MSK Muscles of UE (small book) Flashcards
Abductor digiti minimi
Action, nerve, roots
abduct 5th finger
ulnar
C8, T1
Abductor pollicis brevis
Action, nerve, roots
thumb abduction and opposition
median
C8, T1
Abductor pollicis longus
thumb abduction, wrist radial deviation
radial (posterior interosseous)
C7, 8
Abductor pollicis
thumb palmar and radial abduction
ulnar
C7, 8, T1
Anconeus
Elbow extension
Radial
C7, 8
Biceps (when strong contraction required)
Shoulder flexion
Musculocutaneous
C5, 6, 7
Biceps brachii
Elbow flexion
Musculocutaneous
C5, 6
Brachialis
Elbow flexion
Musculocutaneous/Radial
C5, 6 (C7)
Brachioradialis
Elbow flexion
Radial
C5, 6, (C7)
Coracobrachialis
Shoulder flexion
Musculocutaneous
C5, 6, 7
Deltoid
Shoulder abd
Axillary
C5, 6
Delt (ant fibers)
Flexion, IR, HADD
Axillary
C5,6
Delt (post fibers)
Extension, ER, HABD
Axillary
C5,6
Dorsal interossei
DAB
Finger flexion, abduction
Ulnar
C8, T1
ECRB
Wrist extension
Radial
C7, 8
ECRL
Wrist extension
Radial
C6, 7
ECU
Wrist extension, UD
Radial
C7, 8
Extensor digiti minimi
Fifth finger extension
Radial
C7, 8
Extensor digitorum
Finger extension
Radial
C7, 8
Extensor indicis
Index extension
Radial
C7, 8
Extensor pollicis brevis
Thumb extension/abduction, wrist RD,
Radial
C7, 8
Extensor pollicis longus
Thumb extension
Radial
C7, 8
FCR
Wrist flexion, pronation, RD
Median
C6, 7
FCU
Wrist flexion, elbow flexion, UD
Ulnar
C7, 8
Flexor digiti minimi
5th digit flexion
Ulnar
C8, T1
Flex Digitorum Profundus
Finger flexion
Median, ulnar
C8, T1
Flex Digitorum Superficialis
Finger flexion
Median
C8, T1
Flexor pollicis brevis
Thumb flexion/opposition
Superfician head (median)
Deep head (ulnar)
C8, T1
Flexor pollicis longus
Thumb flexion
Median
C8, T1
Infraspinatus
HABD, adduction, ER
Suprascapular
C5, 6
Lats
Ext, Add, IR
Scapula depression and protraction
Thoracodorsal
C6-8
Lev scap
Elevation, DR
C3, 4 nerve roots
Dorsal Scapular
C3, 4
LH biceps (if arm ER first)
Abduction
Musculocutaneous
C5. 6, 7
Lumbricals
Finger flexion
1-2 median, 3-4 ulnar
C8-T1
Opponens digiti minimi
Oppose 5th finger
Ulnar
C8, T1
Opponens pollicis
Oppose thumb
Median
C8, T1
Palmar Interossei
PAD
Finger flexion, adduction
Ulnar
C8, T1
Pec major
HADD, add, IR, scap depression, protraction
Lateral pectoral nerve
C5, 6
Pec major (clav fibers)
Forward flexion
Lateral pectoral nerve
C5, 6
Pec major (stern fibers)
Extension
Lat/Med Pectoral nerve
C5, 6/C8, T1
Pec minor
DAD - depression, protraction (abduction), DR
Medial pectoral nerve
C8, T1
Pronator quadratus
Pronation
Median
C8, T1
Pronator teres
Pronation, elbow flexion
Median
C6, 7
Rhomb major/minor
Adduction, elevation, DR
Dorsal scapular
C4, 5
Serratus
Depression, protraction, UR
Long thoracic
C5, 6, 7
Subscapularis
Abduction, adduction
Subscapular n.
C5, 6
Subscapularis (when arm at side)
IR
Subscapular n.
C5, 6
Supinator
Supination
Radial
C5, 6
Supraspinatus
Abduction
Suprascapular
C5, 6
Teres major
Ext, add, IR
Subscapular
C5, 6
Teres minor
Add, ER
Ext, HABD
Axillary
C5, 6
Trapezius
Retraction, elevation, depression, UR
Spinal accessory n., C3, 4 nerve roots
Triceps
Elbow extension
Radial
C6, 7, 8
Triceps (LH)
Extension
Radial
C5-T1