primitive costal arch

primitive costal arch definition - medical

primitive costal arch

noun
Any of the arches formed from the costal processes or elements that give rise to the ribs in the thoracic region of the embryonic vertebral column.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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