The major organizing center of the gastrulating embryo is the A. Inner cell mass B. Primitive streak C. Oropharyngeal membrane D. Primitive node E. Paraxial mesoderm The prechordal plate &/or the anterior visceral endoderm plays an important role in regionalization of the A. Notochord B. Embryonic mesoderm C. Forebrain D. Hindbrain E. Primitive node Which Pax is/are important for formation of midbrain? A. Paxl B. Pax3 C. Pax6 D. Pax2 + Pax5 E. Pax2 + Lim-1 or each question in this section, check all correct statements (½ point each line):
The major organizing center of the gastrulating embryo is the A. Inner cell mass B. Primitive streak C. Oropharyngeal membrane D. Primitive node E. Paraxial mesoderm The prechordal plate &/or the anterior visceral endoderm plays an important role in regionalization of the A. Notochord B. Embryonic mesoderm C. Forebrain D. Hindbrain E. Primitive node Which Pax is/are important for formation of midbrain? A. Paxl B. Pax3 C. Pax6 D. Pax2 + Pax5 E. Pax2 + Lim-1 or each question in this section, check all correct statements (½ point each line):
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Transcribed Image Text:### Embryology Quiz
#### Multiple Choice Questions
5. The major organizing center of the gastrulating embryo is the __________.
- A. Inner cell mass
- B. Primitive streak
- C. Oropharyngeal membrane
- D. Primitive node
- E. Paraxial mesoderm
6. The prechordal plate and/or the anterior visceral endoderm play an important role in regionalization of the __________.
- A. Notochord
- B. Embryonic mesoderm
- C. Forebrain
- D. Hindbrain
- E. Primitive node
7. Which Pax is/are important for formation of the midbrain?
- A. Pax1
- B. Pax3
- C. Pax6
- D. Pax2 + Pax5
- E. Pax2 + Lim-1
#### Check All That Apply
E. For each question in this section, check all correct statements (½ point each line):
1. In mouse embryos containing 8-16 cells, the cells with apical surfaces:
- _____ will adopt a trophectoderm fate (trophoblast)
- _____ will become cells of the inner cell mass
- _____ are polar cells
- _____ will express Cdx2
- _____ will express Oct4
- _____ will form the neural tube
2. Which of the following is/are mesenchymal:
- _____ Epidermal cell
- _____ Neural crest cell
- _____ Neural tube cell
- _____ Somite cell
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