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BrachialPlexus nerve

BrachialPlexus wvssom

QuestionAnswer
Musculocutaneous nerve anterior compartment of arm: Coracobrachialis (shoulder flexion), biceps brachii, brachialis (both flex at elbow). Sensory from lateral forearm
Axillary nerve Deltoid and Teres Minor. Sensory from lateral shoulder
Radial nerve posterior compartment of arm: all heads of triceps brachii and anconeus> And all muscles of posterior forearm (extensors)
Median nerve innervates nearly all muscles of anterior forearm, and few of the hand.
Ulnar nerve innervates 1.5 muscles in anterior forearm and nearly all in hand
Dorsal scapular nerve innervates levator scapulae (elevation of scapula) and both rhomboids (retraction and inferior rotation of scapula)
Long thoracic nerve innervates serratus anterior (protraction and rotation of scapula)
Subclavius nerve innervates subclavius, which stabilizes the clavicle
Suprascapular nerve innervates supraspinatus (initiation of arm abduction) and infraspinatus (lateral rotation of arm)
Subscapular nerve innervates subscapularis (internal rotation of arm) and teres major (arm adduction and internal rotation)
Thoracodorsal nerve innervates Latissimus Dorsi (adduct, extend, laterally rotate)
Medial pectoral nerve innervates pectoralis major (adduct, medially rotate arm) and pectoralis minor (stabilize scapula by pulling coracoid process inferiorly and anteriorly
Lateral pectoral nerve Pectoralis major (adduct, medially rotate arm)
Posterior cord damage leads to: loss of radial and axillary nerve function
Lateral cord damage leads to: loss of MC and lateral pectoral nerve fx with weakened median nerve fx
Medial cord damage leads to: loss of ulnar nerve fx, loss of sensation from medial and arm and forearm, loss of medial pectoral nerve fx
Created by: dkozhev
 

 



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