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