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37 Cards in this Set
- Front
- Back
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• Orbicularis Oculi innervated by
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temporal and zygomatic branches of the facial nerve
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• Levator Labii Superioris Alaeque Nasi job is to
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o Raises upper lip and opens nostril
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• Nasalis is active during
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o Active during opening and closing of nares
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Nasalis transverse part job is to
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compress the nares
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Nasalis alar part job is to
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open the snares
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• Levator Labii Superioris' job
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o Elevates the upper lip. o Deepends furrow between the corner of the mouth during sadness
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• Zygomaticus Major and Minor
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o Draws angle of the mouth superiorly and posteriorly
o Helps make you smile |
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• Levator Anguli Oris is covered by
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two levator muscles and the zygomaticus
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• Orbicularis Oris is known as
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o Sphincter of the mouth and it Purses lips
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• Depressor Anguli Oris
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o Depresses the corner of the mouth
o Active during frowning |
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• Depressor Labii Inferioris job is to
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o Depresses lower lip, moves it laterally
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• Mentalis job
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o Position the lip when drinking and pouting
o Deepest muscle of muscles deepest lower group muscle |
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• Buccinator's job is to
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o Compress the cheek against the molar, keeps food on the occlusal surfaces during chewing
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o Anterior to the buccinator is the buccal fat pad which
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Gives cheeks their characteristics
Pierced by buccal branch of the facial nerve, buccal nerve (V3), parotid duct o Helps blow out air when cheeks are puffed out |
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• Masseter is the muscle of
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o Muscle of mastication
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• Temporalis is a muscle of
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mastication
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• Fascial Nerve job
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o Motor innervation for the face
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Fascial nerve exits through
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stylomastoid foramen
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o Branches of the facial under the parotid gland form
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the parotid plexus
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Acronynm for facial nerve
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Pete The Zebra Bit My Cheek
Posterior auricular nerve Temporal branches Zygomatic branches Buccal branches Mandibular branches Cervical branches |
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Temporal branches innervate
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muscles of the temple, forehead, and supra-orbital area
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Zygomatic branches innervate
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the muscles of the infra-orbital, lateral nasal, and upper lip area
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Buccal branches pierces and innervates
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the buccinator
• Supplies the muscles of the cheek, upper lip, and the corner of the mouth area |
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Mandibular branches innervate
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muscles of the lower lip and chin area
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Cervical branches innervate
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the platysma
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• Trigeminal nerve main job
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sensory innervation of the face
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Major branches of the trigeminal nerve
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Supraorbital nerve (V1)
Infraorbital nerve (v2) Mental nerve(V3) Auriculotemporal nerve(v3) |
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Most of the skin covering the face is innervated by
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branches of the trigeminal nerve, the exception is a small area covering the the angle and lower border of the ramus of the mandible and parts of the ear which are innervated by the cervical nerves
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o Bell’s palsy
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sudden loss of control of the muscles of facial expression on one side of the face. Presents with drooping of the mouth and inability to close the eyelid on affected side
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o Dental Anesthesia
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the infraorbital nerve may be infiltrated where it emerges from the infraorbital foramen. Need is inserted through the oral mucosa deep to the upper lip and directed superiorly.
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• Borders of the parotid bed
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o Posterior: mastoid process and posterior belly of the digastric muscle
o Anterior: medial pterygoid muscle, ramus of the mandible, and masseter muscle o Medial: styloid process and associated muscles (stylopharyngeus, styloglossus, stylohoid) o Posterosuperior: floor of the external acoustic meatus |
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The parotid duct pierces
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the buccinator muscle of the cheek, drains near the second upper molat tooth
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o Swelling of the parotid gland (as in mumps) pushes
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the ear love superiorly and laterally. During parotidectomy, the facial nerve is in danger of being injured. Paralysis can result.
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Facial artery runs deep to
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submandibular gland, below inferior mandible border
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o Facial artery becomes the angular artery when it reaches
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the lateral side of the nose
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• Retromandibular vein runs under
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the parotid gland
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Layers of the scalp
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o Skin
o Connective tissue: dense subcutaneous tissue containing the vessels and nerves of the scalp o Aponeurosis (epicranial aponeurosis): connecting the frontalis muscle to the occipitalis muscle o Loose connective tissue: permits the scalp to move over the calvaria o Pericranium: the periosteum of the cranial bones |
