Question

(a) Draw the sectional view of a seminiferous tubule of human. Label its any six parts.

(b) Name the pitutary hormones involved in the process of spermatogenesis. State their functions. [5 marks]

Answer 1

(a) [0.5 mark for each point]
Fig. Sectional view of Seminiferous tubule

(b) The pituitary hormones involved in the process of spermatogenesis are:

(i) Luteinising hormone - Luteinising hormone acts at the Leydig cells and stimulates synthesis and secretion of androgens, which in turn stimulates the process of spermatogenesis.

(ii) Follicle stimulating hormone - This hormone acts on the Sertoli cells and stimulates secretion of some factors which help in the process of spermiogenesis. [2 marks]