Question

1. What is the target organ of corticotropin?

1. adrenal medulla
2. adrenal cortex
3. anterior pituitary
4. hypothalamus
5. posterior pituitary

2. What is the endogenous compound that inhibits the release of MSH?

1. Cortisol
2. GH-IH
3. Dopamine
4. T4/T3
5. Epinephrine

3. What is the pancreatic hormone that stimulates lipolysis and glycogenolysis:

1. Amylin
2. Insulin
3. pancreatic polypeptide
4. glucagon
5. gastrin

4. Calcitonin is synthesized/released from what cells:

1. Pinealocytes
2. Delta cells
3. Juxtaglomerular cells
4. Alpha cells
5. Clear (C) cells

5. In addition to stimulating the ovarian secretion of estrogens and progesterone, LH directly induces what physiological process:

1. GnRH release
2. Ovulation
3. prolactin release
4. labor/uterine contractions
5. menstruation

Answer 1

1. b) Adrenal cortex

Explanation: Corticotropin is the hormone released by the posterior pituitary gland. It acts on the adrenal cortex to cause release of cortisol.

2. a) Cortisol

explanation: MSH is released by the corticotrophs of the anterior pituitary. Cortisol is the hormone of adrenal cortex that inhibits the secretion from corticotroph cells.

3. d) glucagon

Explanation: Glucagon is the pancreatic hormone released to increase blood glucose level by causing glycogenolysis and gluconeogenesis.

4. e) Clear C cells

Explanation: calcitonin is the hypocalcemic hormone released by the C cells of thyroid.

5. b) Ovulation