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internal intercostal muscle

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n.
Any of the muscles with their origin from the lower border of a rib, with insertion into the upper border of the rib below, with nerve supply from the intercostal nerve, and that contract during expiration and serve to maintain a tension in the intercostal spaces that resists mediolateral movement.
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Which of the following words means “to make a crackling sound; crackle”?
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

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