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6 Cards in this Set
- Front
- Back
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Obicularis Oris
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Origin: Muscle fibers surrounding the opening of the mouth
Insertion: Skin at the corner of the mouth Action: Closes and protrudes lips, as in kissing; compresses lips against teeth and shapes lips during speech |
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Platymsa
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Origin: Fascia over deltoid and pectoralis major muscles
Insertion: Mandible, muscle around angle of mouth and skin of lower face Action: Draws outer part of lower lip inferiorly and posteriorly, as in pouting; depresses mandible |
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Orbicularis Oculi
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Origin: Medial Wall of Orbit
Insertion: Circular Path around the eye Action: Closes Eye |
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Occipitofrontalis: Frontal Belly
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Origin: Epicranial aponeurosis
Insertion: Skin superior to supraorbital margin Origin: Draws scalp anteriorly, raises eyebrows, and wrinkles skin of forehead in surprise |
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Occipitofrontalis: Occipital Belly
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Origin: Occipital bone and mastoid process of temporal bone
Insertion: Epicranial aponeurosis Action: Draws scalp posteriorly |
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Buccinator
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Origin: Alveolar processes of maxilla and mandible and the pterygomandibular raphe (fibrous band extending from the pterygoid process to the sphenoid bone to the mandible
Insertion: Orbicularis Oris Action: Presses cheeks against teeth and lips, as in whistling, blowing, and sucking; draws corner of mouth laterally; and assists in mastication (chewing) by keeping food between the teeth (and not between the teeth and cheeks |
