middle scalene muscle


n.

A muscle with origin from the costotransverse lamellae of the transverse processes of the second to the sixth cervical vertebrae, with insertion into the first rib posterior to the subclavian artery, with nerve supply from the cervical plexus, and whose action raises the first rib.

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Question 1 of 10
earnest
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.