Question

Write about menstrual cycle​

Answer 1

Answer:

Menstrual Cycle:-

(1) Menstruation occurs in human, apes and old world monkeys.

(2) Menstruation is bleeding from the uterus of adult females at intervals of one lunar month.

(3) Beginning of menstruation or first menstruation is called menarche.

(4) The beginning of menstruation varies. It usually occurs between 12 and 15 years.

(5) The cycle of events starting from one menstruation till the next one is called Menstrual Cycle.

(6) In human females, menstruation is repeated at an average interval of about 28/29 days.

(7) One ovum is released (ovulation) during the middle of each menstrual cycle.

(8) It is regulated by certain hormones, some of which are secreted by the pituitary gland.

(9) The pituitary gland is stimulated by releasing factors produced in the hypothalamus.

(10) The hormones produced by the pituitary gland influence the ovaries. The hormones secreted by the ovaries affect the walls of the uterus.

Answer 2

Answer:

The human female produces gametes(in the form of ova)that are discharged in monthly cycles. these cycles are called menstrual cycles.

• the function of the menstrual cycle is to prepare a favorable environment for the developing feotus if fertilization took place.
• a single egg(ovum) is normally produced and discharged from one of the two ovaries each month.this is called ovulation.
• ovulation is just one part of the menstrual cycle.the menstrual cycle lasts about 28 days,but varies from 25 to 35 days.
• the uterine lining thickens in preparation for pregnancy.if fertilization does not occur,the lining breaks down and is shed as a discharge through the vagina.this is called menstruation.
• the cycle starts on the first day of menstruation.

I hope this helps