Platysma muscle
Updates to Article Attributes
Body
was changed:
Platysma is a broad superficial muscular sheet covering the superior anterior thoracic, anterior and anterolateral neck and anterolateral mandibular region. It consists of three parts, pars mandibularis, pars labialis and pars modiolaris.
- Origin: the fascia of pectoralis major and deltoid
- Insertion: lower border of the mandible, the lower lip, and subcutaneous tissue of the lower face
Actions
- Tense the skin between the jaw and lateral neck
- Assist in lowering the mandible
Blood supply
- Submental branch of the facial artery
- Suprascapular artery
Innervation
- Cervical branch of the facial nerve
-<p><strong>Platysma</strong> is a broad superficial muscular sheet covering the superior anterior thoracic, anterior and anterolateral neck and anterolateral mandibular region. It consists of three parts, pars mandibularis, pars labialis and pars modiolaris.</p><p>Origin: the fascia of pectoralis major and deltoid</p><p>Insertion: lower border of the mandible, the lower lip, and subcutaneous tissue of the lower face</p><h4>Actions</h4><ul>- +<p><strong>Platysma</strong> is a broad superficial muscular sheet covering the superior anterior thoracic, anterior and anterolateral neck and anterolateral mandibular region. It consists of three parts, pars mandibularis, pars labialis and pars modiolaris.</p><ul>
- +<li>Origin: the fascia of pectoralis major and deltoid</li>
- +<li>Insertion: lower border of the mandible, the lower lip, and subcutaneous tissue of the lower face</li>
- +</ul><h4>Actions</h4><ul>
References changed:
- 1. Gray's Anatomy. Churchill Livingstone. (2011) ISBN:0443066841. <a href="http://books.google.com/books?vid=ISBN0443066841">Read it at Google Books</a> - <a href="http://www.amazon.com/gp/product/0443066841">Find it at Amazon</a><span class="ref_v3"></span>
Sections changed:
- Anatomy
Systems changed:
- Head & Neck
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