Head and Neck Flashcards
Levator scapulae (deep to trapezius)
O: vertebrae
I: scapula
A: elevates scapula; abducts and rotates neck
Sternocleidomastoid
O: sternum and clavicle
I: mastoid process (temporal)
A: abducts, rotates, and flexes head
Platysma (not shown on the models)
O: fascia of deltoid and pectoralis major
I: mandible
A: depresses lower lip (as in pouting); depresses mandible
Frontalis
O: galea aponeurotica
I: skin below eyebrows
A: elevates eyebrows; protracts scalp
Occipitalis
O: occipital and temporal bones
I: galea aponeurotica
A: retracts scalp
Temporalis
O: temporal bone
I: mandible
A: elevates mandible
Masseter
O: zygomatic arch
I: mandible
A: elevates mandible
Orbicularis oculi
Sphincter-like’ muscle around mouth
A: closes and protrudes lips (as in puckering)
Other structures/concepts to know
Galea aponeurotica
