Human Reproduction

Changes in GnRH pulse frequency in females is controlled by circulating levels of

• estrogen and inhibin

• progesterone only

• progesterone and inhibin

• progesterone and inhibin

Identify the correct statement on 'inhibin'

• is produced by granulosa cells in ovary and inhibits the secretion of FSH

• is produced by granulosa cells in ovary and inhibits the secretion of LH

• is produced by nurse cells in testes and inhibits the secretion of LH

• is produced by nurse cells in testes and inhibits the secretion of LH

Select the incorrect statement

• LH and FSH triggers ovulation in ovary

• LH and FSH decrease gradually during the follicular phase

• LH triggers secretion of androgens from the Leydig cells

• LH triggers secretion of androgens from the Leydig cells

Fertilisation in humans is practically feasible only if

• the ovum and sperms are transported simultaneously to ampullary -isthmic junction of the fallopian tube

• the ovum and sperms are transported simultaneously to ampullary -isthmic junction of the cervix

• the sperm are transported into cervix within 48 hrs of releases of ovum in uterus

• the sperm are transported into cervix within 48 hrs of releases of ovum in uterus

What is the correct sequence of sperm formation

• spermatid, spermatocyte, spermatogonia, spermatozoa

• Spermatognia, Spermatocyte, Spermatozoa, Spermatid

• Spermatogonia, spermatozoa, Spermatocyte, Spermatid

• Spermatogonia, spermatozoa, Spermatocyte, Spermatid

Menstrual flow occurs due to lack of

• progesterone

• FSH

• Oxytocin

• Oxytocin

One of the legal methods of birth control is 

• abortion by taking an appropriate medicine

• by abstaining from coitus from day 10-17 of the menstrual cycle. 

• by having coitus at the time of daybreak

• by having coitus at the time of daybreak

Which one of the following is wrong about Chara?

• upper oogonium and lower round antheridium

• Globule and nucule present on the same plant

• Upper antheridium and lower oogonium

• Upper antheridium and lower oogonium

Which one of the following events in not associated with ovulation in human female?

• Decrease in oestradiol

• Full development of Graafian follicle

• Release of secondary oocyte

• Release of secondary oocyte

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

• Granulosa

• Theca interna

• Stroma

• Stroma