6 Stages of Follicle Growth in Reproduction
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Questions and Answers

During which stage of follicle growth does the primary oocyte grow in size?

  • Primordial follicle
  • Primary follicle (correct)
  • Graafian follicle
  • Secondary follicle
  • Which cell type is responsible for secreting estrogen and forming the antrum in the follicle growth stages?

  • Theca cells
  • Primordial cells
  • Corpus luteum cells
  • Granulosa cells (correct)
  • What event triggers ovulation in the menstrual cycle?

  • Oestradiol production
  • Progesterone secretion
  • Fluctuation in FSH levels
  • LH surge (correct)
  • Which phase of the ovarian cycle involves changes in the ovary leading up to ovulation?

    <p>Follicular phase</p> Signup and view all the answers

    Which hormone is primarily responsible for converting androgens into estrogen in the two-cell theory of estrogen production?

    <p>Follicle-Stimulating Hormone (FSH)</p> Signup and view all the answers

    What is the normal duration range of a typical menstrual cycle?

    <p>21-35 days</p> Signup and view all the answers

    What is responsible for the increase in oestrogen levels during the follicular phase of the ovarian cycle?

    <p>Antral follicles</p> Signup and view all the answers

    When does ovulation typically occur in a 28-day ovarian cycle?

    <p>Day 14</p> Signup and view all the answers

    What hormone is mainly responsible for the thickening of the endometrium during the proliferative phase of the uterine cycle?

    <p>Oestrogen</p> Signup and view all the answers

    What happens to the corpus luteum if fertilization does not occur?

    <p>It degenerates due to low levels of FSH and LH</p> Signup and view all the answers

    What is the main role of the positive feedback mechanism that leads to an LH surge during the ovarian cycle?

    <p>Trigger ovulation</p> Signup and view all the answers

    Which phase of the uterine cycle is characterized by the degeneration of the endometrium?

    <p>Menstrual phase</p> Signup and view all the answers

    What is the correct sequence of events during oogenesis?

    <p>Oogonia undergo mitosis, primary oocytes are formed, secondary oocyte is ovulated</p> Signup and view all the answers

    At what stage in a female's life do the ovaries become inactive and experience follicular atresia?

    <p>Puberty</p> Signup and view all the answers

    What is the role of sex hormones in the cyclical maturation of primary oocytes?

    <p>Inducing the first meiotic division</p> Signup and view all the answers

    What is the fate of a secondary oocyte if fertilization does not occur?

    <p>Undergoes apoptosis</p> Signup and view all the answers

    What happens to the secondary oocyte after fertilization?

    <p>Completes meiosis II to form an ovum and a second polar body</p> Signup and view all the answers

    During which stage of life does a female have a defined number of primary oocytes at birth?

    <p>Birth</p> Signup and view all the answers

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