Reproductive System

Peg cells are non-ciliated epithelial cells within the fallopian tube. Their cellular secretions capacitate spermatozoa by removing glycoproteins and other molecules from their cell membranes.

Granulosa cells invade the ruptured antrum and proliferate to become the CC.

Progesterone stimulates the maturation of the uterine lining and the secretions of the uterine glands.

Female babies are born with all of their primordial follicles (about two million) paused at the prophase stage of meiosis I. Males are XY and females are XX, not the reverse.

Seminiferous tubules must precede the epididymis; and the ejaculatory duct must precede the urethra.

The ducts from the seminal glands join with the vas deferens to become the ejaculatory ducts and enter the prostate. There they both join the urethra which then exits the prostate.

Each ejaculatory duct is formed by the union of the vas deferens with the duct of the seminal vesicle. They pass through the prostate and open into the urethra.

Female babies are born with a uterus, so this is the primary sex characteristic

The thecal cells produce androgens (androstenedione) which diffuse to the granulosa cells which convert androgens to estrogens.

The interstitial or Leydig cells of eth testes produce testosterone.