Term
| What scapular muscle is innervated by the spinal accessory nerve (CNXI)? |
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Definition
| Upper, middle, and Lower Trapezius |
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Term
| Upper Trapezius (origin, insertion, function) |
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Definition
| [image]
origin: occiput and ligamentum nuchae
insertion: later 1/3 of clavicle
function: upward rotation and elevation of scapula |
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Term
| Middle Trapezius (origin, insertion, function) |
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Definition
| [image]
origin: spinous processes of T1 through T5
insertion: acromion and spine of scapula
function: upward rotation and ADduction of the scapula |
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Term
| Lower Trapezius (origin, insertion, function) |
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Definition
| [image]
origin: spinous processes of T6 through T12
insertion: medial end of spine of scapula
function: upward rotation and depression of scapula |
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Term
| What scapular muscle is innervated by the long thoracic nerve? |
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Definition
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Term
| Serratus anterior (origin, insertion, function) |
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Definition
| [image]
origin: ribs 1 through 8 and aponeurosis of intercostals
insertion: superior and inferior angles of scapula and vertebral border of scapula
function: upward and downward rotation and ABduction of scapula |
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Term
| What scapular muscle is innervated by C3 and C4 nerves? |
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Definition
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Term
| Levator scapulae (origin, insertion, function) |
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Definition
| [image]
origin: C1 through C4 transverse processes
insertion: vertebral border of scapula
function: downward rotation of the scapula |
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Term
| What scapular muscle is innervated by the dorsal scapular nerve? |
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Definition
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Term
| Rhomboids (origin, insertion, function) |
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Definition
| [image]
origin: C7 through T5 spinous processes
insertion: spinous process
function: downward rotation and ADduction of scapula |
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