4.1 Sexual Reproduction in Humans Past Paper Qs

State the name of the cells in the testes that secrete testosterone.

{Leydig/ interstitial} cells

Prevents {it hydrolysing sperm contents/ autolysis}

Explain how the function of the urethra is different in male and female mammals.

In males G (urethra) carries urine and semen AND in females only carries urine (1)

B= Oviducts

Name X,Y and Z and their function

Zona pellucida and Corona radiata (1)

Using the graphs and your knowledge of hormonal control of the human reproductive cycle, explain the effects of the hormonal changes which are shown. Discuss the similarities and differences in the control of ovulation in rabbits and humans.

With reference to Graph 2.1, explain the functions of the hormones oestrogen and progesterone during pregnancy. [4]