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Published byMeagan Fox Modified over 9 years ago
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Categories Facial Muscles -unique because they are inserted into soft tissues such as skin or other muscles. -Allow us to smile, grin, kiss, frown. -
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Categories Chewing -Chewing Muscles break down food for the body to absorb. -All facial muscles (chewing and facial muscles) are paired with the exception of the platysma, frontails, orbicularis oris, and occipitals.
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Frontalis (Facial) -Runs from the cranial aponeurosis to the eyebrow skin. -Allows the raising of eyebrows for expression and forehead movement. Occipitalis The Occipitalis pulls the scalp back.
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Orbicularis Oculi (Facial) Fibers run in circles around the eyeball Allows you to blink, squint, and wink. Has many nerve receptors to assist with reaction time in blinking.
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Buccinator (Facial/ Chewing) Hybrid between Facial and Chewing muscle Facial because it pulls the cheek to flatten it, like your whistling. Chewing because it helps to hold food in place between teeth.
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Zygomaticus -goes from the cheek bone to the corner of the mouth. -it raises the corner of the mouth up words, as if smiling.
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CHEWING MUSCLES
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Masseter Runs between the mandible and the zygomatic processes. Elevates the mandible to close the jaw.
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Temporalis Fan-shaped muscle that overlaps the temporal bone. It is between the mandible and helps the masseter in closing the jaw.
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Neck Muscles
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Platysma Covers the anterior neck, as a single sheet. Runs from the chest to the bottom of the mouth It pulls the muscles downward to frown.
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Sternocleidomastoid (ster no-kil do-mastoid) Two headed muscle, one coming from the sterum and oen coming from the clavicle. Fuse into temporal bone These muscles are responsible for bowing and tilting the head.
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