Branch Root Motor Sensory Musculocutaneous C5-C7 Muscles in the anterior compartment of the Skin on lateral side of the forearm arm FLEXORSSSSSS Biceps brachii Brachialis Coracobrachialis Axillary C5 , C6 Deltoid, Teres Minor Skin over upper lateral part of the arm Radial C5-C8, T1 Muscles in the posterior compartment of the Skin on the posterior aspects of the arm and arm forearm EXTENSORSSSSS Lower lateral surface of arm Dorsal lateral surface of the hand Median (lateral and medial root (C5 sometimes) Anterior forearm Skin over palmar surface of the lateral three and C6-T1 All muscles in the anterior compartment of one half digits the forearm EXCEPT: Flexor carpi ulnaris Medial half of Flexor digitorum profundus (supplies lateral half of flexor digitorum profundus) Hand Intrinsic muscles of the hand & skin of palm LLOAF LL. (lateral lumbricles) O.A.F (three thenar muscles) Opponens pollicis aBductor pollicis brevis flexor pollicis brevis Ulnar C8, T1 Anterior forearm Skin over palmar surface – medial one and a half digits flexor capri ulnaris Skin over dorsal surface- one and a half digits medial half of flexor digitorum profundus Hand All Intrinsic muscles of the hand & skin of palm EXCEPT: Three thenar muscles Lateral lumbricles Thoracodorsal C6-C8 Lattisimus dorsi - Long thoracic nerve C5-C7 Lies on the superficial aspect of the serratus anterior and supplies this muscle DERMATOMES - Sensory supply
Branch Root Motor Sensory Musculocutaneous C5-C7 Muscles in the anterior compartment of the arm FLEXORSSSSSS Biceps brachii Brachialis Coracobrachialis Skin on lateral side of the forearm Axillary C5 , C6 Deltoid, Teres Minor Skin over upper lateral part of the arm Radial C5-C8, T1 Muscles in the posterior compartment of the arm EXTENSORSSSSS Skin on the posterior aspects of the arm and forearm Lower lateral surface of arm Dorsal lateral surface of the hand Median (lateral and medial root (C5 sometimes) C6-T1 Anterior forearm All muscles in the anterior compartment of the forearm EXCEPT: Flexor carpi ulnaris Medial half of Flexor digitorum profundus (supplies lateral half of flexor digitorum profundus) Hand Intrinsic muscles of the hand & skin of palm LLOAF LL. (lateral lumbricles) O.A.F (three thenar muscles) Opponens pollicis aBductor pollicis brevis flexor pollicis brevis Skin over palmar surface of the lateral three and one half digits Ulnar C8, T1 Anterior forearm flexor capri ulnaris medial half of flexor digitorum profundus Hand All Intrinsic muscles of the hand & skin of palm EXCEPT: Three thenar muscles Lateral lumbricles Skin over palmar surface – medial one and a half digits Skin over dorsal surface- one and a half digits Thoracodorsal C6-C8 Lattisimus dorsi - Long thoracic nerve C5-C7 Lies on the superficial aspect of the serratus anterior and supplies this muscle DERMATOMES - Sensory supply
23._msk_anatomy-_pre_clinical_-_janine_adedeji.docx