Genital embryology

Question 1

Female

Answer 1

default development:
Mesonephric degenerates
Paramesonephric develops

Question 2

Male

Answer 2

SRY on Y chromosome; produces testis-determining factor (testes development), which develop testes

Sertoli cells secrete Mullerian inhibitory factor MIF, which suppresses development of paramesonephric duct

Leydigs secretes androgens that stimulate the development of mesonephric ducts.

Question 3

Paramesonephric (Mullerian) duct

Answer 3

Female internal structures:
fallopian tube,
uterus,
upper portion of vagina (vs. lower from urogenital sinus)

Question 4

Mullerian duct abnormalities

Answer 4

Anatomical defects that present as

primary amenorrhea in females with fully developed sexual characteristics (which indicate functional ovaries)

Question 5

Mesonephric (Wolffian) duct

Answer 5

Male internal structures (except prostate):
Seminal vesicles,
Epididymus,
Ejaculatory duct,
Ductus deferens

SEED

Question 6

Bicornuate uterus

Answer 6

From incomplete fusion of paramesonephric duct;

can lead to urinary tract abn and miscarriages.