Endocrine System

Question 1

Pituitary anterior: Growth Hormone (STH)

Answer 1

Stimulates growth of bone and muscle

Question 2

Pituitary anterior: Adrenocorticotrophic hormone (ACTH)

Answer 2

Stimulates the adrenal cortex to secrete cortin

Question 3

Pituitary anterior: Thyroid Stimulating Hormone (TSH)

Answer 3

Stimulates thyroid to secrete thyroxin

Question 4

Pituitary anterior: Follicle Stimulating Hormone (FSH)

Answer 4

Stimulates development of follicles in ovaries and sperm in testes

Question 5

Pituitary anterior: Luteinizing hormone (LH)

Answer 5

Stimulates the development of corpus luteum in ovaries and secretion of testosterone by testes

Question 6

Pituitary anterior: lactogenic hormone (prolactin)

Answer 6

Stimulates mammary glands to secrete milk

Question 7

Pituitary posterior: oxytocin

Answer 7

Stimulates contraction of uterus

Question 8

Pituitary posterior: vasopressin

Answer 8

Affects contraction of arterial walls and rate of water reabsorption by kidneys

Question 9

Thymus gland

Answer 9

• irregular shape
• located in mediastinum, superior to heart
• prominent in infants and young children
• atrophy results with age

-Thymosin: stimulates the production of white blood cells (immunity)

Question 10

Pineal gland

Answer 10

• part of diencephalon, small in size
• composed of neurons and neuroglia
• functions is in doubt: may regulate rhythms
• melatonin: thought to inhibit secretion of FSH, LH
• important in birds and reptiles, sensitive to light, regulates cycles