A) oxytocin
B) somatotrophins
C) luteotrophic
D) gonadotrophins
Correct Answer: D
Solution :
Trophe= nourishment. Most of the trophic hormones are secreted by anterior lobe of pituitary. Gonadotrophins or gonadotropic hormones are those which stimulates the gonads (Testis and ovaries). FSH (Follicle Stimulating Hormone) stimulates growth of ovarian follicles and their secretion of oestrogens in the female and spermatogenesis Ctormation of sperms) in the male. Lulenizing hormone (LH) stimulates corpus luteum of the ovary to secrete progesterone in the females. In male, it activates the Leydig's (intertial) cells of the tesris to secrete androgens. Somatotrophins or somatotropic hormone or growth hormone stimulates growth directly and in conjugation with other hormones the target cells of these hormones are various body cells which undergo growth. Luteotrophic hormones stimulates the corpus luteum of the ovary to secrete progesterone hormone. It is also called prolacrin hormone (PRL)or mammotrophin hormone (MTH) because its main physiological effect is to activate growth of breast during pregnancy and secretion of mammary glands after child birth. Oxytocin (OT; Pitocin) is secreted by posterior lobe of pituitary. It promotes contraction of the uterine muscles and myoepithelial cells of the lactating breast, ejecting the milk after child birth- Oxytocin is called birth hormone and milk ejecting hormone.
You need to login to perform this action.
You will be redirected in
3 sec
