(a)[1]
State where FSH is secreted from.
(b(i))[4]
Female mice lacking FSH receptors were sterile. Their ovaries contained normal primary and secondary follicles, but there were no Graafian (ovarian) follicles or corpora lutea. Explain these findings.
(b(ii))[3]
Discuss what these results imply about the role of FSH in the formation of spermatozoa in male mice. (Mean number of spermatozoa per mouse with FSH receptors: $5.6 \times 10^6$; without FSH receptors: $3.6 \times 10^6$. Percentage of spermatozoa able to swim actively with FSH receptors: $62\%$; without FSH receptors: $47\%$.)