Changes during Menstrual Cycle

Q. Which one of the following statements is incorrect about menstrual cycle?

1. The first menstruation begins at puberty and is called menarche
2. Lack of menstruation may also occur due to some environmental factors like stress and poor health
3. Corpus luteum secretes large amounts of progesterone which is essential for maintenance of endometrium
4. In absence of fertilisation, corpus luteum degenerates in luteal phase and new follicles start developing immediately

Q.

Name the four phases of menstrual cycle.

Q. Which one of the following statements is incorrect about menstruation?

1. At menopause in the female, there is especially abrupt increase in gonadotropic hormones
2. The beginning of the cycle of menstruation is called menarche
3. During normal menstruation about 40 ml blood is lost
4. The menstrual fluid can easily clot

Q.

Follicular phase of menstrual cycle is the other name of

1. Proliferative phase

2. Secretory phase

3. Luteal phase

4. Menstruation

Q. Some important events in the human female reproductive cycle are given below.
Arrange the events in proper sequence.
I. Secretion of FSH
II. Growth of corpus luteum
III. Growth of the follicle
IV. Ovulation
V. Sudden increase in the levels of LH

1. III - I - IV - II - V
2. I - III - V - IV - II
3. I - IV - III - V - II
4. II - I - III - IV - V

Q. Which one of the following statements is incorrect about menstruation?

1. At menopause in the female, there is especially abrupt increase in gonadotropic hormones
2. The beginning of the cycle of menstruation is called menarche
3. During normal menstruation about 40 ml blood is lost
4. The menstrual fluid can easily clot

Q.

With respect to the assertion and reason given, choose the correct answer.

Assertion [A]: During secretory phase, low levels of progesterone inhibit the production of FSH.
Reason [R]: As long as progesterone levels are low, the endometrium is maintained and no new follicles are stimulated.

1. [A] is true and [R] is false

2. Both [A] and [R] are false

3. Both [A] and [R] are true, and [R] is a correct explanation to [A]

4. [A] and [R] are true, but [R] is not a correct explanation to [A]

Q. Read the following statements about
menstrual cycle and select the correct
statements.
(i) Lack of menstruation may be indicative of pregnancy.
(ii) The changes in the ovary and the uterus
are induced by changes in the levels of
ovarian hormones only.
(iii) LH surge induces ovulation.
(iv) If fertilization occurs, corpus luteum
degenerates immediately.

1. (i) and (ii)
2. (ii) and (iii)
3. (i) and (iii)
4. (ii) and (iv)

Q. Which of the following is the most likely reason for the absence of a menstrual period after a regular menstrual cycle?

1. Maintenance of the hypertrophic endometrial lining
2. Fertilization of ovum
3. Maintenance of high concentration of sex hormones in the blood stream
4. Retention of well-developed corpus luteum