Foetal ejection reflex in human female is induced by
the pressure exerted by the amniotic fluid
the release of oxytocin from pituitary
fully developed foetus and placenta
fully developed foetus and placenta
B.
the release of oxytocin from pituitary
Oxytocin (childbirth hormone) secreted by neurohypophysis of pituitary gland stimulates contraction of uterus muscles, including labour pain for child birth, when secretion of progesterone hormone declines, making the end of pregnancy. As the sensory impulse of increasing labour pain reaches hypothalamus, more and more oxytocin is released from posterior pituitary under a positive feedback regulation childbirth, it dilates the cervix (vaginal stretching).
Given below is a diagrammatic sketch of a portion of the human male reproductive system. Select the correct set of the names of the parts labelled A, B, C, D.
|
A |
B |
C |
D |
|
Ureter |
Prostate |
Seminal Vesicle |
Bulbourethral gland |
|
A |
B |
C |
D |
|
Vas deferens |
Seminal vesicle |
Prostate |
Bulbourethral gland |
|
A |
B |
C |
D |
|
Vas deferens |
Seminal vesicle |
Bulbourethral gland |
Prostate |
|
A |
B |
C |
D |
|
Vas deferens |
Seminal vesicle |
Bulbourethral gland |
Prostate |
Cu ions released from copper -releasing Intra Uterine Devices (IUDs)
make uterus unsuitable for implantation
increase phagocytosis of sperms
suppress sperm motility
suppress sperm motility
The permissible use of the technique amniocentesis is for
detecting the sex of the unborn foetus
artificial insemination
transfer of embryo into the uterus of a surrogate mother
transfer of embryo into the uterus of a surrogate mother
Which one of the following is the correct matching of the events occurring during menstrual cycle?
Ovulation - LH and FSH attain peak level and sharp fall in the secretion of progesterone
Proliferative - Rapid regeneration of myometrium and maturation of Graafian follicle
Development of corpus - luteum - Secretory phase and increased secretion of progesterone
Development of corpus - luteum - Secretory phase and increased secretion of progesterone
