Block 7 Dr Yin Repro Embryo

14 Questions | By Chachelly | Last updated: Mar 18, 2022 | Total Attempts: 420

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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.

The cells in the area marked by the asterix secrete what ?
- 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