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Embryology Test Practice Questions
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Embryology Test Practice Questions
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25 Questions

1. What are the three layers of each pharyngeal arch?

2. extensions of the pharynx between the pharyngeal arches?

3. The lens placode invaginats to form what?

4. What does the frontonasal prominence divide into?

5. forms the filtrum of the upper lip and middle of the nose (by extending towards the midline and fusing with the maxillary prominence.

6. What forms the cranial base and part of the cranial vault, voluntary muscles of the craniofacial region, dermis, connective tissues, and meninges that are caudal to the prosencephalon.

7. The brain develops cranial to the ________pair of somites.

8. What are characteristics of first trimester?

9. When does the primordium of ossicles appear?

10. What does a failure of the fusion of facial processes cause?

11. The muscles of mastication, mylohyoid, anterior belly of digastric, tensor tympani, tensor palatini are all derivatives of which pharyngeal arch?

12. This zone contains supporting cells and will become white matter.

13. 'What is a series of rapid mitotic divisions of early embryonic development known as? Does it result in growth of cytoplasm?"

14. Where do the two distal tongue buds (lateral lingual swellings) form?

15. Where does the second signal come from?

16. What is one cause of facial clefts?

17. As the optic stalk lengthens the end evaginates for form what?

18. During inner ear development, what does the placode do?

19. When is the spiral organ (organ of corti) present

20. What are the 2 parts of the inner ear?

21. What are the tissues, organs derived from the endoderm?

22. What forms the statoacoustic ganglion?

23. What may a cleft lip involve?

24. innervates the anterior 2/3 of the tongue.

25. What develops from folds of the surface ectoderm in front of the developoing cornea?

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