Term
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Definition
Draws corner of mouth downward
Depresses mandible
Elevates skin of chest |
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Term
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Definition
| Cervical branch of Facial N. (CN VII) |
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Term
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Definition
Unilaterally acting: rotates head toward opposite side while elevating chin
Bilaterally acting: flexes head |
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Term
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Definition
Spinal Accessory N. (CN XI)
Cervical spinal nerves C2 & C3 |
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Term
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Definition
Elevates hyoid & base of tongue
With hyoid fixed via infrahyoid musculature, assists in opening the mouth |
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Term
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Definition
Anterior belly: Mylohyoid N. (CN V3)
Posterior belly: Digastric branch of Facial N. (CN VII) |
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Term
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Definition
| Elevates & retracts the hyoid & base of tongue |
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Term
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Definition
| Digastric branch of Facial N. (CN VII) |
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Term
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Definition
Elevates hyoid & floor of mouth
When hyoid is fixed, depresses mandible |
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Term
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Definition
| Mylohyoid branch of Trigeminal (CN V3) |
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Term
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Definition
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Term
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Definition
| Ansa cervicalis of cervical plexus |
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Term
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Definition
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Term
| Sternothyroid: Innervation |
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Definition
| Ansa cervicalis of cervical plexus |
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Term
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Definition
Depresses hyoid when larynx is fixed from below
Elevates larynx when hyoid is fixed from above |
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Term
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Definition
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Term
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Definition
| Stabilizes, retracts, & depresses hyoid & larynx |
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Term
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Definition
| Ansa cervicalis of cervical plexus |
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Term
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Definition
Elevates 1st rib
Side bends & rotates cervical column to opposite side
Both sides acting flexes vertebral column |
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Term
| Anterior Scalene: Innervation |
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Definition
| Ventral rami: spinal nerves C5-C7 |
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Term
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Definition
Elevates 1st rib
Side bends & rotates cervical column
Both sides acting flexes the vertebral column |
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Term
| Middle Scalene: Innervation |
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Definition
| Ventral rami: spinal nerves C3-C8 |
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Term
| Posterior Scalene: Action |
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Definition
Elevates 2nd rib
Side bends & rotates cervical column
Both sides acting flexes vertebral column |
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Term
| Posterior Scalene: Innervation |
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Definition
| Ventral rami from brachial plexus (C7-C8) |
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Term
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Definition
| Draws the thyroid cartilage forward, lengthening the vocal ligaments |
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Term
| Cricothyroid: Innervation |
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Definition
| External branch of superior laryngeal nerve Branch of the vagus nerve (X) |
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Term
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Definition
Extends and laterally bends the neck and head
Rotates head to the same side |
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Term
| Splenius Capitis: Innervation |
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Definition
| Dorsal primary rami of spinal nerves C2-C6 |
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Term
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Definition
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Term
| Levator Scapulae: Innervation |
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Definition
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