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Nat. Review chpt. 7

Muscles of the face and head

MuscleAttachment 1 (origin)Attachment 2 (insertion)Action 1Action 2Other actionsInnervation
Frontalis Epi Cranial Coronal Suture Skin over the eyebrow above the eye and nose Wrinkles forehead Raises eyebrow Facial Nerve (cn 7)
Orbicularis oculi Frontal bone Frontal bone Closes and squints eyes Temporal and Zygomatic branch of Facial Nerve (cn 7)
Obicularis oris fascia surrounding the mouth (encircles the mouth) Lips and fascia surrounding the mouth (same as attachment 1) Closes the mouth "kissing muscle" Protraction of the lips Mandibular branch of Facial Nerve (cn 7)
Buccinator Maxilla and mandible Orbicularis oris on corner of mouth Compression of the cheeks (against the teeth) blow bubbles Buccal branch of Facial Nerve (cn 7)
Zygomaticus muscles Zygomatic bone Tissue in the corners of the mouth Elevates the corners of the mouth ("smiling" muscle) Buccal branches of Facial Nerve (cn 7)
Levator labii superioris Maxilla and zygomatic bone Upper lip Elevates upper lip Buccal branches of Facial Nerve (cn 7)
Depressor labii inferioris Mandible Lower lip Depresses lower lip Buccal branches of Facial Nerve (cn 7)
Masseter Zygomatic arch Coronoid process of mandible Elevates mandible Protraction of the mandible Retraction of the mandible Trigeminal Nerve (cn 5)
Temporalis Temporal fossa Coronoid process and ramus of mandible Elevates mandible Retracts mandible Temporal and Trigeminal Nerve (cn 5)
Medial pterygoid Palatine bone and Sphenoid bone Mandible Elevates jaw Protracts jaw assist mandidble in chewing Trigeminal Nerve (cn 5)
Lateral pterygoid Sphenoid bone Mandible and temporomandibular joint Protracts jaw Moves jaw laterally (contralateral deviation of the mandible) Trigeminal Nerve (cn 5)
Occipitalis Occipital and temporal bones Galea aponeurotica anteriorly Draws scalp posteriorly Facial Nerve (cn 7)
Risorius Masseter muscle corners of the mouth retracts the angle of the mouth fish face muscle (blank) Buccal branch of facial nerve
Platysma Pectorlis major and Deltiod Mandible draws mouth downward, skin over clavicle up pout, show strain in neck (blank) Cervical branch of Facial Nerve
Corrugator superciliary arch frontal bone skin sbove the eyebell, super orbital margin move eyebrow up and down Dr. Sprak (blank) Temporal branch of facial nerve
Nasalis maxilla side of the nose bridge help open and close nasal (blank) (blank) Buccal branch of Facial Nerve
Created by: skpoem
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