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Match List I with List II:

List IList II
a. Modified secretory structures involved in lactationI. Mammary glands
b. Produces progesterone, estrogens, relaxin and inhibinII. Endometrium
c. Inner glandular layer of uterusIII. Isthmus
d. Last part of the oviductIV. Corpus luteum

Choose the correct answer from the options given below:

  • A.a-II, b-III, c-IV, d-I
  • B.a-I, b-II, c-III, d-IV
  • C.a-II, b-III, c-I, d-IV
  • D.a-I, b-IV, c-II, d-III

Answer: D

The correct match is a-I, b-IV, c-II, d-III.

  • Modified secretory structures involved in lactation are the mammary glands (I).
  • Progesterone, estrogens, relaxin and inhibin are produced by the corpus luteum, the structure that forms from the ovarian follicle after ovulation (IV).
  • The inner glandular layer of the uterus is the endometrium (II).
  • The oviduct runs from the infundibulum through the ampulla to the isthmus, which joins the uterus, so the isthmus is its last part (III).

The other options swap the corpus luteum with the endometrium or the isthmus, which is the common mistake: the endometrium is a lining that responds to these hormones, it does not make them.

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