The Vulva - Anatomy, Physiology, and Pathology. Isthmus Ampulla Infundibulum Fimbria Ostium. Sexual differentiation is complete at around 12 weeks of gestation. The labia minora become less prominent. Hair is initially sparse and straight, but gradually becomes darker, denser, and curlier as growth spreads outward and upward toward the thighs and mons pubis. During early childhood, the labia majora look flat and smooth because of decreasing levels of body fat, and the diminished effects of maternal hormones. Gartner's duct Epoophoron Vesicular appendages of epoophoron Paroophoron.
Aspen. Age: 25.
Human reproductive biology.
Alia. Age: 28.
A Y chromosome results in a male, and an X chromosome results in a female. If testes are formed, they begin to secrete androgens that affect the external genital development at about week 8 or 9 of gestation. The labioscrotal swellings become the labia majora in females, or they fuse to become the scrotum in males. The color, size, length and shape of the inner labia can vary extensively from woman to woman.