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Stack #129201

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Muscle
Origin
Insertion
Action
Sternoclamastoid   Sternal head: Top of the manibrum Clavicular head: medial 1/3 clavical   mastoid process and the later portion of the superior nuchal line of the occiput   Unilaterally: Laterally flex anad rotate head and neck to the same and opposite side Bilaterally: flex head and neck assist in inhalation  
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Anterior Scalene   Transverse processes of the 3-6 cervical vertebrae   First rib   Unilaterally: laterally flex head and neck to same side. rotate head and neck to opposite side. Bilaterally: Elevate the ribs during inhalation. flex head and neck  
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Middle Scalene   Transverse processes of 2-7 cervical vertebrae   First rib   Unilaterally: laterally flex head and neck to same side. rotate head and neck to opposite side. Bilaterally: Elevate the ribs during inhalation  
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Posterior Scalene   Transverse processes of the 5-6 cervical vertebrae   Second rib   Unilaterally: laterally flex head and neck to same side when ribs are fixed. Rotate head and neck to opposite side. Bilaterally: Elevate the ribs during inhalation  
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Masseter   Zygomatic Arch   Angle and Ramus of mandible   Elevate mandible  
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Temporalis   Temporal fossa and fascia   Coronoid processes of the mandible   elevate the mandible. retract mandible  
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Platysma   Fascia covering superior part of the pectoralis major   base of mandible, skin of lower part of the face   assist in depression of the mandible. tighten the fascia of the neck  
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Occipitofrontalis   Galea Aponeurotica   Frontalis: skin over the eyebrows. Occiptials: superoir nuchal line of the occiput   Frontalis: raise eyebrows and wrinke forhead. Occiptalalis: anchor and retract galea posteriorly  
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Medial pterygoid   medial surface of the ptyergoid plate of the sheniod bone and tuberosity of the maxilla   medial surface of the ramus of the mandible   laterally deviate the mandible to the opposite. elevate mandbile. protract the mandible  
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Lateral pterygoid   Superior head: infratemporal surface of the greater crest of the sphenoid bone. Inferior head: lateral surface of the pterygoid plate of the sphenoid bone.   articular disc and capsule or the temporomandibular joint, neck of mandible   laterally deviate mandible to oppostie side. protract mandible  
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Created by: Tara_Marie