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BrachialPlexus nerve
BrachialPlexus wvssom
| Question | Answer |
|---|---|
| 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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