During coitus the human male ejaculates about

1. 200 to 400 million sperms

2. 100 to 200 million sperms

3. 200 to 300 sperms

4. 200 to 300 billion sperms

The main cause of the disintegration of the endometrial lining

1. LH surge

2. Degeneration of corpus luteum

3. Ovulation during mid-cycle

4. Implantation leads to pregnancy

The wider part of the fallopian tube is

1. Infundibulum

2. Isthmus

3. Ampulla

4. Cervix

Morula stage is related to:

1. 8 -16 celled

2. After the fertilization stage

3. Before the blastocyst stage

4. All of these

Fertilization membrane is formed to
1. Faciliate entry of sperm into egg.
2. Provide stability to egg.
3. Prevent ectopic pregnancy.
4. Prevent polyspermy

Seminal plasma of humans is rich in
1. Fructose and certain enzymes, poor in Ca²⁺.
2. Fructose, Ca²⁺ and certain enzymes.
3. Fructose, Ca²⁺ but no enzymes.
4. Glucose, certain enzymes but no Ca²⁺

Which of the following is very close to the time of
ovulation?
1. Peak of progesterone.
2. Minimum level of estrogen.
3. Peak of LH and FSH.
4. Thickest layer of endometrium.

Find the incorrect statement

1. scrotum helps in maintaining low temperature of the testes 2-2.5$°C$ less than normal, necessary for spermatogenesis

2. Each testis has about 250 testicular lobules

3. Transfer of sperms into female genital tract is insemination

4. Seminiferous tubules open into rete testis through vasa efferentia

Oogenesis differs from spermatogenesis in a number of aspects. One of the following is however a similarity between the two

1. Growth phase is  prolonged in both of them an starts before birth

2. Both give rise to non-motile gametes

3. Both produce equal number of gametes

4. Both occur inside primary sex organ

Which of the following occur during pre ovulatory phase?

a. Formation of corpus heamorrhagicum

b. Luteal phase

c. Secretory phase

d. Follicular phase

e. Proliferative phase

1. d & e only

2. a, b & c only

3. a, b & e only

4. c & d only