Pituitary and Sexual Development Review Quiz

1. The american aligator is an example of chromosomal sex determination because it has an X and Y chromosome.
True
False
2. Gonadal sex in most mammals is determined by the expression of the SRY gene on the Y chromosome in the male and lack of SRY gene expression in the female.
True
False
3. In the mammalian female, the lack of DHT leads to formation of the clitoris and labia. This is an example of phenotypic sex.
True
False
4. Brain sex in mammals is the result of fetal sex steroid exposure.
True
False
5. A human female with a single X chromosome would have
a testis.
a normal female appearance.
larger than normal breasts.
incomplete ovarian development.
6. Which of the following are direct effects of SRY gene expression? (select all that apply)
Choice 1 Development of Sertoli cells within the primary sex chords.
Choice 2 Maturation of Leydig cells and secretion by these cells of testosterone
Choice 3 Production of antimullerian hormone by Sertoli cells.
Choice 4 Formation of primary sex chords.
7. The primordial germ cells in mammals originates in the yolk sack placenta and then migrates through the blood stream to the germinal ridge.
True
False
8. The gonad develops from the pronephros.
True
False
9. The secondary sex chord forms the seminiferous tubules under the influence of SRY while the cortical sex chords form in the absence of SRY and develop into the egg nests.
True
False
10. Descent of the testis involves which of the following? (select all that apply)
Choice 1 growth of the visceral organs
Choice 2 attachment of the gubernaculum to the inguinal ring
Choice 3 growth of the gubernaculum into the developing scrotum
Choice 4 regression of the gubernaculum
11. Identify which of the following are direct effects of testosterone from the fetal testis? (select all that apply)
Choice 1 regression of the Wolfian ducts
Choice 2 development of the mullerian ducts
Choice 2 development of the vas efferentia
Choice 3 development of the caudal epididymis
Choice 4 development of the vas deferens
Choice 4 development of the seminal vesicles
Choice 4 development of the disseminant prostate
Choice 4 development of the urethra
12. In the human, which of the following would be true of an XY individual who had testicular feminization? (select all that apply)
Choice 1 would lack 5 alpha reductase and DHT
Choice 2 would lack an androgen receptor
Choice 3 would have normal female breast development
Choice 4 would have a clitoris
Choice 4 would not have menstruated by 18 years of age
Choice 4 would have a testis
Choice 4 would have a posterior vagina
Choice 4 would have a cervix
13. Which of the following are derived from the mullerian ducts? (select all that apply)
Choice 1 ovary
Choice 2 infundibulum
Choice 3 oviduct
Choice 4 uterus
Choice 4 cervix
Choice 4 anterior vagina
Choice 4 posterior vagina
Choice 4 clitoris
Choice 4 labia