on pituitary:

Answer 12

Stimulates prolactin secretion

Question 13

Tropic hormone:
Prolactin-inhibiting factor (PIF)
Physiological effects on pituitary:

Answer 13

Dopamine

inhibits prolactin secretion

Question 14

Tropic hormone:
Thyrotropin-releasing hormone
Physiological effects on pituitary:

Answer 14

Stimulates secretion of TSH and prolactin

Question 15

Vasopressin (ADH)

Effects:

Answer 15

able to induce contraction of vascular smooth muscle, promotes water re-absorption by renal tubules

Question 16

Oxytocin

Effects:

Answer 16

stimulates uterine contractility during birth and release of milk from mammary glands