Liz Maas
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Liz Maas
Created by Liz Maas about 8 years ago
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General Embryology (CF1)

Question 1 of 9

1

Which of the following is correctly matched

Select one of the following:

  • Leptotene... condensation of chromosomes

  • Diplotene... pairing of homologous chromosomes

  • Pachytene... crossing over/meiotic recombination

  • Lepto and Pachy

  • All of them

Explanation

Question 2 of 9

1

Primordial germ cells migrate into the developing gonad at seven weeks. The primitive sex cords formed by the PGCs is also known as an indifferent gonad.

Select one of the following:

  • both true

  • first true, second false

  • first false, second true

  • both false

Explanation

Question 3 of 9

1

First meiotic division is complete in females during puberty but before puberty in males. Oocytes arrest at zygotene at birth, spermatogonia arrest in mitosis.

Select one of the following:

  • Both true

  • First true, second false

  • First false, second true

  • Both false

Explanation

Question 4 of 9

1

Which of the following is the correct order of fertilization events?

Select one of the following:

  • Capacitation, recognition, egg activation, fusion of sperm, fusion of genetic materials

  • egg activation, capacitation, recognition, fusion of genetic materials, acrosome reaction

  • capacitation of sperm, recognition, acrosome reaction, egg activation, sperm fusion

  • capacitation, recognition, acrosome reaction, sperm fusion, egg activation

  • none of these choices

Explanation

Question 5 of 9

1

Morulas undergo flattening in a process called compaction. Compaction includes increased tight junctions, adhesions, and inner/outer polarity of cells.

Select one of the following:

  • Both true

  • first true, second false

  • first false, second true

  • both false

Explanation

Question 6 of 9

1

The inner cell mass of the embryo can give rise to all 3 primary germ layers due to pluripotency and self-renewal. GATA6 and NANOG segregates the hypoblast from the epiblast.

Select one of the following:

  • Both true

  • First true, second false

  • First false, second true

  • Both false

Explanation

Question 7 of 9

1

Meiosis II of the oocyte occurs after the sperm has fused with the egg membrane. Fertilization normally occurs in the ampullary of the fallopian tube.

Select one of the following:

  • Both true

  • First true, second false

  • First false, second true

  • Both false

Explanation

Question 8 of 9

1

What is the correct order of the process of spermatids becoming sperm?

Select one of the following:

  • condensation of the nucleus, loss of cytoplasm, acrosome formation, middle and tail formation

  • condensation of the nucleus, formation of middle piece and tail, acrosome formation, loss of cytoplasm

  • acrosome formation, condensation of the nucleus, loss of cytoplasm, formation of middle and tail

  • acrosome formation, middle and tail formation, condensation of nucleus, loss of cytoplasm

  • loss of cytoplasm, acrosome formation, middle and tail formation, condensation of nucleus

Explanation

Question 9 of 9

1

What is the developmental pathway for primordial germ cells

Select one of the following:

  • epiblast, yolk sac, genital ridge, gut tube, dorsal mesentery, gonad

  • yolk sac, genital ridge, epiblast, dorsal mesentery, gut tube, gonad

  • epiblast, genital ridge, yolk sac, gut tube, dorsal mesentery, gonad

  • yolk sac, epiblast, genital ridge, dorsal mesentery, gut tube, gonad

  • epiblast, yolk sac, genital ridge, dorsal mesentery, gut tube, gonad

Explanation

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