11680950
Description
Flashcards by Mansi Trikha, updated more than 1 year ago
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Created by Mansi Trikha
about 8 years ago
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| Question | Answer |
| Occipitalis (Epicranius) | Origin: Occipital bone Insertion: Galea aponeuroitca Action: Pulls scalp posteriorly |
| Frontalis (Epicranius) | Origin: Galea aponeuroitca Insertion: Skin of eyebrows Action: Raise eyebrows; wrinkle forhead |
| Corrugator supercilli | Origin: Frontal bone Insertion: Skin of eyebrow Action: Draws eyebrows together; wrinkles forhead |
| Orbicularis oculi | Origin: Frontal and maxillary bones Insertion: Tissue of eyelid Action: Draws eyebrows downward (blink, squint) |
| Orbicularis oris | Origin: Maxilla and mandible (indirect) Insertion: Muscles and skin at edge of mouth Action: closes lips, purses and protrudes lips (kiss) |
| Bucinator | Origin: Maxilla and mandible Insertion: Orbicularis oris Action: Draws corner of mouth laterally |
| Zygomaticus | Origin: Zygomatic bone Insertion: Muscles and skin at edge of mouth Action: Raises corners of mouth upwards |
| Platysma | Origin: Fascia of chest Insertion: Lower margin of mandible Action: Depress mandible |
| Risorius | Origin: Fascia of masseter Insertion: Angle of mouth Action: Draws lips laterally |
| Levator labii superioris | Origin: Zygomatic and maxilla Insertion: Skin and muscle of upper lip Action: Opens lips & flares nostrils |
| Depressor labii inferioris | Origin: Mandible Insertion: Skin and muscle of lower lip Action: Draws lower lip downward |
| Masseter | Origin: Zygomatic arch Insertion: Angle of mandible Action: Prime mover for jaw movement |
| Temporalis | Origin: Temporal fossa Insertion: Coronoid process of mandible Action: Closes jaw, retracts mandible (jaw closed at rest) |
| Medial pterygoid | Origin: Sphenoid ; palatine plate, medial surface Insertion: Mandible Action: Elevates jaw |
| Lateral pterygoid | Origin: Sphenoid, greater wing Insertion: Condyle of mandible Action: Protrudes mandible |
| Genioglossus | Origin: Mandible, internal surface Insertion: Bottom of tongue, body of hyoid Action: Protrudes tongue |
| Hyoglossus | Origin: Hyoid Insertion: Bottom and lateral aspects of tongue Action: Depress tongue |
| Styloglossus | Origin: Styloid process of temporal bone Insertion: Bottom and lateral aspects of tongue Action: Retracts tongue |
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