Quiz 2 Last years Flashcards
Neurohormone
a hormone that is secreted directly from a neuron into the blood
Hypophysectomy
removal of the pituitary gland
Luteolysis
regression of the corpus luteum
Acidophil
cells with cytoplasmic granules that stain readily with acid dyes
Cryptorchidism
failure of the mammalian testes to descent into the scrotum
Mention the cause, genotype and phenotype (tubular tract, external genitalia and brain behavior) of testicular feminization syndrome
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
The function of Wilms tumor Gene
suppresses Steroid factor 1 to avoid the development of steroidogenic cells instead of supporting cells
Function of SOX9
determines sex- male formation of Sertoli cells which form the testes
Function of 5 alpha-reductase enzyme
converts testosterone into dihydrotestosterone which helps develop the male external genitalia
Function of aromatase enzyme
turns testosterone into estrogen
Function of antimullerian hormone (AMH)
inhibits the development of the female tract (Mullerian tract)
Diagram how sexual development of the brain is achieved in males
Testes
testosterone
goes into the brain
aromatase turns it into estrogen
Diagram how sexual development of the brain is achieved in females
Ovaries
estrogen
alpha fetoprotein binds to estrogen to prevent it from entering the brain blood barrier
Mention the function and location of stereocilia in the male genital tract
facilitate concentration and maturation of sperm cells by increasing surface area
Location- lining of epididymis