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MUSCULOCUTANEOUS NERVE

Nerve Anatomy
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Overview

From WUSTL Neuromuscular

Anatomy Origin Roots: C5-C7 Brachial plexus: Lateral cord Passes through coracobrachialis muscle Innervation Motor Muscles: Biceps; Brachialis; Coracobrachialis Actions: Elbow flexion Sensory (Lateral antebrachial cutaneous nerve) Roots: C5-C7 Forearm distribution: Radial side from elbow to wrist Anomalous branch: To median nerve in arm Lesions Clinical Onset: Often sudden Weakness: Weak elbow flexion & supination Muscles: Biceps & Coracobrachialis Normal strength: Spinati; Deltoids; Brachioradialis Sensory loss & Dysesthesias: Throwing arm Lateral antebrachial nerve territory Lateral forearm

Related Conditions

Shared genes
AXILLARY NERVE
C6BRACHIAL
Brachial Plexus: Structure
C8C7C6

External Resources

WUSTL Neuromuscular
Washington University Disease Center
PubMed
Biomedical Literature
GeneReviews
NCBI Expert-Authored Reviews
Orphanet
Portal for Rare Diseases
NORD
National Organization for Rare Disorders

Data sourced from the Washington University Neuromuscular Disease Center. For clinical use, always refer to primary sources.