Questions and Answers
Which germ layer does NOT form the head and neck of the developing embryo?
Endoderm
The trigeminal nerve (V) innervates which pharyngeal arch?
2
The pharyngeal arches start forming during which week of development?
2nd
Pharyngeal pouches arise from which germ layer?
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Which germ layer makes up the internal surface of the pharyngeal arches?
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Study Notes
Embryonic Development
- The ectoderm germ layer does not form the head and neck of the developing embryo.
Cranial Nerve Function
- The trigeminal nerve (V) is responsible for innervating the first pharyngeal arch.
Pharyngeal Arch Development
- Pharyngeal arches begin to form during the fourth week of development.
Pharyngeal Pouches
- Pharyngeal pouches arise from the endoderm germ layer.
Pharyngeal Arch Composition
- The endoderm germ layer makes up the internal surface of the pharyngeal arches.
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