Question

Growth and maturation of Graafian follicle is controlled by

• A. FSH - LH
• B. FSH - LTH
• C. GH - ADH
• D. ACTH - LH

Answer 1

The correct option is A FSH - LH

FSH is secreted by anterior pituitary gland. It stimulates growth, development and hormonal secretion of Graafian follicle and ovum maturation. LH is also secreted by the anterior pituitary, which inhibits secretion of FSH, stimulate maturation and rupture of Graafian follicle and release of the ovum. This makes option A correct.

LTH (luteotropic hormone/prolactin) is secreted by anterior pituitary gland and targets mammary gland to stimulate breast development and milk production after baby birth; this makes option B incorrect. Vasopressin/antidiuretic hormone (ADH) is secreted by posterior pituitary gland and targets nephrons to increase water reabsorption and thereby decreasing water content in urine.

Growth hormone is released by the anterior lobe of the pituitary gland and promotes the growth of the organism. This makes option C incorrect.

Adrenocorticotropic hormone (ACTH) is secreted by the anterior pituitary gland and targets adrenal cortex to produce its hormones, which are namely mineralocorticoids and the glucocorticoids. So, the correct answer is option A.