Muscles of the neck

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Muscle Name

Attachments

Actions

Innervation

Group

platysma

skin over mandible, neck and clavicle

wrinkle the skin of the neck

Facial Nerve

superficial anterior/lateral

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Trapezius

Proximal: Spinous Processes, Base of Skull Distal: Spine of Scapula, Acromian Process, Clavicle

Scapular Movements

Accessory Nerve

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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

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Longus Capitus

Vertebral Bodies and Transverse Processes

Head and Neck Flexion

Ventral Rami of Cervical Spinal Nerves

Anterior, Deep

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Longus Coli

Vertebral Bodies and Transverse Processes

Head and Neck Flexion

Ventral Rami of Cervical Spinal Nerves

Anterior, Deep

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Semispinalis

Vetebral spinous and transverse processes; Skull

Head and Neck Extension

Dorsal Rami of Cervical Spinal Nerves

Posterior, Deep

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Splenius

Vetebral spinous and transverse processes; Skull

Head and Neck Extension

Dorsal Rami of Cervical Spinal Nerves

Posterior, Deep

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Anterior, Posterior, Middle Scalenes

Transverse Processes, Ribs

Lateral Bending of Head and Neck

Vertral Rami of Cervical Spinal Nerves;

Lateral, Deep

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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

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Stylohiod

Styloid Process; Hyoid

Elevate hyoid and Voice Box

Facial Nerve

Hyoid Muscles (Superior)

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Posterior Belly of Digastric

Mastoid Process; Hyoid

Elevate hyoid and Voice Box

Facial Nerve

Hyoid Muscles (Superior)

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Anterior Belly of Digastric

Hyoid; Mandible

Elevate hyoid and Voice Box

Nerve to Mylohyoid

Hyoid Muscles (Superior)

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Mylohyoid

Mandible; Hyoid

Elevate hyoid and Voice Box

Nerve to Mylohyoid

Hyoid Muscles (Superior)

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Geniohyoid

Mandible; Hyoid

Elevate hyoid and Voice Box

C1 Ventral Ramus

Hyoid Muscles (Superior)

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Omohyoid

Scapula; Hyoid

Depress the hyoid

Ansa Cervicalis

Hyoid Muscles (infrahyoid)

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Sternhyoid

Sternum, Hyoid

Depress the hyoid

Ansa Cervicalis

Hyoid Muscles (infrahyoid)

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Sternothyroid

Sternum, Thyroid Cartilage

Depress the voicebox

Ansa Cervicalis

Infrahyoid

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Thyrohyoid

Thyroid Cartilage, Hyoid

Depress the hyoid

C1 Ventral Ramus

Hyoid Muscles (infrahyoid)

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masseter

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temporalis

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suboccipitals

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trapezius

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splenius cervicis

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levator scapula

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semispinalis capitis

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sternocleidomastoid

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scalenes

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TEMPORAL

O: TEMPORAL FOSSA OF THE TEMPORAL BONE I: CORONOID PROCESS-ANTERIOR BORDER OF THE RAMUS

RAISES MANDIBLE-PROTRUSION AND RETRUSION

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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

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MEDIAL (INTERNAL) PTERIGOID

LPP OSB=PALANTINE BONE-MAXILLARY TUBEROSITY INNER SURFACE OF THE RAMUS ANGLE

WORKS WITH MASSETER

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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

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SPHENOMANDIBULAS

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ORBICULARIS ORIS

FIBERS OF OTHER MUSCLES IN AREA I

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Created by: som2007