12th Class Biology Human Reproduction Question Bank Case Based (MCQs) - Human Reproduction

  • question_answer
    Directions : (11 - 15)
    Read the passage given below and answer the following questions.
    The uterus is single, hollow and muscular. The shape of the uterus is like an inverted pear. It is supported by ligaments attached to the pelvic wall. Uterus is composed of four parts :
    i. Fundus : Upper dome shaped part of the uterus slightly above the openings of fallopian tubes.
    ii. Cornua (Sing. Cornu) : They are the upper corners where the oviducts enter the uterus.
    iii. Body or Corpus : It is the main part of the uterus.
    iv. Cervix : The uterus opens into vagina through a narrow cervix. The cavity of the cervix is called cervical canal which along with vagina forms the birth canal. The cervix communicates above with the body of uterus by an aperture called internal OS and with the vagina by an opening the external OS. The wall of the uterus has three layers of tissue. The external thin membranous perimetrium, the middle thick layer of smooth muscle, myometrium, and the inner glandular layer with blood vessels called endometrium that lines the uterine cavity. The endometrium undergoes cyclical changes during menstrual cycle while the myometrium exhibits strong contraction during delivery of the baby.
    Shape of the uterus in female human beings is

    A) Upright pear

    B) Inverted pear

    C) Upright almond

    D) Inverted almond

    Correct Answer: B

    Solution :

    Inverted pear


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