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Anatomy
Question | Answer |
---|---|
Pectoralis Major | adduct & medially rotate humerus; flex humerus |
Pectoralis Minor | depress & protract scapula |
Serratus Anterior | protracts & rotates scapula |
Trapezius | elevate, retract, rotate scapula |
Rhomboid Major | retract, elevate & downwardly rotate scapula; fix scapula to thoracic wall |
Rhomboid Minor | retract & elevate scapula |
Levator Scapulae | elevate scapula |
Latissimus dorsi | extend, adduct, & (especially) medially rotate humerus |
Deltoid | Anterior: flex/ medially rotate humerus; Lateral: abduct humerus; Posterior: extends/ laterally rotates humerus |
Subscapularis | medially rotate/ adduct humerus; help stabilize shoulder joint |
Teres Minor | lateral rotation of humerus |
Infraspinatus | lateral rotation of humerus |
Supraspinatus | helps deltoid abduct arm |
Teres Major | adducts & medially rotates humerus |
Biceps brachii (long head) | Flex GHJ and elbow, supinate forearm |
Biceps Brachii (short head) | Flex GHJ and elbow, supinate forearm |
Coracobrachialis | Flex GHJ; flex & adduct arm |
Brachialis | Flex elbow |
Triceps Brachii (long head) | extend forearm/ GHJ & elbow |
Triceps Brachii (Lateral Head) | extend forearm/ GHJ & elbow |
Triceps Brachii (Medial Head) | extend forearm/ GHJ & elbow |
Pronator Teres | Pronate forearm & flex elbow |
Flexor Carpi Radialis | Flex wrist & abduct hand |
Palmaris Longus | Flex wrist, tense palmar aponeurosis |
Flexor Carpi Ulnaris | Flex wrist & adduct hand |
Flexor digitorum superficialis | flex 2-5 (not thumb) at MCP/PIP (not DIP) |
Flexor Digitorum Profundus | Flex digits 2-5 (MCP, PIP, & especially DIP) |
Flexor pollicis longus | Flex thumb (MCP and IP joints) |
Pronator quadratus | Pronate forearm |
Brachioradialis | Flex elbow/ forearm |
Extensor carpi radialis longus | Extend/ abduct hand at wrist |
Extensor carpi radialis brevis | Extend/ abduct hand at wrist |
Extensor Carpi Ulnaris | Extend/ adduct hand at wrist |
Extensor Digitorum | Extend digits 2-5 (MCP); Extend wrist |
Extensor digiti minimi | Extend digit 5 (MCP, PIP, DIP) |
Extensor indicis | Extend digit 2 |
Extensor pollicis longus | Extend thumb (CMC, MCP, PIP) |
Extensor pollicis brevis | Extend thumb (CMC, MCP) |
Abductor pollicis longus | Abduct and extend thumb |
Supinator | Supinate forearm |
Abductor digiti minimi | Abduct digit 5 |
Flexor digiti minimi brevis | Flex proximal phalanx of digit 5 |
Opponens digiti minimi | Bring digit 5 into opposition with thumb |
Adductor pollicis | Adduct thumb toward digit 3 |
Lumbricals 1-2 | Flex digits at MCPs; extend IP joints |
Lumbricals 3-4 | Flex digits at MCPs; extend IP joints |
Palmar interossei | Adduct digits 2, 4, & 5 |
Dorsal interossei | Abduct 2-4 |