Sertoli cells are found in
Ovaries and secrete progesterone
Testes and secrete testosterone
Seminiferous tubules and after spermiogenesis, sperm heads become embedded in them
Adrenal cortex and secrete adrenaline
Fertilizin is a chemical substance produced from
Fluid filled cavity called $...A...$ is developed in $...B...$ follicle called $...C....$ Here $A, B$ and $\mathrm{C}$ are
Given below is a diagrammatic sketch of a portion of human male reproductive system. Which of the following part contributes to the maximum portion of semen?
In the egg of bird, shell and shell membranes are
Which of these sets of cells divide slowly