List the three hormones produced in women only during pregnancy. What happens to the levels of estrogen and progesterone during pregnancy?

Hat is ovulation? What happens to the Graafian follicle after ovulation?

List the different parts of the human oviduct through which the ovum travels till it meets the sperm for fertilisation.

Write the function of each one of the following:
Oxytocin.

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

A woman passes out hCG in the urine during the pregnancy. Why?

Draw a labelled diagram of a human blastocyst. How does it get implanted in the uterus?

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

1. How many spermatozoa are formed from one secondary spermatocyte?
2. Where does the first cleavage division of zygote take place?

From where the parturition signals arise-mother or foetus? Mention the main hormone involved in parturition.