Chapter 13, Problem 9CP

Summary Introduction

To review:

The nerve that, when injured, causes paralysis in the serratus anterior muscle.

Introduction:

The roots of the spinal nerves starting from the C5 to C8 and the nerve coming from the thoracic end unite to form the brachial plexus, which runs laterally and inferiorly on both sides of the last four and first cervical and thoracic vertebrae. The serratus anterior muscle is a muscle which carries the role for the protraction of the scapula that is, pulling of scapula forward and around the rib cage when someone throws a punch.