Androgen binding protein which helps in concentrating testosterone in the seminiferous tubule, and which inhibits $ICSH$ secreted by anterior pituitary and $GnRH$ production by hypothalamus is secreted by

The region where sperm enters the egg is called

Given diagram refers to spermatogenesis and oogenesis in humans. Identify $A$ to $H$ correctly.

Fluid filled cavity called $…A…$ is developed in $…B…$ follicle called $…C….$ Here $A, B$ and $\mathrm{C}$ are

A boy who has not passed through puberty sustains an injury to his anterior pituitary such that $FSH$ is no longer released, but $LH$ secretion is normal. After he grows to maturity, one would expect that he would