Human Musculature of the Head and Neck (Page 1)

Flashcards covering the key muscles of the head and neck, including their origins, insertions, and nerve supplies.

Occipitofrontalis

Origin: Superior nuchal line, Insertion: Galea aponeurotica, Nerve Supply: CNVII.

Temporalis

Origin: Temporal lines, Insertion: Coronoid process, Nerve Supply: CNV.

Orbicularis Oris

Origin: Muscle fibers around mouth, Insertion: Mucous membrane of lips, Nerve Supply: CNVII.

Buccinator

Origin: Lateral aspects of maxilla and mandible, Insertion: Orbicularis oris, Nerve Supply: CNVII.

Platysma

Origin: Fascia of deltoid and pectoralis major muscles, Insertion: Mandible, skin of lower face, muscles at corners of mouth, Nerve Supply: CNVII.

Masseter

Origin: Zygomatic arch, Insertion: Lateral aspect of Mandibular ramus and angle, Nerve Supply: CNV.

Sternocleidomastoid

Origin: Clavicle, manubrium, Insertion: Mastoid process, Nerve Supply: CNXI.

Trapezius

Origin: External occipital protuberance, nuchal ligament, spinous process of vertebrae C7-T12, Insertion: Clavicle, acromion, scapular spine, Nerve Supply: CNXI.

Superior Rectus

Eye muscle that elevates the eye.

Inferior Rectus

Eye muscle that depresses the eye.

Medial Rectus

Eye muscle that moves the eye medially.

Lateral Rectus

Eye muscle that moves the eye laterally.

Superior Oblique

Eye muscle that allows for downward and lateral movement.

Inferior Oblique

Eye muscle that allows for upward and lateral movement.