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13 Cards in this Set
- Front
- Back
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Masseter |
Prime mover of jaw closure, elevates mandible Trigeminal nerve |
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Temporalis |
Closes jaw, elevates and retracts mandible, maintains position of mandible at rest Trigeminal nerve |
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Medial pterygoid |
Acts with lateral pterygoid muscle to protract (anteriorly) the mandible and promote side to side movements Trigeminal nerve |
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Lateral pterygoid |
Provides forward sliding and side to side grinding movements of the lower teeth Trigeminal nerve |
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Genioglossus |
Protracts tongue, retracts tongue Hypoglossal nerve |
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Hypoglossus |
Depresses tongue and draws its sides inferiorly Hypoglossal nerve |
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Styloglossus |
Retracts and elevates tongue Hypoglossal nerve |
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Buccinator |
Compresses cheek, whistling and sucking Facial nerve |
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Sternocleidmastoid |
Flexes and laterally rotates the head Accessory nerve, branches of cervical spinal nerves C2 and C3 |
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Splenius |
Extend or hyperextend head Cervical spinal nerves |
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External intercostals |
Pulls ribs toward one another to elevate rib cage, aid in inspiration, synergists of diaphragms |
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Internal intercostals |
Draws ribs together and depresses rib cage, aid forced expiration, antagonists of external intercostals |
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Diaphragm |
Prime mover of inspiration, flattens on contraction Phrenic nerves |
