Human Reproduction - NEET Short Note + 20+ PYQS 😍
HUMAN REPRODUCTION [ Short Notes ] Testes are formed within the abdomen. Soon after the birth or at the 8 th month of pregnancy they descent into the scrotal sac (scrotum) and inguinal canal . The low temperature (2-2.5 C less than the body temperature) of scrotum helps for proper functioning of testes and for spermatogenesis. Seminal plasma is rich in fructose, Ca2+ and enzymes. A pair of Cowper’s glands (bulbo-urethral glands) in Males lubricates the penis. è Ampulla is wider part & Isthmus is narrow part of oviducts (fallopian tubes) of females. è Labia majora is a large, fleshy, fatty and hairy outer folds. surrounds vaginal opening. A membrane which partially covers the vaginal opening called hymen also called Maiden head. After spermatogenesis, sperm heads become embedded in the Sertoli cells and are finally releases from seminiferous tubules. It is called spermiation . Under the control of FSH and testosterone, Sertoli cells secrete an androgen bin