Muscles of Facial Expression

Flashcards summarizing key concepts regarding the muscles of facial expression, including origins, functions, and specific muscles.

Muscles of facial expression

Muscles important for eating and communication that originate on the surface of the skull.

Platysma

The only facial muscle that does not originate on the skull; it is located in the neck.

Epicranial aponeurosis

The collagenous sheet that connects the two bellies of the occipitofrontalis muscle.

Frontal belly of occipitofrontalis

The part of the occipitofrontalis muscle located at the front of the head.

Orbicularis oculi

A muscle that encircles the eye, allowing for movements such as blinking.

Zygomaticus major

A muscle that elevates the corners of the mouth, involved in smiling.

Orbicularis oris

The muscle encircling the mouth, used for various oral movements including whistling.

Buccinator

A muscle of the cheek that helps in chewing by keeping food between the teeth.

Levator labii superioris

A muscle that elevates the upper lip.

Depressor anguli oris

A muscle that depresses the corners of the mouth, contributing to frowning.