Musculoskeletal system Flashcards
Intrinsic muscles of hand : Median nerve
- APB (palmar abduction)
- opponens pollicis (opposition)
- flexor pollicis brevis (thumb MCP flexion)
- lumbricals (radial side, 1,2) - (MCP flexion, IP extension)
Intrinsic muscles of hand: Ulnar nerve
- abductor digiti minini
- opponens digiti minini
- flexor digiti minini
- adductor pollicis (adducts CMC of tumb)
- lumbricals (ulnar side, 3,4)- ( MCP flexion, IP extension)
- dorsal interossei ( abduction, DAB)
- palmar interossei ( adduction, PAD)
Extrinsic muscles of hand: Median nerve
- flexor digitorum superficialis (flex PIP)
- flexor digitorum profundus (flexion of DIP joints , digits 2, 3)
- ## flexor pollicis longus ( flexion of IP joint of thumb)
Extrinsic muscles of hand: Ulnar nerve
- ## flexor digitorum profundus (flexion of DIP joints, digits 4,5)
Extrinsic muscles of hand: Radial nerve
- extensors digitorum communis (extension of MCP joints)
- extensor digiti minini (extension of of 5th digit)
- extensor indicis proprius ( extension of MCP joint of 2nd digit)
- extensor pollicis longus (extension of IP joint of thumb)
- extensor pollicis brevis (extension of MCP/CMC joints of thumb)
- abductor pollicis longus (abduction/ extension of CMC joint of thumb)
Wrist flexors: Median nerve
- flexor carpi radialis (wrist flexion, radial deviation)
- palmaris longus (wrist flexion)
Wrist flexors: Ulnar nerve
- flexor carpi ulnaris (wrist flexion, ulnar deviation)
Wrist extensors: Radial nerve
- extensor carpi radialis brevis (wrist extension and radial deviation)
- extensor carpi radialis longus (wrist extension and radial deviation)
- extensor carpi ulnaris (wrist extension and ulnar deviation)
Volar forearm muscles: Median nerve
- pronator teres (forearm pronation)
- pronator quadratus (forearm pronation)
Dorsal forearm muscles: Radial nerve
- supinator (forearm supination)
Elbow flexors
- biceps (musuclocuteanous nerve)
(elbow flexion w/ forearm supinated) - brachialis (musculocuteanous nerve) (elbow flexion w/forearm pronated)
- brachioradialis (radial nerve) (elbow flexion w/ forearm neutral)
Elbow extensors (radial nerve)
- triceps
- anconeus
Rotator cuff muscles
- subscapularis (internal rotation)
- supraspinatus (abduction and flexion)
- infraspinatus (external rotation)
- teres minor (external rotation)
Shoulder flexion
-anterior deltoid (axillary nerve)
-coracobrachialis (musculocutaneous)
-supraspinatus
shoulder abduction muscles
- middle deltoid
- supraspinatus
horizontal abduction muscles
- posterior deltoid
horizontal adduction muscles
- pec major
shoulder extension muscles
- latss dorsi
- teres major
- posterior deltoid
scapula upward rotation
- traps
- serratus anterior
scapula downward rotation
- levator scapulae
- rhomboids
- serratus anterior
- lats
scapula adduction
- mid trapezius
- rhomboid major
scapula abduction
- serratus anterior
scapula elevation
- upper traps
- levator scapulae
scapula depression
- lower traps