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MSC Facial Muscles

MSC 241 - Facial Muscles

QuestionAnswer
Buccinator Muscle Compresses the cheek, retracts angle of mouth, draws corner of mouth laterally. Assists in mastication. Trumpeter
Corrugator Muscle Draws the eyebrows inferiorly and medially. Wrinkles skin of forehead. Frowning
Depressor Angulus Oris/Triangularis Muscle Depresses angle of mouth. Draws angle of mouth laterally & inferiorly. Open mouth
Depressor Labii Inferioris/Quadratus Muscle Draws inferior lip inferiorly and slightly laterally
Diagastricus Muscle Draws hyoid bone anteriorly & posteriorly. Elevates hyoid bone and depresses mandible, Open mouth
Levator Anguli Oris Elevates angle of mouth. Draws angle of mouth laterally & superiorly.
Levator Labii Superioris Alaeque Nasi Muscle Elevates the superior lip, dilates the nostrils.
Levator Labii Superioris Muscle Elevates and extends superior lip
Levator Palpebrae Superioris Muscle Raises the superior eyelid. Open eye
Masseter Muscle Closes mandible; mastication. Close mouth
Mentalis Muscle Elevates and protrudes the inferior lip, wrinkles the skin over the chin. Pouting
Occipitofrontalis Muscle Epicranius; draws the scalp posteriorly and anteriorly and raises the eyebrows. Surprise
Orbicularis Oculi Muscle Closes the eyelid; compresses the lacrimal sac. Crying
Orbicularis Oris Muscle Closes & protudes the lips. Kissing
Platysma Muscle Wrinkles the skin of the neck and chest, depresses the mandible and inferior lip. Pouting
Procerus Muscle Draws the skin of the forehead inferiorly. Concentrating
Quadratus Labii Superioris Muscle Raises the wings of the nose, deepens the nasolabial sulcus.
Risorius Muscle Draws the angle of the mouth anteriorly & laterally. Grimacing
Sternocleidomastoid/SCM Muscle Rotates and depresses the head. Nodding
Temporalis Muscle Closes the mandible; mastication and is the strongest chewing muscle.
Zygomaticus Major Muscle Draws the superior lip posteriorly, superiorily, and anteriorly. Smiling
Zygomaticus Minor Muscle Draws superior lip superiorly and anteriorly. Raises upper lip, exposes teeth. Dog growling
Created by: coqui5049
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