Term
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Definition
| The Anterior Rami of C5 through T1 spinal nerves |
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Term
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Definition
C5-C6 form upper trunk
C7 forms the middle trunk
C8-T1 form the lower trunk |
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Term
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Definition
Dorsal Scapular nerve
Phrenic nerve
contributes to the long thoracic nerve
Combines with C6 to form upper trunk |
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Term
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Definition
formed from C5 and C6
suprascapular nerve
nerve to subclavius |
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Term
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Definition
combines with C5 to form the upper trunk
contributes to long thoracic nerve |
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Term
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Definition
| each trunk splits into 2 divisions: the anterior and posterior |
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Term
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Definition
becomes the middle trunk
sometimes contributes to long thoracic nerve |
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Term
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Definition
| combines with T1 to become the lower trunk |
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Term
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Definition
first intercostal nerve
combines with C8 to form lower trunk |
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Term
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Definition
the 6 divisions of the trunks then recombine to form cords:
lateral cord
medial cord
posterior cord |
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Term
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Definition
formed from the posterior divisions of all three trunks
upper subscapular nerve
thoracodorsal nerve
lower subscapular nerve
axillary nerve
contributes to radial nerve |
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Term
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Definition
formed from the anterior divisions of the upper and middle trunks
lateral pectoral nerve
musculocutaneous nerve
lateral root of median nerve |
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Term
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Definition
continuation of the anterior division of the lower trunk
medial pectoral nerve
medial root of medial nerve
medial cutaneous nerve of arm
medial cutaneous nerve of forearm
ulnar nerve |
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Term
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Definition
from C5 root
rhomboid muscle, levator scapulae |
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Term
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Definition
from roots of C5, C6, sometimes C7
serratus anterior |
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Term
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Definition
from upper trunk
subclavius muscle |
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Term
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Definition
from upper trunk
supraspinatus muscle, infraspinatus muscle |
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Term
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Definition
from lateral cord
pectoralis major (along with medial pectoral nerve) |
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Term
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Definition
from lateral cord
coracobrachialis, brachialis, biceps brachii |
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Term
| lateral root of median nerve |
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Definition
from lateral cord
contributes to median nerve |
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Term
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Definition
from posterior cord
subscapularis (superior part) |
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Term
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Definition
from posterior cord
latissimus dorsi |
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Term
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Definition
from posterior cord
subscapularis (inferior portion)
teres major |
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Term
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Definition
from posterior cord
has two branches: anterior & posterior
anterior: deltoid
posterior: teres minor and deltoid |
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Term
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Definition
from posterior cord
triceps brachii, supinator, anconeus, brachioradialus, extensor muscles of the forearm |
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Term
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Definition
from medial cord
pectoralis major, pectoralis minor |
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Term
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Definition
| from medial cord, lateral cord |
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Term
| medial cutaneous nerve of arm |
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Definition
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Term
| medial cutaneous nerve of forearm |
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Definition
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Term
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Definition
from medial cord
flexor carpi ulnaris, medial bellies of digitorum profundus, intrinsic hand muscles (except thenar and lumbricals) |
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