Podcast
Questions and Answers
What is the opening of the gut tube at the cranial end of the embryo called?
What is the opening of the gut tube at the cranial end of the embryo called?
- Pharyngeal arches
- Cranial endoderm
- Neural tube
- Stomodeum (correct)
What is the origin of the mesenchyme within each pharyngeal arch?
What is the origin of the mesenchyme within each pharyngeal arch?
- Endodermal layer
- Neural crest cells (correct)
- Mesodermal germ layer
- Ectodermal layer
Which structure is lateral to the stomodeum and just above the cardiac bulge in the developing embryo?
Which structure is lateral to the stomodeum and just above the cardiac bulge in the developing embryo?
- Cranial nerve
- 6 pairs of well-defined outgrowths (Pharyngeal Arches) (correct)
- Mesenchyme
- Neural tube
What happens to the 5th pharyngeal arch in the developing embryo?
What happens to the 5th pharyngeal arch in the developing embryo?
What is seen within the cranial end of the developing embryo at week 3?
What is seen within the cranial end of the developing embryo at week 3?
Which germ layer contributes the most to the mesenchyme within each pharyngeal arch?
Which germ layer contributes the most to the mesenchyme within each pharyngeal arch?
What is the structure that separates the pharyngeal arches on the inside in the developing embryo?
What is the structure that separates the pharyngeal arches on the inside in the developing embryo?
Which cranial nerve is associated with each pharyngeal arch in the developing embryo?
Which cranial nerve is associated with each pharyngeal arch in the developing embryo?
At what week does the embryo develop the stomodeum, the opening of the gut tube at the cranial end?
At what week does the embryo develop the stomodeum, the opening of the gut tube at the cranial end?
What happens to the 5th pharyngeal arch in the developing embryo?
What happens to the 5th pharyngeal arch in the developing embryo?
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