Upper Extremity EMG Flashcards
Abductor pollicis brevis (APB) innervation
Median nerve
Medial cord
Lower trunk
Abductor pollicis brevis (APB) nerve roots
C8-T1
Opponens Pollicis innervation
Median nerve
Medial cord
Lower trunk
Opponens Pollicis nerve roots
C8-T1
Flexor Pollicis Brevis (FPB) innervation
Median & ulnar nerves
Medial cord
Lower trunk
Flexor Pollicis Brevis (FPB) nerve roots
C8-T1
Pronator Quadratus innervation
Anterior interosseous nerve (from median nerve)
Lateral-medial cords
Middle-lower trunks
Pronator Quadratus nerve roots
C7-T1 (predominantly C8)
Flexor Pollicis Longus (FPL) innervation
Anterior interosseous nerve (from median nerve)
Lateral-medial cords
Middle-lower trunks
Flexor Pollicis Longus (FPL) nerve roots
C7-T1 (predominantly C8)
Flexor Digitorum Profundus - Digits 2, 3 innervation
Anterior interosseous nerve (from median nerve)
Medial cord
Lower trunk
Flexor Digitorum Profundus - Digits 2, 3 nerve roots
C7-T1 (predominantly C8)
Flexor Digitorum Sublimis (FDS) innervation
Median nerve
Medial-lateral cords
Middle-lower trunks
Flexor Digitorum Sublimis (FDS) nerve roots
C7-C8 (predominantly C8)
Flexor Carpi Radialis innervation
Median nerve
Lateral cord
Upper-middle trunks
Flexor Carpi Radialis nerve roots
C6-C7
Pronator teres innervation
Median nerve
Lateral cord
Upper-middle trunks
Pronator teres nerve roots
C6-C7
First dorsal interosseous innervation
Ulnar nerve
Medial cord
Lower trunk
First dorsal interosseous nerve roots
C8-T1
Abductor digiti minimi innervation
Ulnar nerve
Medial cord
Lower trunk
Abductor digiti minimi nerve roots
C8-T1
Flexor Digitorum Profundus - Digits 4, 5 innervation
Ulnar nerve
Medial cord
Lower trunk
Flexor Digitorum Profundus - Digits 4, 5 nerve roots
C7-T1 (predominantly C8)
Flexor carpi ulnaris innervation
Ulnar nerve
Medial cord
Lower trunk
Flexor carpi ulnaris nerve roots
C8-T1 (mostly C8)
Extensor indicis proprius innervation
Posterior interosseous nerve (from radial)
Posterior cord
Middle-lower trunk
Extensor indicis proprius nerve roots
C7-C8 (mostly C8)
Extensor Carpi Ulnaris innervation
Posterior interosseous nerve (from radial)
Posterior cord
Middle-lower trunk
Extensor Carpi Ulnaris nerve roots
C7-C8 (mostly C8)
Extensor Digitorum Communis innervation
Posterior interosseous nerve (from radial)
Posterior cord
Middle-lower trunk
Extensor Digitorum Communis nerve roots
C7-C8 (mostly C7)
Extensor Carpi Radialis - Long head innervation
Radial nerve
Posterior cord
Upper-middle trunk
Extensor Carpi Radialis - Long head nerve roots
C6-C7
Brachioradialis innervation
Radial nerve
Posterior cord
Upper trunk
Brachioradialis nerve roots
C5-C6
Anconeus innervation
Radial nerve
Posterior cord
Upper/middle/lower trunks
Anconeus nerve roots
C6-C8 (mostly C7)
Triceps lateral head innervation
Radial nerve
Posterior cord
Upper/middle/lower trunks
Triceps lateral head nerve roots
C6-C8 (mostly C7)
Biceps innervation
Musculocutaneous
Lateral cord
Upper trunk
Biceps nerve roots
C5-C6
Pectoralis major innervation
Medial-lateral pectoral nerves
Medial-lateral cords
Upper/middle/lower trunks
Pectoralis major nerve roots
C5-T1 (mostly C6-C8)
Deltoid medial head innervation
Axillary nerve
Posterior cord
Upper trunk
Deltoid medial head nerve roots
C5-C6
Teres minor innervation
Axillary nerve
Posterior cord
Upper trunk
Teres minor nerve roots
C5-C6
Upper trapezius innervation
Spinal accessory nerve
Upper trapezius nerve roots
C3-C4
Sternocleidomastoid innervation
Spinal accessory nerve
Upper cervical cord
Supraspinatus innervation
Suprascapular nerve
Upper trunk
Supraspinatus nerve roots
C5-C6
Infraspinatus innervation
Suprascapular nerve
Infraspinatus nerve roots
C5-C6
Rhomboids innervation
Dorsal scapular nerve
Rhomboids nerve roots
C4-C5 (mostly C5)
Latissimus Dorsi innervation
Thoracodorsal nerve
Posterior cord
Upper/middle/lower trunks
Latissimus Dorsi nerve roots
C6-C8 (mostly C7)
Serratus anterior innervation
Long thoracic nerve
Serratus anterior nerve roots
C5-C7