Block 7 Dr Yin Repro Embryo

14 Questions

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Block 7 Dr Yin Repro Embryo

Questions and Answers
  • 1. 
    If the excretory tubules from the nephrogenic cord regress completely after the second months of development, which of the following structures in the male will not form properly?
    • A. 

      Ductus deferens

    • B. 

      Seminiferous tubules

    • C. 

      Ductuli efferentes

    • D. 

      Rete testis

    • E. 

      Ductus epididymis

  • 2. 
    Prenatal ultrasound at 32 weeks gestation indicates atresia of the very caudal ends of the paramesonephric ducts. This will most likely result in which of the following conditions?
    • A. 

      Uterus didelphys

    • B. 

      Double vagina

    • C. 

      Uterus bicornis

    • D. 

      Atretic cervix

    • E. 

      Short and atretic vagina

  • 3. 
    A 15-year-old boy is found to have underdeveloped ductus epididymis and ductus deferens. Which of the following give rise to these structures?
    • A. 

      Primitive sex cords

    • B. 

      Paramesonephric ducts

    • C. 

      Epigenital tubules

    • D. 

      Paragenital tubules

    • E. 

      Mesonephric ducts

  • 4. 
    Sinus tubercle gives rise to the hymen in the female. What is the derivative of the sinus tubercle in the male?
    • A. 

      Prostatic utricle

    • B. 

      Appendix epididymis

    • C. 

      Paradidymis

    • D. 

      Seminal colliculus

    • E. 

      Membranous urethra

  • 5. 
    Prenatal ultrasound at 5 months gestation shows polyhydramnios. What can be a cause of this condition?
    • A. 

      PROM

    • B. 

      Preterm PROM

    • C. 

      Renal agenesis

    • D. 

      GI atresia

    • E. 

      Amniotic bands

  • 6. 
    Under normal conditions, which of the following structures in the primitive umbilical cords gives rise to the median umbilical ligament?
    • A. 

      Yolk sac

    • B. 

      Vitelline duct

    • C. 

      Allantois

    • D. 

      Umbilical arteries

    • E. 

      Umbilical vein

  • 7. 
    Which of the following is a component of the placenta?
    • A. 

      Decidua parietalis

    • B. 

      Decidua capsularis

    • C. 

      Chorion leave

    • D. 

      Chorion frondosum

    • E. 

      Amniochorionic membrane

  • 8. 
    Which of the following characterizes the changes in the endometrium in the luteal phase of the menstrual cycle?
    • A. 

      Ischemia and necrosis of the stratum functionale

    • B. 

      Influenced mainly by progesterone

    • C. 

      Thickening of the stratum basale

    • D. 

      Presence of straight tubular glands

    • E. 

      Necrosis and sloughing off of the endocervix

  • 9. 
    In the accompanying photomicrograph of the ovary, the structures indicated by the pointer produce which of the following hormones?
    • A. 

      Androstenedione

    • B. 

      Estrogen

    • C. 

      LH

    • D. 

      Progesterone

    • E. 

      HCG

  • 10. 
    The structures indicated by the pointer in the accompanying photomicrograph can be derived from which of the following structures? (Choose the one best answer)
    • A. 

      Primordial, primary follicles and secondary follicles

    • B. 

      Primordial, primary, secondary, Graafian follicles, corpus luteum

    • C. 

      Primordial, primary, secondary, and Graafian follicles

    • D. 

      Primordial, primary, secondary, Graafian follicles, corpus luteum, and corpus albicans

    • E. 

      Primordial, primary, secondary, Graafian follicles, corpus luteum, corpus albicans, and interstitial glands

  • 11. 
    Which area will contain specific proteins for the sperm to bind to?
    • A. 

      A

    • B. 

      B

    • C. 

      C

  • 12. 
    The structures indicated by the yellow B  in the accompanying photomicrograph are responsible for the production of _____?
    • A. 

      GnrH

    • B. 

      Progesterone

    • C. 

      Estrogen

    • D. 

      Testosterone

    • E. 

      HCG

    • F. 

      Red Bull

  • 13. 
    • A. 

      HCG

    • B. 

      Testoserone

    • C. 

      DHT

    • D. 

      Estrogen

    • E. 

      LH

    • F. 

      FSH

  • 14. 
    Red arrow
    • A. 

      Primary spermatocyte

    • B. 

      Secondary spermatocyte

    • C. 

      Spermatid

    • D. 

      Leydig cell

    • E. 

      Other