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Head Neck 1
From the dissector
| Structure | Comes From? | Goes to? | What does it do? | Innervation/Components | Artery (if applicable) |
|---|---|---|---|---|---|
| Zygomatic Branch of CN VII) | Stylomastoid Foramen | Part of Orbicularis Oris | Motor for eyelids Goes over Zygomatic Bone | GSA | NA |
| Marginal Mandibular Branch of CN VII | Stylomastoid Foramen | Depressor Anguli Oris, Depressor Labii Inferioris, Mentalis, | Motor for lower lip Goes with inferior border of mandible | GSA | NA |
| Cervical Branch | Stylomastoid Foramen | Platysma | Motor for neck?? Crosses angle of the mandible | GSA | NA |
| Frontalis | epicranial aponeurosis | skin of lower forehead and eyebrows | protracts elevates eyebrows | Temporal Branch of CN VII | Supraorbital A. Supratrochlear A. (from Internal Carotid) |
| Occipitalis | greater nuchal line | epicranial aponeurosis | retracts increases efficiency of frontalis | ? | Occipital A.(from External Carotid) |
| Corrugator Supercili | Superciliary Arch | Skin over superciliary arch and middle of supraorbital margin | draws eyebrows together | Temporal Branch of CN VII | ? |
| Procerus | Fascia over nasal bone + lateral nasalis cartilage | skin in between eyebrows | depresses medial end of eyebrows wrinkles nose | Buccal Branch of CN VII | Facial? |
| Transverse Part of Nasalis | Fascia over nasal bone + lateral nasalis cartilage | skin in between eyebrows | depresses medial end of eyebrows wrinkles nose | Buccal Branch of CN VII | Facial? |
| Alar Part of Nasalis | Frontal Process of Maxilla | Alar Cartilage | Flares nostrils | Buccal Branch of CN VII | Angular A.? |
| Levator Labii Superioris Alaeque Nasii | Frontal Process of MAxilla | Alar Cartilage | Flares Nostrils | Buccal Branch of CN VII | Angular A.? |
| Orbicularis Oris (Orbital, Lacrimal, Palpebral) | Medial orbital margin, Medial palpebral ligament, lacrimal bone | skin around margin of orbit, superior and inferior tarsal plates | Orbital: forceful closing of eye Lacrimal: draws eyelids medially (tear drainage) Palpebral: gentle closing of eye (blinking) | Zygomatic Branch of CN VII | Angular A.? |
| Levator Labii Superioris | Infraorbital Margin | skin of upper lip | Dilator everts/elevates upper lip deepens nasolabial sulcus | Buccal Branch of CN VII | Facial A. |
| Zygomaticus Minor | Anterior portion of Zygomatic Bone | skin of upper lip | Dilator everts/elevates upper lip; deepens nasolabial sulcus | Buccal Branch of CN VII | Facial A. |
| Zygomaticus Major | Lateral portion of Zygomatic Bone | Angle of mouth (modiolus) | Dilator elevates upper lip: bilateral = smile | Buccal Branch of CN VII | Facial A. |
| Levator Anguli Oris | Infraorbital Maxilla | Angle of mouth (modiolus) | Dilator elevates upper lip: bilateral = smile | Buccal Branch of CN VII | Facial A. |
| Depressor Anguli Oris | Anterolateral portion of Mandible | Angle of mouth (modiolus) | Dilator everts/depresses lower lip, | Marginal Mandibular Branch of CNVII | Facial A. |
| Risorious | Parotid Fascia and Buccal Skin | Angle of Mouth (Modiolus) | Dilator Widens rima | Buccal Branch of CN VII | Facial A. |
| Depressor Labii Inferioris | Anteriolateral portion of Mandible | Skin of lower lip | Dilator Depresses/everts lower lip | Marginal Mandibular Branch of CN VII | Facial A. |
| Mentalis | Body of Mandible | Skin of lower lip | Dilator Depresses/everts lower lip elevates skin of chin | Marginal Mandibular Branch of CN VII | Facial A. |
| Buccinator | Alveolar processes of maxilla and mandible Mandible Pterygomandibular Raphe (ext. of buccopharyngeal fascia) | Angle of mouth (modiolus) Orbicularis Oris | Keeps cheek taut against molar teeth | Buccal Branch of CN VII | Facial A. |
| Orbicularis Oris | Mandible Maxilla Angle of Mouth Deep Surface of Perioral Skin | Mucus Membrane of lips | sphincter of mouth compression/protrusion of lips | Buccal Branch of CN VII | Facial A. |
| Parotid Duct | Parotid Gland | Goes over masseter, into the buccinator, empties into oral cavity | saliva delivery | Lesser Petrosal (CN IX) GVE (parasymp) | NA |
| Temporal Branch of CN VII | Stylomastoid Foramen | Frontalis, Corrugator Supercilii, part of Orbicularis Oris | Motor for top of face Goes over Zygomatic Arch | GSA | NA |
| Buccal Branch of CN VII | Stylomastoid Foramen | Levator labii superioris, Zygomaticus Minor, Zygomaticus Major, Levator Anguli Oris, Procerus, Nasalis, Levator Labii Superiorus Alaeque Nasii, Orbicularis Oris, Buccinator, Risorious | Motor for sides of face Goes over masseter muscle | GSA | NA |
Created by:
s2d0789
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