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Human Reproduction · Question 97

AIPMT 2008MCQEasy📈 Topic in 50% papers+4−1
1

Which one of the following statements is incorrect about menstruation?

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

Answer

(3) The menstrual fluid can easily clot

Solution

As per NCERT, the first menstruation begins at puberty and is called menarche.

∵ At menopause the ovaries stop responding and ovarian hormones (oestrogen, progesterone) fall, the negative feedback is lost ⇒ the gonadotropins (FSH, LH) rise sharply.

Menstrual flow results from the breakdown of the endometrial lining and its blood vessels; normally about 40 ml of blood is lost.

∵ Menstrual fluid contains fibrinolysin (plasmin), the blood in it does not clot.

∴ The statement "The menstrual fluid can easily clot" is incorrect.

Answer: (3)

AIPMT 2008

Keep practising — Human Reproduction

2

Which extraembryonic membrane in humans prevents desiccation of the embryo inside the uterus?

  1. Yolk sac
  2. Amnion
  3. Chorion
  4. Allantois
AIPMT 2008
3

Which part of ovary in mammals acts as an endocrine gland after ovulation?

  1. Stroma
  2. Vitelline membrane
  3. Germinal epithelium
  4. Graafian follicle
AIPMT 2007
4

Sertoli cells are regulated by the pituitary hormone known as-

  1. LH
  2. FSH
  3. GH
  4. Prolactin
AIPMT 2006
5

Withdrawal of which of the following hormones is the immediate cause of menstruation?

  1. Progesterone
  2. FSH
  3. FSH-RH
  4. Estrogen
AIPMT 2006
6

Grey crescent is the area -

  1. Just opposite to the site of entry of sperm into ovum
  2. At the point of entry of sperm into ovum
  3. At the vegetal pole
  4. At the animal pole
AIPMT 2005
7

If mammalian ovum fails to get fertilized, which one of the following is unlikely?

  1. Corpus luteum will disintegrate
  2. Estrogen secretion further decreases
  3. Primary follicle starts developing
  4. Progesterone secretion rapidly declines
AIPMT 2005
8

Ovulation in the human female normally takes place during the menstrual cycle

  1. At the beginning of the proliferative phase
  2. At the mid secretory phase
  3. Just before the end of the secretory cycle
  4. At the end of the proliferative phase
AIPMT 2004
9

Which of the following hormones is not a secretion product of human placenta?

  1. Estrogen
  2. Progesterone
  3. Prolactin
  4. Human chorionic gonadotropin
AIPMT 2004
10

Bartholin's glands are situated

  1. on the sides of the head of some amphibians
  2. at the reduced tail end of birds
  3. on either side of vagina in humans
  4. on either side of vas deferens in humans.
AIPMT 2003
11

During embryonic development, the establishment of polarity along anterior/posterior, dorsal/ventral or medial/lateral axis is called:

  1. Organizer phenomena
  2. Pattern formation
  3. Axis formation
  4. Anamorphosis
AIPMT 2003

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