Quiz 2 Last years

Question 1

Neurohormone

Answer 1

a hormone that is secreted directly from a neuron into the blood

Question 2

Hypophysectomy

Answer 2

removal of the pituitary gland

Question 3

Luteolysis

Answer 3

regression of the corpus luteum

Question 4

Acidophil

Answer 4

cells with cytoplasmic granules that stain readily with acid dyes

Question 5

Cryptorchidism

Answer 5

failure of the mammalian testes to descent into the scrotum

Question 6

Mention the cause, genotype and phenotype (tubular tract, external genitalia and brain behavior) of testicular feminization syndrome

Answer 6

Genotype- XY
Gonads- Testes
Reproductive hormones- Testosterone and Antimullerian hormone but no testosterone receptor activity
Tubular tract- no male or female tract
external genitalia- female
brain- male

Question 7

The function of Wilms tumor Gene

Answer 7

suppresses Steroid factor 1 to avoid the development of steroidogenic cells instead of supporting cells

Question 8

Function of SOX9

Answer 8

determines sex- male formation of Sertoli cells which form the testes

Question 9

Function of 5 alpha-reductase enzyme

Answer 9

converts testosterone into dihydrotestosterone which helps develop the male external genitalia

Question 10

Function of aromatase enzyme

Answer 10

turns testosterone into estrogen

Question 11

Function of antimullerian hormone (AMH)

Answer 11

inhibits the development of the female tract (Mullerian tract)

Question 12

Diagram how sexual development of the brain is achieved in males

Answer 12

Testes
testosterone
goes into the brain
aromatase turns it into estrogen

Question 13

Diagram how sexual development of the brain is achieved in females

Answer 13

Ovaries
estrogen
alpha fetoprotein binds to estrogen to prevent it from entering the brain blood barrier

Question 14

Mention the function and location of stereocilia in the male genital tract

Answer 14

facilitate concentration and maturation of sperm cells by increasing surface area
Location- lining of epididymis