Question

Identify the mismatched pair from the following.

• A. Emergency hormone- Adrenal gland
• B. Birth Hormone- Pituitary gland
• C. Pregnancy hormone- Ovarian follicles
• D. Gonadotropins- Gonads

Answer 1

The correct option is D Gonadotropins- Gonads

a) Epinephrine and nor epinephrine are the secreted by adrenal medulla under emergency condition to prepare the body for flight or fight response and hence are known as emergency hormones.

b) During parturition, pressure of fetus’s head against the cervix and send signals to make hypothalamus to trigger the release of oxytocin from posterior pituitary. Oxytocin stimulates strong uterine muscle contraction forcing the fetus downwards and hence is also known as birth hormone.

c) Progesterone is secreted by corpus luteum (the ovulated follicle) during first three months of pregnancy and by placenta during next 6 months. It prepares the uterus for implantation, maintains the uterine endometrium during pregnancy and inhibits development of new follicle and menses for about 6 months by exerting negative feedback on secretion of gonadotropins. In absence of progesterone, disintegration of uterine endometrium can cause abortion/miscarriage and hence, it is regarded as pregnancy hormone.

d) Follicle stimulating hormone (FSH) and Luteinizing hormone are gonadotropins secreted by anterior pituitary. Since both LH and FSH act on gonads, they are known as gonadotropins. Gonads (testes and ovaries) serve as endocrine organs and secrete androgens and estrogen and progesterone respectively.