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Muscles of the Head (Mastication (Masseter (Elevates, adducts, and…

- - - - Tranverse: compresses nares
      - Alar: opens nares
    - - Pulls eyebrows downward to produce transverse wrinkles over the nose
    - - Pulls the nose inferiorly, opening the nares
  - - - Depressor Anguli Oris
      - Depressor Labii Inferioris
      - Mentalis
    - - Risorius
      - Zygomaticus Major/Minor
      - Levator Labii Superioris
      - Levator Labii Superioris Alaeque Nasi
      - Levator Anguli Oris
  - - - Origin: Medial orbital margin, medial palpebral ligament, & lacrimal bone
        Insertion: skin around the margin of the orbit, & the superior & inferior tarsal plates.
    - - Origin: superciliary arch, running in a superolateral direction
        Insertion: skin of the eyebrow
        Action: draw the eyebrows together, creating vertical wrinkles on the bridge of the nose
        Innervation: Facial N. (CN VII)
- - - - Inferior fibres protrude the tongue, middle fibres depress the tongue, and superior fibres draw the tip back and down
    - - Depresses and retracts the tongue
    - - Retracts and elevates the tongue
    - - Elevates the posterior aspect of the tongue