Mention the sites of action of the hormones GnRH and FSH during spermatogenesis in human males. Give one function of each of the hormones.

Comment on the hormonal control of spermatogenesis in humans

Spermatogenesis in human males is a hormone regulated process. Justify.

Mention the name of hormones and their source organs produced only during pregnancy.

Give a detailed description of the process of gametogenesis in both males and females. Also, mention the differences between spermatogenesis and oogenesis.

Which one of the following is not a second messenger in hormone action?

Consider the following statements each with two blanks. (A) Seminiferous tubules produce overset((i))"_____" while Leydig's cells produce overset((ii))"_____" . (B) In females, urethra is small and conducts overset((iii))"_____" while in males it conducts urine and overset((vi))"_____" . (C) The process of formation of spermatozoa form spermatogonia is called overset((v))"_____" and the process of maturation of spermatids into spermatozoa is called overset((vi))"_____" . Which one of the following options, gives the correct fill ups for the respective blanks numbers from (i) to (vi) in the statements?

Enlist the hormones regulating menstrual cycle and mention the role of each.

(i) When and where does spermatogenesis occur in a human male? (ii) Draw the diagram of a mature human male gamete. Label the following parts: acrosome, nucleus, middle piece and tail. (iii) Mention the functions of acrosome and middle piece.