Question

During a menstrual cycle, a mid-cycle surge of triggers ovulation
A) Estrogen
B) Progesterone
C) LH
D) FSH

Answer 1

Hint:Ovulation is a physiologic cycle characterized by the rupture and release of the dominant follicle from the ovary into the fallopian tube where it can possibly become fertilized. The ovulation cycle is regulated by fluxing gonadotropic hormone (FSH/LH) levels.

Complete answer:
Ovulation is the third stage inside the larger Uterine Cycle (Menstrual cycle). The follicular release follows the Follicular phase (for example predominant follicle development) and goes before the Luteal phase (maintenance of corpus luteum) that advances to either endometrial shedding or implantation. Follicular release happens around 14 days before the period in a cyclic pattern if the hypothalamic-pituitary-ovarian axis function is very much regulated and directed.

All that occurs during the Follicular stage is arranged in the body for a spectacular arrangement of hormonal functions that lead to ovulation. Ovulation happens mid-cycle in response to a progression of hormonal changes that are set off by a peak in estrogen, happening any day from day 10 to 17 of the Follicular stage.

Hormone prepares the body for ovulation before the menstrual stage can start. The pituitary gland releases two hormones, FSH (Follicle Stimulating Hormone) and LH (Luteinizing Hormone). LH invigorates the follicle to make and release estrogen. At the point when the measure of estrogen created in your body reaches at a specific level, it makes the pituitary gland discharge a surge of LH. The LH surge is the thing that triggers the nearly or almost ripped egg to turn out to be completely developed and get through the follicle and this cycle is known as ovulation.

Therefore, the correct answer is option C, i.e. 'LH'.

Note:LH is a heterodimeric glycoprotein. Each monomeric unit is a glycoprotein atom; one alpha and one beta subunit make the full, utilitarian protein. Its structure is like that of the other glycoprotein hormones, follicle-invigorating hormone (FSH), thyroid-animating hormone (TSH), and human chorionic gonadotropin (HCG).