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n |
a.k.a.
visceral or branchial arches
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n |
Develop
(and disappear as distinctively visible
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structures)
in a rostro-caudal sequence
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n |
Require
neural crest cells for their development
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n |
Even
after they are no longer visible externally,
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they
have a lasting impact on the anatomy of the
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head
and neck and of the great vessels
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