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5 Cards in this Set
- Front
- Back
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What are the four main origins (proximal attachments) of the trapezius muscle?
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1) medial 1/3 of superior
nuchal line 2) external occipital protuberance 3) nuchal ligament 4) C7-T12 vertebral spines |
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What are the two main insertions (distal attachments) of the trapezius muscle?
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1) posteromedial superior border
of clavicle's lateral third 2) anteromedial superior border of acromion & scapular spine |
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What innervates the trapezius muscle?
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MOTOR FIBERS: spinal accessory
nerve (CN XI) PAIN & PROPRIOCEPTIVE FIBERS: C3 & C4 spinal nerves |
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What are the four main actions of the trapezius muscle?
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1) Descending (upper) part elevates scapula
2) Ascending (lower) part depresses scapula 3) Middle part (or all parts together) retracts scapula 4) Descending and ascending parts act together to rotate glenoid cavity superiorly |
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What artery supplies the trapezius muscle?
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transverse cervical artery
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