Muscle gross Anatomy I - Muscles of the Head Movement of...

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Muscles of the Head 12/03/2008 10:06:00 Movement of the face Occipital-frontalis (epicranius) o Made of two muscles connected by Galea aponeurotica Occipitalis Draws scalp posteriorly Inserts on galea aponeurotica Frontalis Inserts near eyebrows Originates on galea aponeurotics Makes eyebrows go up Obrbicularis oculi o ‘ round ocular’ o Circular muscle Allows for blinking Orbicularis oris o ‘round oral’ o Circular muscle Makes puckering movement “Kissing muscle” Platysma o Sheet of muscle o Superficial On neck o Moves lip inferiorly
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‘Pouting muscle’ o Pulls mandible Zygomaticus major o Pulls corner of mouth superiorly ‘smiling muscle’ Muscles of the mandible Temporalis o Inserts on mandible o Originates on temporal bone o Retracts mandible Important in chewing and speech Masseter o Protracts mandible Important in chewing and speech
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This note was uploaded on 04/03/2008 for the course PSIO 201 taught by Professor Stanescu during the Spring '08 term at University of Arizona- Tucson.

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Muscle gross Anatomy I - Muscles of the Head Movement of...

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