Superficial Face Lab
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| Occipitofrontalis M. (front belly) | show 🗑
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| Orbicularis Oculi M. (has Orbital and Palpebral parts) | show 🗑
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| show | Goes from infra-orbital margin to superior lip.
Innvervation: CN XII, Buccal Branch.
Action: Elevate/retract and evert upper lip (showing sadness).
**Dilates mouth
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| show | From lateral zygomatic bone to angle of lip.
Innervation: CN XII, Buccal Branch.
Action: elevates labial commissure (Bilaterally: smile)(Unilaterally: sneer)
**Dilates mouth
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| show | From Mandible to Angle of mouth.
Innervation: CNXII, Buccal Branch.
Action: Presses check against molar teeth, resists distention (when blowing)
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| show | From Anterior zygomatic bone to skin of upper lip.
Innervation: CN XII, Buccal Branch.
Action: Retract/elevate and evert upper lip (sadness). **Same as Levator Labii superioris
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| Levator Anguli Oris M. | show 🗑
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| Orbicularis Oris M. | show 🗑
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| show | From Anterolateral base of mandible to angle of mouth.
Innervation: CN XII, Marginal Mandibular Branch.
Action: Depress labial commissure bilaterally to frown
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| show | From Platysma/Anterolateral mandible to Skin of lower lip.
Innervation: CN XII, Marginal Manibular Branch.
Action: Retracts/depresses and everts lower lip (pouting, sadness).
**Dilator of mouth
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| Temporalis M. | show 🗑
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| Masseter M. | show 🗑
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| Medial pterygoid M. | show 🗑
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| show | Origin: 1.lateral pterygoid plate, 2.infratemporal surface
Insertion: TMJ, mandibular condyle.
Innervation: CN V3 (lateral pterygoid N).
Action: Protracts mandible/depresses chin
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| show | 1.Transverse Ligament of the Atlas.
2.Superior Longitudinal Band.
3.Inferior Longitudinal Band
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| show | Extend from the sides of the Dens to the lateral margins of the Foramen Magnum. **Prevent excessive rotation
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| Transverse ligament of the Atlas | show 🗑
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| Tectorial Memembrane | show 🗑
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| show | Originates on lateral surface of the pons of the midbrain. Has both motor and sensory roots. It is the sensory N of the face and motor nerve of mastication and several small muscles.
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| show | Origin: Body of mandible.
Insertion: skin of chin.
Innervation: CN VII Mandibular branch.
Action: Elevates and protrudes lower lip (showing doubt).
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| Supraorbital N (Opthalmic division of trigeminal N) | show 🗑
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| Infraorbital N (Maxillary division of trigeminal N) | show 🗑
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| show | Originates in the infratemporal fossa, moving superior to parotid and ascending poserior to TMJ. Innervates the auricle, anterior ear, and skin of 2/3 of temporal region.
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| show | The terminal nerve of the inferior alveolar N. Exits from the Mandible through the mental foramen. Innervates the skin and mucosa of the chin and lower lip.
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| Temporal Branch of Facial N | show 🗑
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| Zygomatic Branch of Facial N | show 🗑
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| show | Emerges anteriorly from the parotid gland over the maxilla. It passes external to buccinator medially across maxilla. Innervates: buccinator, levator labi superioris, superior fibers of orbicularis oris,Zygomaticus major & minor, levator anguli oris.
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| Mandibular Branch of the Facial N | show 🗑
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| Cervical Branch of the Facial N | show 🗑
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| show | fascia covering the vertebrae and the associated muscles (Longus capitus/colli)
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| Retropharyngeal space | show 🗑
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| Parotid Duct | show 🗑
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| Retromandibular V. | show 🗑
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| show | Any infection of the superficial face can spread readily if it is able to enter the space deep to the facial muscles.
**Also means that fluid like lymph can be easily moved
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| show | Forceful flexion and extension of the neck region places extraordinary stress on the dens. A fracture only produces symptoms if the dens moves posteriorly which may impenge the spinal cord.
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| show | 1.Levator Labii superioris.
2.Levator anguli oris
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| show | 1.Buccinator.
2.Orbicularis Oris.
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Created by:
WeeG
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