The platysma muscle, which acts upon the mandible and the skin of the neck. Introduction: The platysma muscle is a superficial muscle, which overlaps the sternocleidomastoid and covers the upper part of the pectoralis major and deltoid. It spans clavicle and the side of the neck. The anterior part is thicker than the posterior part.

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Chapter 10.2, Problem 6AYLO

Summary Introduction

To discuss:

The platysma muscle, which acts upon the mandible and the skin of the neck.

Introduction:

The platysma muscle is a superficial muscle, which overlaps the sternocleidomastoid and covers the upper part of the pectoralis major and deltoid. It spans clavicle and the side of the neck. The anterior part is thicker than the posterior part.

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