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Neck Muscles

Muscles of the neck

Levator Scapulae Origin: C1-C4; Insertion: upper vertebral border of scapula
Sternocleidomastoid Origin: sternum, clavicle; Insertion: mastoid process of temporal; Action: abducts, rotates, and flexes head
Sternohyoid Origin: manubrium of sternum; Insertion: hyoid; Action: depresses hyoid
Sternothyroid Origin: manubrium of sternum; Insertion: thyroid cartilage of larynx; Action: depresses thyroid cartilage
Omohyoid Origin: superior surface of scapula; Insertion: hyoid; Action: depresses hyoid
Platysma Origin: fascia covering pectoralis major and deltoid; Insertion: mandible and skin of lower region of face; Action: depresses lower lip, opens jaw
Digastric Origin: inferior, distal margin of mandible (anterior belly), mastoid notch of temporal (posterior belly); Insertion: hyoid; Action: elevates, protracts, and retracts hyoid, opens mandible
Mylohyoid Origin: inner, inferior margin of mandible; Insertion: body of hyoid and median raphe; Action: elevates hyoid and tongue
Created by: koalas2013