Question

6. Slide of Testis In the space below, draw and label a cross section through a seminiferous tubule including the sperm, Leydig and Sertoli cells.

a) ____________ cells, between seminiferous tubules are stimulated to secrete _____________ by the anterior pituitary hormone _______________.

b) Sertoli cells have hormone receptors for ___________ on the outside of the plasma membrane and for the hormone ____________ inside of the cell.

c) In addition to production and maturation of sperm, testosterone gives rise to ____________________________ in males

Answer 1

a) Leydig cells, Testosterone, ICSH

Leydig cells also called as interstitial cells lie between seminiferous tubules. these cells are stimulated by interstitial cell stimulating hormone (ICSH) from anterior lobe of pituitary to produce male sex hormones testosterone.

b)Follicle stimulating hormone, Testosterone.

C) Secondary sex characters.

Testosterone in addition to the growth and maturation of sperms causes growth and development of secondary sex characters like growth of beard, moustaches, development of masculine voice development of male musculature.