Umme Aimen Tailor - Chapter 6.2: Myology

Frontalis

raises eyebrows, wrinkles forehead

Orbicularis oculi

closes the eyelids

Orbicularis oris

puckers the lps

Buccinator

compresses the cheek, as when blowing

Platysma

pulls lower lip and jaw downwards

Zygomaticus

smiling (raises corner of the mouth)

Superior Rectus

elevates eye

Inferior rectus

depresses eye

Medial Rectus

Rotates eye medially

Lateral Rectus

rotates eye laterally

Temporalis

elevates mandible, and closes the jaw

Masseter

synergist with the Temporalis, elevates mandible

Genioglossus

sticks tongue out (protracts)

Styloglossus

pull tongue back in (retracts)

What are the general characteristics of facial muscles?

they develop from the Branchial Arches, and are innervated by the Trigeminal Nerve (V)

What nerve innervates the facial muscles?

Trigeminal Nerve (V)

What is the action of the frontalis?

raising eyebrows and wrinkling forehead

What muscle closes the eyelids?

Orbicularis oculi

What muscle is responsible for squinting, winking, blinking?

Orbicularis oculi

What muscle puckers the lips?

Orbicularis oris

What muscle compresses the cheeks?

Buccinator

What muscle pulls the lower lip downward?

Platysma

What is Bell’s Palsy?

Unilateral paralysis of the facial nerve

How many muscles move the eye?

six total muscles control the eye

What muscles elevates the mandible?

Temporalis, masseter

What nerve innervates the tongue?

Hypoglossal Nerve (XI)