In the absence of testes, female form develops passively D. Differentiation of external genitalia 1. Male and female structures arise from the same structures 2. Labioscrotal swellings 3. During 8 th week, external genitalia begin to develop 4. Urethral folds fuse along midline to form spongy urethra i. Tip of fold remains unfused ii.
Differentiation is dependent on the presence or absence of testosterone a.
If testosterone is present, male external genitalia develop b. Both male and female ducts but male external genitalia 3. Gonads do not match accessory reproductive structures 5. Possess both ovarian and testicular tissues F. Descent of the gonads 1. During the last two months of fetal development a. Gonads descend 2.