Name the muscular and the glandular layers of human uterus. Which one of these layers undergoes cyclic changes during menstrual cycle? Name the hormone essential for the maintenance of this layer.

What is the number of chromosomes in the following cells of a human female?
Primary oocyte.

Write the location and functions of myometrium and endometrium.

Name the muscular and glandular layers of human uterus. Which one of these layers undergoes cyclic changes during menstrual cycle? Name the hormone essential for the maintenance of this layer.

Corpus luteum in pregnancy has a long life. However, if fertilisation does not take place, it remains active only for 10-12 days. Explain.

Where are fimbriae present in a human female reproductive system? Give their function.

Write the location and functions of the following in human testes:

1. Sertoli cells.
2. Leydig cells.

Differentiate between primary and secondary follicles.

Mention the importance of LH surge during menstrual cycle.

Study the figure given below and answer the questions that follow:
Identify ‘a’ in the figure and mention its function.