Menstrual cycle is the cyclic changes in the reproductive tract of primate females. Given below are some statements related with menstrual cycle.
I. Oestrogen is the hormone active during proliferative phase.
II. The uterine endometrium and glands grow further during secretory phase.
III. At the end of proliferative phase, corpus luteum degenerates in the ovary.
IV. The cycle ends with the menstrual phase, when menstrual flow occurs and lasts for 3-5 days.
Choose the correct option.

I, II and III

II, III and IV

I and II

III and IV

Solution

I and II

Statement I and II are correct.

Menstrual cycle consists of three phases, namely, menstrual phase, proliferative phase/ follicular phase and secretory phase or luteal phase.

The cycle starts with the menstrual phase, when menstrual flow occurs and lasts for 3-5 days. Proliferative phase (5-14day) consists of growth of endometrium of uterus, Fallopian tube and vagina. At the end of secretory phase, corpus luteum degenerates in the ovary, progesterone secretion fails, the over grown uterine endometrium breaks down and menstruation takes place.

Some More Questions From Human Reproduction Chapter

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Human Reproduction

Some More Questions From Human Reproduction Chapter

Polar bodies are produced during the process :

In 28 days woman's menstrual cycle, ovulation occurs on :

Scrotum communicates with abdominal cavity through :

How many spermatozoa or sperms are present in human ejaculate ?

Acrosome is a part of:

Humans are :

Menstrual cycle occurs in :

Spermatozoa are produced in the .................. tubules of testes while ova are formed in the .................. of ovaries.

Corpus luteum secretes..................while Leydig cells secrete..................

The secretory phase of the menstrual cycle is also called the.................. phase because it is controlled by the hormone...................

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