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Questions and Answers
What is the name of the first pharyngeal arch?
What happens to the 5th pharyngeal arch?
What is the core tissue of each pharyngeal arch called?
What separates the pharyngeal arches from the inside?
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What are the outer coverings of each pharyngeal arch made of?
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Study Notes
Development of the Pharyngeal Apparatus
- Development of the head and neck begins at the 4th and 5th week of embryonic development.
- Pharyngeal apparatus originates as a small area between the brain and the pericardial bulges.
- Formation of the pharyngeal arches occurs at this stage, which appear as cylindrical bars.
- Pharyngeal arches are paired structures that grow on either side of the future head and neck.
- They grow caudally, pushing the developing heart down and elongating to form the neck of the embryo.
- Pharyngeal arches eventually fuse at the centerline, contributing to the formation of the head and neck of the developing embryo.
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Description
This quiz covers the development of the head and neck, focusing on the appearance of the pharyngeal arches during the 4th and 5th week of embryonic development.
