Ovum Structure

Q.

What are the divisions of pituitary gland?

Q.

Entry by other sperms into the oocyte is stopped after the first one penetrates the

1. Granulosa cells

2. Corona radiata

3. Zona pellucida

4. Cytoplasm

Q.

Mature ovum in human being is surrounded by

1. Graafian follicle

2. Corona radiata

3. Zona pellucida

4. Zona interna

Q. Explain the structure of ovum with diagram.

Q. Fertilizin is a chemical substance produced from

1. Polar bodies
2. Middle piece of sperm
3. Acrosome
4. Mature eggs

Q. In human, during fertilisation, a sperm firstly comes in contact with which layer of the ovum.

1. Vitelline membrane
2. Zona pellucida
3. Jelly coat
4. Corona radiata

Q.

The membranous cover of the ovum at ovulation is

1. corona radiata

2. zona radiata

3. zona pellucida

4. chorion

Q.

The main function of the multiple cortical granules released from the oocyte into the perivitelline space is -

1. Aid in the entry of 2 sperms into the ovum to form fraternal twins

2. Prevent binding of additional sperm

3. Activate special receptors to which sperm attaches

4. None of the above

Q. Which of the following layers in an antral follicle is acellular?

1. Zona pellucida
2. Granulosa
3. Theca interna
4. Stroma