Which hormone stimulates oocyte maturation
A. GNRH
B. LH
C. LHRF
D. FSH
Explanation :-
The hormone that stimulates oocyte maturation is Luteinizing Hormone (LH).
Explanation
• LH (Luteinizing Hormone) surges in the middle of the menstrual cycle.
• This LH surge triggers the final maturation of the oocyte (egg) and leads to ovulation.
• It also causes the rupture of the Graafian follicle and formation of the corpus luteum.
Summary
Hormone Main Function
LH Stimulates oocyte maturation and causes ovulation
FSH Stimulates follicle growth and development
👉 Therefore, LH is responsible for oocyte maturation.
Other Options Details :-
Here is the description of all the options:
A. GnRH (Gonadotropin Releasing Hormone)
• GnRH is a hormone released from the hypothalamus.
• Its function is to stimulate the anterior pituitary gland to release two hormones: FSH and LH.
• It plays a key role in regulating the menstrual cycle, ovulation, and reproduction.
B. LH (Luteinizing Hormone)
• LH is secreted by the anterior pituitary gland.
• It is responsible for triggering ovulation (release of an egg from the ovary).
• In females, it also helps form and maintain the corpus luteum, which secretes progesterone.
• In males, LH stimulates Leydig cells in testes to produce testosterone.
C. LHRF (Luteinizing Hormone Releasing Factor)
• LHRF is another name for GnRH.
• It stimulates the pituitary gland to release LH (and also FSH).
• Used medically in fertility treatments and hormonal tests.
D. FSH (Follicle Stimulating Hormone)
• FSH is secreted by the anterior pituitary gland.
• In females, it stimulates the growth and maturation of ovarian follicles in the ovary.
• It also stimulates estrogen secretion.
• In males, it helps in spermatogenesis (production of sperm) by acting on Sertoli cells.
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Writer: Vandita Singh, Lucknow (GS India Nursing Group)