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16 Cards in this Set
- Front
- Back
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brachial plexus provides
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neural infrastructure for upper extremity
-complete motor and almost all sensory for upper extremity |
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2 types of plexus
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somatic
visceral |
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somatic plexus
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provides supply to body wall and limb muscles
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visceral (autonomic) plexus
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supplies internal organs
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how many nerves leave the CNS?
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43 pairs (12 cranial pairs and 31 spinal pairs)
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spinal pairs
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cervical 8
thoracic 12 lumbar 5 sacral 5 coccygeal 1 |
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components of a spinal nerve
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roots
spinal nerve trunk rami |
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roots
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dorsal root
-w/dorsal root ganglion(sensory) ventral root -motor fibers (somatic and autonomic) |
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rami
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dorsal ramus
ventral ramus both have motor and sensory fibers |
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plexus of 5's
brachial plexus has 5 ventral ramuses and 5 terminal branches |
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supraclavicular branches of brachial plexus
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dorsal scapular nerve
long thoracic nerve suprascapular nerve nerve to subclavius |
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what constitutes above the clavicle or supraclavicular?
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roots
trunks divisions |
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branches from lateral cord
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lateral pec
lateral head of median musculotaneous |
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branches from medial cord
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medial pec
medial brachial cutaneous medial antebrachial cutaneous medial head of median nerve ulnar nerve |
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pectoralis major is an amalgamated muscle
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supplied by 2 nerves
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branches from posterior
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radial
axillary lower subscapular middle subscapular (thoaracodorsal) upper subscapular |
