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  • Question 1 - In a non-ovulating follicle, follicular growth is followed by: ...

    Incorrect

    • In a non-ovulating follicle, follicular growth is followed by:

      Your Answer: Regression

      Correct Answer: Atresia

      Explanation:

      During the ovulatory cycle, only one follicle will ovulate. The remaining non-ovulating follicles undergo disintegration. This process is known as atresia.

    • This question is part of the following fields:

      • Embryology
      52.7
      Seconds

  • Question 2 - Levels of which of the following hormones are increased in ovarian dysgenesis? ...

    Correct

    • Levels of which of the following hormones are increased in ovarian dysgenesis?

      Your Answer: Pituitary gonadotropins

      Explanation:

      There is marked elevation of FSH and LH in ovarian dysgenesis, produced by the pituitary.

    • This question is part of the following fields:

      • Embryology
      38.7
      Seconds

  • Question 3 - Regarding implantation, how many days after fertilisation does it typically occur? ...

    Incorrect

    • Regarding implantation, how many days after fertilisation does it typically occur?

      Your Answer: 5

      Correct Answer: 8

      Explanation:

      Fertilization usually occurs in the fallopian tubes after ovulation. The zygote moves through the fallopian tube and implants in the endometrium about 7-9 days after fertilisation, or 6-12 days after ovulation.

    • This question is part of the following fields:

      • Embryology
      19.2
      Seconds

  • Question 4 - The external carotid artery develops from which pharyngeal arch? ...

    Correct

    • The external carotid artery develops from which pharyngeal arch?

      Your Answer: 1st

      Explanation:

      The maxillary arteries and the external carotid arteries develop from the first pharyngeal arch. The stapedial arteries arise from the second, the common carotid artery and the internal carotid arteries from the third and the arch of the aorta and the right subclavian artery from the forth arch.

    • This question is part of the following fields:

      • Embryology
      8.1
      Seconds

  • Question 5 - At what age does meconium first appear in the fetal terminal ilium? ...

    Incorrect

    • At what age does meconium first appear in the fetal terminal ilium?

      Your Answer: 18-26 weeks gestation

      Correct Answer: 10-16 weeks gestation

      Explanation:

      Meconium first appears in the fetal ilium at 10-16 weeks.

    • This question is part of the following fields:

      • Embryology
      39.5
      Seconds

  • Question 6 - What is the innervation to the sigmoid colon? ...

    Incorrect

    • What is the innervation to the sigmoid colon?

      Your Answer: L1/L2

      Correct Answer: T12/L1

      Explanation:

      Sigmoid colon is part of the hindgut and the hindgut is innervated by the T12-L1 segment of the spinal nerves.

    • This question is part of the following fields:

      • Embryology
      62.7
      Seconds

  • Question 7 - The third pharyngeal arch gives rise to which of the following structures? ...

    Correct

    • The third pharyngeal arch gives rise to which of the following structures?

      Your Answer: Glossopharyngeal nerve

      Explanation:

      The 3rd arch gives rise to the Glossopharyngeal nerve.

    • This question is part of the following fields:

      • Embryology
      24.6
      Seconds

  • Question 8 - The second meiotic division of the oocyte is normally completed: ...

    Correct

    • The second meiotic division of the oocyte is normally completed:

      Your Answer: After the sperm penetrates the secondary oocyte

      Explanation:

      Upon penetration, if all is normally occurring, the process of egg-activation occurs, and the oocyte is said to have become activated. This is thought to be induced by a specific protein phospholipase c zeta. It undergoes its secondary meiotic division, and the two haploid nuclei (paternal and maternal) fuse to form a zygote.

    • This question is part of the following fields:

      • Embryology
      19.7
      Seconds

  • Question 9 - When does Oocytogenesis complete? ...

    Correct

    • When does Oocytogenesis complete?

      Your Answer: Birth

      Explanation:

      During the early fetal life, oogonia proliferate by mitosis. They enlarge to form primary oocyte before birth. No primary oocyte is form after birth. The primary oocyte is dormant is the ovarian follicles until puberty. As the follicle matures, the primary oocyte completes its first meiotic division and gives rise to secondary oocyte. During ovulation the secondary oocytes starts the second meiotic division but is only completed if a sperm penetrates it. This 1st and 2nd meiotic division is known as ootidogenesis.

    • This question is part of the following fields:

      • Embryology
      23.4
      Seconds

SESSION STATS - PERFORMANCE PER SPECIALTY

Embryology (5/9) 56%
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