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Muscles of the Neck
Muscles of the neck
| Muscle Name | Attachments | Actions | Innervation | Group |
|---|---|---|---|---|
| platysma | skin over mandible, neck and clavicle | wrinkle the skin of the neck | Facial Nerve | superficial anterior/lateral |
| Trapezius | Proximal: Spinous Processes, Base of Skull Distal: Spine of Scapula, Acromian Process, Clavicle | Scapular Movements | Accessory Nerve | |
| Sternocleidomastiod | Proximal: Manubrium of Sternum and Clavicle Distal: Mastoid Process | 1) Unilateral: a) Rotation fo Head to opposite side, b) move ear towards shoulder 2) Flexion fo Neck | Accessory Nerve | |
| Longus Capitus | Vertebral Bodies and Transverse Processes | Head and Neck Flexion | Ventral Rami of Cervical Spinal Nerves | Anterior, Deep |
| Longus Coli | Vertebral Bodies and Transverse Processes | Head and Neck Flexion | Ventral Rami of Cervical Spinal Nerves | Anterior, Deep |
| Semispinalis | Vetebral spinous and transverse processes; Skull | Head and Neck Extension | Dorsal Rami of Cervical Spinal Nerves | Posterior, Deep |
| Splenius | Vetebral spinous and transverse processes; Skull | Head and Neck Extension | Dorsal Rami of Cervical Spinal Nerves | Posterior, Deep |
| Anterior, Posterior, Middle Scalenes | Transverse Processes, Ribs | Lateral Bending of Head and Neck | Vertral Rami of Cervical Spinal Nerves; | Lateral, Deep |
| Levator Scapulae | Transverse Processoses of c1-c4, Superior Part of Medial Border of Scapula | Lateral Bending of Head and Neck, Scapular Elevation | Dorsal Scalpular Nerve | Lateral, Deep |
| Stylohiod | Styloid Process; Hyoid | Elevate hyoid and Voice Box | Facial Nerve | Hyoid Muscles (Superior) |
| Posterior Belly of Digastric | Mastoid Process; Hyoid | Elevate hyoid and Voice Box | Facial Nerve | Hyoid Muscles (Superior) |
| Anterior Belly of Digastric | Hyoid; Mandible | Elevate hyoid and Voice Box | Nerve to Mylohyoid | Hyoid Muscles (Superior) |
| Mylohyoid | Mandible; Hyoid | Elevate hyoid and Voice Box | Nerve to Mylohyoid | Hyoid Muscles (Superior) |
| Geniohyoid | Mandible; Hyoid | Elevate hyoid and Voice Box | C1 Ventral Ramus | Hyoid Muscles (Superior) |
| Omohyoid | Scapula; Hyoid | Depress the hyoid | Ansa Cervicalis | Hyoid Muscles (infrahyoid) |
| Sternhyoid | Sternum, Hyoid | Depress the hyoid | Ansa Cervicalis | Hyoid Muscles (infrahyoid) |
| Sternothyroid | Sternum, Thyroid Cartilage | Depress the voicebox | Ansa Cervicalis | Infrahyoid |
| Thyrohyoid | Thyroid Cartilage, Hyoid | Depress the hyoid | C1 Ventral Ramus | Hyoid Muscles (infrahyoid) |
| masseter | (blank) | (blank) | (blank) | (blank) |
| temporalis | (blank) | (blank) | (blank) | (blank) |
| suboccipitals | (blank) | (blank) | (blank) | (blank) |
| trapezius | (blank) | (blank) | (blank) | (blank) |
| splenius cervicis | (blank) | (blank) | (blank) | (blank) |
| levator scapula | (blank) | (blank) | (blank) | (blank) |
| semispinalis capitis | (blank) | (blank) | (blank) | (blank) |
| sternocleidomastoid | (blank) | (blank) | (blank) | (blank) |
| scalenes | (blank) | (blank) | (blank) | (blank) |
| TEMPORAL | O: TEMPORAL FOSSA OF THE TEMPORAL BONE I: CORONOID PROCESS-ANTERIOR BORDER OF THE RAMUS | RAISES MANDIBLE-PROTRUSION AND RETRUSION | (blank) | (blank) |
| MASSETER MUSCLE | O: ZYGOMATIC ARCH I:RAMUS OF THE MANDIBLE-CORONOID PROCESS OF THE MANDIBLE-ANGLE OF THE MANDIBLE | RAISES MANDIBLE-SIDE TO SIDE MOVEMENT | (blank) | (blank) |
| MEDIAL (INTERNAL) PTERIGOID | LPP OSB=PALANTINE BONE-MAXILLARY TUBEROSITY INNER SURFACE OF THE RAMUS ANGLE | WORKS WITH MASSETER | (blank) | (blank) |
| LATERAL (EXTERNAL) PTERIGOID | GREATER WING OF THE SPHENOID BONE LATERAL SURFACE OF THE PTERYGOID PLATE I: NECK OF THE CONDOYLE-ARTICULAR DISC AND CAPSULAR LIGAMENT OF TMJ | DEPRESSES MANDIBLE PROTRUSION AND RETRUSION | (blank) | (blank) |
| SPHENOMANDIBULAS | (blank) | (blank) | (blank) | (blank) |
| ORBICULARIS ORIS | FIBERS OF OTHER MUSCLES IN AREA I | (blank) | (blank) | (blank) |