4135408
| Question | Answer |
| Name the origin, insertion, innervation and action of the mentalis | Origin: Anterior surface of the body of the mandible Insertion: Skin of the chin Innervation: Marginal mandibular branch of the facial nerve Action: Elevate and protrude the lower lip |
| Name the origin, insertion, innervation and action of the depressor labii inferioris | Origin: Anterolateral surface of the body of the mandible Insertion: Skin of the lower lip Innervation: Marginal mandibular branch of the facial nerve Action: Depress the lower lips |
| Name the origin, insertion, innervation and action of the depressor anguli oris | Origin: Anterolateral surface of the base of the mandible Insertion: Modiolus of the mouth Innervation: Marginal mandibular branch of the facial nerve Action: Depress the angle of the mouth |
| Name the origin, insertion, innervation and action of the platysma | Origin: Subcutaneous tissue Insertion: Inferior border of the body of the mandible, Modiolus of the mouth, Skin of the lower lip Innervation: Cervical branch of the facial nerve |
| Name the origin, insertion, innervation and action of the risorius | Origin: Parotid fascia Insertion: Modiolus of the mouth Innervation: Buccal branch of the facial nerve Action: Retract the angle of the mouth |
| Name the origin, insertion, innervation and action of the zygomaticus major | Origin: Anterior surface of zygomatic bone Insertion: Modiolus of the mouth Innervation: Buccal branch of the facial nerve Action: Elevate the angle of the mouth laterally |
| Name the origin, insertion, innervation and action of the zygomaticus minor | Origin: Anterior surface of zygomatic bone Insertion: Skin of the upper lip Innervation: Buccal branch of the facial nerve Action: Elevates the upper lip |
| Name the origin, insertion, innervation and action of the levator labii superioris | Origin: Infraorbital margin of the maxilla Insertion: Skin of the upper lip Innervation: Buccal branch of the facial nerve Action: Elevates the upper lip |
| Name the origin, insertion, innervation and action of the levator labii superioris alaeque nasi | Origin: Frontal process of the maxilla Insertion: Skin of the upper lip and alar carilage Innervation: Buccal branch of the facial nerve Action: Elevate the upper lip and wing of the nose |
| Name the origin, insertion, innervation and action of the procerus | Origin: Fascia aponeurosis covering the nasal bone Insertion: Skin of the inferior forehead Innervation: Buccal branch of the facial nerve Action: Depression of medial end of eyebrows |
| Name the origin, insertion, innervation and action of the corrugator supercilii | Origin: Supraorbital ridges of the frontal bone Insertion: Skin of the forehead Innervation: Temporal branch of the facial nerve Acion: Depress the eyebrows medially and inferiorly |
| Name the origin, insertion, innervation and action of the occipital belly of occipitofrontalis | Origin: Superior nuchal line of the occipital bone Insertion: Epicranial aponeurosis Innervation: Posterior auricular branch of the facial nerve Action: Aids frontal belly with retraction of the scalp |
| Name the origin, insertion, innervation and action of the frontal belly of occipitofrontalis | Origin: Epicranial aponeurosis Insertion: Orbicularis oris Innervation: Temporal branch of the facial nerve Action: Raise the eyebrows |
| Name the origin, insertion, innervation and action of the buccinator | Origin: Alveolar processes of the mandible and maxilla Insertion: Modiolus of the mouth Innervation: Buccal branch of the facial nerve Action: Press the cheek against the molar teeth when chewing |
| Name the origin, insertion, innervation and action of the levator anguli oris | Origin: Canine fossa of the maxilla Insertion: Modiolus of the mouth Innervation: Buccal branch of the facial nerve Action: Elevate the angle of the mouth |
| Name the origin, insertion, innervation and action of the orbicularis oris | Origin: Median planes of maxilla/mandible Insertion: Skin of the lip Innervation: Buccal branch of the facial nerve Action: Close and Protrude the lips |
| Name the origin, insertion, innervation and action of the nasalis | Origin: Insertion: Innervation: Buccal branch of the facial nerve Action: Flares nostrils and compresses bridge of nose |
| Name the part of the orbicularis oculi that gently closes the eyelids | Palpebral part |
| Name the part of the orbicularis oculi that firmly closes the eyelids | Orbital part |
| Name the part of the orbicularis oculi that compresses the lacrimal sac | Lacrimal part |
| Two out of three of the parts of the orbicularis oculi are innervated by the temporal branch of the facial nerve. Which part is innervated by the zygomatic branch of the facial nerve? | Lacrimal part |
| What is the origin and insertion of the orbicularis oculi? | Origin: Medial orbital margin Insertion: Skin around the margin of the orbit (+ lateral palpebral raphe) |
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