Comprehension

The reproductive cycle of female primates is called the menstrual cycle. Menstrual cycle starts only after attaining sexual maturation (puberty). Generally, during ovu lation only one ovum is released per menstrual cycle. The cyclical changes in the ovary and the uterus during menstrual cycle are induced by changes in the levels of pituitary and ovarian hormones. After coitus, sperms are transported to the junction of the isthmus and ampulla, where the sperm fertilises the ovum leading to formation of a diploid zygote.

Question: 1

Which of the following does not constitute accessory duct of female reproductive system?

Updated On: Mar 26, 2025
  • Fallopian tubes
  • Uterus
  • Cervix
  • Vagina
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The Correct Option is B

Approach Solution - 1

Accessory ducts in the female reproductive system include the Fallopian tubes, cervix, and vagina, which help transport gametes and support fertilization. The uterus, however, serves as the site for embryo implantation and fetal development rather than acting as an accessory duct.
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Approach Solution -2

The accessory ducts in the female reproductive system include the fallopian tubes, cervix, and vagina. These ducts are responsible for the transport and fertilization of the ovum and the passage of sperm to the site of fertilization.

  • Fallopian tubes (1): These tubes are accessory ducts where fertilization occurs.
  • Cervix (3): The cervix is the lower part of the uterus, acting as an accessory duct for the passage of sperm into the uterus.
  • Vagina (4): The vagina serves as the passage for sperm to reach the uterus and also as the birth canal during delivery.

The uterus (2), however, is the organ where the fertilized egg implants and develops during pregnancy. It is not considered an accessory duct but is the main organ for gestation.

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Question: 2

The female external genitalia include:
(A) Mons pubis
(B) Hymen
(C) Mammary ducts
(D) Clitoris
(E) Cervix
Choose the correct answer from the options given below:

Updated On: Mar 26, 2025
  • (A), (C) and (D) only
  • (B), (D) and (E) only
  • (A), (B) and (D) only
  • (C), (D) and (E) only
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The Correct Option is C

Approach Solution - 1

The female external genitalia, collectively known as the vulva, include the mons pubis, hymen, clitoris, and labia. Mammary ducts are part of the mammary glands and are associated with lactation, not the external genitalia. The cervix is an internal structure connecting the uterus to the vagina.
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Approach Solution -2

The female external genitalia are the structures located outside the female body that are involved in sexual function.

  • (A) Mons pubis: The mons pubis is the fatty tissue located above the pubic bone, covered by pubic hair, and is considered part of the external genitalia.
  • (B) Hymen: The hymen is a membrane that partially covers the vaginal opening, often considered part of the external genitalia.
  • (C) Mammary ducts: The mammary ducts are part of the internal female reproductive system, as they are involved in milk production in the breasts, not considered external genitalia.
  • (D) Clitoris: The clitoris is part of the female external genitalia, involved in sexual pleasure.
  • (E) Cervix: The cervix is part of the internal reproductive system and connects the uterus to the vagina, not considered external genitalia.
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Question: 3

Select the organ of the female reproductive system where the sperm is not transported at the time of coitus:

Updated On: Mar 26, 2025
  • Cervix
  • Ovary
  • Uterus
  • Fallopian tube
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The Correct Option is B

Approach Solution - 1

During coitus, sperm is deposited in the vagina and travels through the cervix, uterus, and into the Fallopian tubes. The ovary is not directly involved in this pathway, as it is the site of egg release, not sperm transport.
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Approach Solution -2

During coitus (sexual intercourse), sperm is deposited into the vagina, where it travels through the cervix into the uterus and then into the Fallopian tubes, where fertilization can occur if an ovum (egg) is present.

  • The ovary is where eggs (ova) are produced and stored. However, the sperm does not get transported to the ovary during coitus. The ovary is not involved in sperm transportation; it is where the egg is released during ovulation.
  • Cervix, uterus, and Fallopian tube all play a role in sperm transport during coitus, while the ovary does not.
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Question: 4

Which of the following does not take place before ovulation in human females?

Updated On: Mar 26, 2025
  • The secretion of LH and FSH increases during the follicular phase.
  • The corpus luteum secretes large amounts of progesterone.
  • LH and FSH attain peak levels in the middle of the cycle.
  • Maximum secretion of LH induces rupture of the Graafian follicle.
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The Correct Option is B

Approach Solution - 1

Progesterone is primarily secreted by the corpus luteum after ovulation. During the follicular phase (before ovulation), estrogen is the predominant hormone, while LH and FSH levels peak just before ovulation to stimulate follicle rupture.
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Approach Solution -2

  • Before ovulation, the corpus luteum does not secrete progesterone. Instead, progesterone secretion begins after ovulation, following the formation of the corpus luteum from the ruptured Graafian follicle.
  • During the follicular phase (before ovulation), estrogen is the predominant hormone, and LH and FSH levels increase as they stimulate the final maturation of the follicle.
  • LH and FSH levels attain peak levels just before ovulation, leading to the rupture of the Graafian follicle, which releases the ovum.
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Question: 5

Match List-I with List-II:
List-I (Phase of menstrual cycle)List-II (Days of menstrual cycle)
(A) Proliferative phase(I) 14th day
(B) Menstrual phase(II) 15th–28th/29th days
(C) Secretory phase(III) 1st–5th days
(D) Ovulatory phase(IV) 5th–13th days
Choose the correct answer from the options given below:

Updated On: Mar 26, 2025
  • (A) - (II), (B) - (IV), (C) - (III), (D) - (I)
  • (A) - (III), (B) - (II), (C) - (I), (D) - (IV)
  • (A) - (IV), (B) - (III), (C) - (II), (D) - (I)
  • (A) - (II), (B) - (IV), (C) - (I), (D) - (III)
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The Correct Option is C

Approach Solution - 1

The correct matches are as follows: Proliferative phase (5th–13th days), Menstrual phase (1st–5th days), Secretory phase (15th–28th days), and Ovulatory phase (14th day). These phases correspond to different hormonal and structural changes in the menstrual cycle.
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Approach Solution -2

  • Proliferative phase (A) occurs from the 5th to 13th days of the menstrual cycle, during which the endometrial lining regenerates and thickens. This corresponds to (IV) in List-II.
  • Menstrual phase (B) happens during the 1st to 5th days, where the uterine lining sheds if pregnancy does not occur. This corresponds to (III) in List-II.
  • Secretory phase (C) occurs from the 15th to 28th or 29th days after ovulation, during which the endometrial lining becomes more glandular and prepares for implantation of a fertilized egg.This corresponds to (II) in List-II.
  • Ovulatory phase (D) happens around the 14th day of the menstrual cycle, when ovulation occurs, releasing an egg from the follicle. This corresponds to (I) in List-II.
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