Arms Muscle Table PDF

Arms **Muscle** **Origin** **Insertion** **Innervation** **Action** --------------------------- ---------------------------------------------------------------- -------------------...

Arms **Muscle** **Origin** **Insertion** **Innervation** **Action** --------------------------- ---------------------------------------------------------------- ----------------------------------------- ------------------------------- ----------------------------------- Coracobrachialis Coracoid process of scapula Middle 1/3 of medial humerus musculocutaneous nerve (C5-7) GH flexion and adduction Biceps brachii long head Coracoid process of scapula Radial tuberosity musculocutaneous nerve (C5-7) Supination and flexion of elbow Biceps brachii short head Supraglenoid tubercle Bicipital aponeurosis musculocutaneous nerve (C5-7) Supination and flexion of elbow Brachialis Anterior surface of distal half of humerus Coronoid process and tuberosity of ulna musculocutaneous nerve (C5-7) Elbow flexion (main flexor) Triceps long head Infraglenoid tubercle Olecranon process of ulna Radial Nerve (C5-T1) Elbow extension Triceps lateral head Posterior surface of humerus superior to radial groove Olecranon process of ulna Radial Nerve (C5-T1) Elbow extension Triceps medial head Posterior surface of the humerus inferior to the radial groove Olecranon process of ulna Radial Nerve (C5-T1) Elbow extension Anconeus Lateral epicondyle of humerus Lateral surface of olecranon proves Radial Nerve (C5-T1) Elbow extension and stabilisation Forearm Extensor **Muscle** **Origin** **Insertion** **Innervation** **Action** -------------------------------- -------------------------------------------------------------------------- ----------------------------------------------- ------------------------------------- ------------------------------------------------------------------- Brachioradialis Lateral supracondylar ridge and adjacent intermuscular septum Lateral surface of distal radius Radial Nerve (C5-T1) Flexes forearm in mid-prone position Extensor Carpi Radialis Longus Lateral supracondylar ridge of humerus and adjacent intermuscular septum Bas of 2^nd^ metacarpal Radial Nerve (C5-T1) Extension of wrist and radial deviation (abduction) Extensor carpi radialis brevis Lateral epicondyle of the humerus and adjacent intermuscular septum Base of 3^rd^ metacarpal Deep Radial Nerve (C5 -- T1) Extension of wrist and radial deviation Extensor digitorum Lateral epicondyle of humerus and adjacent intermuscular septum Middle and distal phalanges of digits 2-5 Posterior interosseous nerve (C7-8) Extension of MCPS, extension of PIPS and DIPS, extension of wrist Extensor digiti minimi Lateral epicondyle of the humerus and adjacent intermuscular septum Extensor expansion of 5^th^ digit Posterior interosseous nerve (C7-8) Extension of 5^th^ digit Extensor carpi ulnaris Lateral epicondyle of the humerus and posterior border of the ulna Base of the 5^th^ metacarpal Posterior interosseous nerve (C7-8) Extension and ulna deviation (adduction of wrist) Supinator (superficial) Lateral epicondyle oh humerus, radial collateral and annular ligament Proximal 1/3^rd^ of lateral surface of radius Deep radial nerve (C5-T1) Supination Supinator (deep) Supinator crest of ulna Proximal 1/3^rd^ of lateral surface of radius Deep radial nerve (C5-T1) Supination Abductor pollicis longus Posterior surface of radius and ulna and interosseous membrane Base of the 1^st^ metacarpal Posterior interosseous nerve (C7-8) Abduction of thumb and extension of carpometacarpal join Extensor pollicis brevis Posterior surface of distal 1/3^rd^ radius and interosseous membrane Base of proximal phalanx of 1^st^ digit Posterior interosseous nerve (C7-8) Extension of IP joint of thumb, MCP and CMC joints Extensor pollicis longus Posterior surface of middle ulna and interosseous membrane Base of distal phalanx of 1^st^ digit Posterior interosseous nerve (C7-8) Extends IP joint of thumb, MCP and CMC joints Extensor indicis Posterior surface of disal 1/3^rd^ ulna nad interosseous membrane Extensor expansion of 2^nd^ digit Posterior interosseous nerve (c7-8) Extends 2^nd^ digit at MCP joint Forearm Flexor +-------------+-------------+-------------+-------------+-------------+ | Muscle | Origin | Insertion | Innervation | Action | +=============+=============+=============+=============+=============+ | Pronator | Coronoid | Middle part | Median | Pronates | | teres | process of | of lateral | nerve | forearm and | | | ulna and | surface of | (C6-T1) | flexes | | | medial | radius | | elbow | | | epicondyle | | | | | | of humerus | | | | +-------------+-------------+-------------+-------------+-------------+ | Flexor | Medial | Base of the | Median | Wrist | | carpi | epicondyle | 2^nd^ | nerve | flexion and | | radialis | of humerus | metacarpal | (C6-T1) | radial | | | | | | deviation | | | | | | (abduction) | +-------------+-------------+-------------+-------------+-------------+ | Palmaris | Medial | Distal | Median | Wrist | | longus | epicondyle | flexor | nerve | flexion and | | | of humerus | retinaculum | (C6-T1) | tenses | | | | and palmer | | palmer | | | | aponeurosis | | aponeurosis | +-------------+-------------+-------------+-------------+-------------+ | Flexor | Medial | Pisiform | Ulnar nerve | Wrist | | carpi | epicondyle | and hook of | (C8) | flexion and | | ulnaris | of humerus | hamate and | | ulnar | | | and | 5^th^ | | deviation | | | olecranon | metacarpal | | (adduction) | | | process of | | | | | | ulna | | | | +-------------+-------------+-------------+-------------+-------------+ | Flexor | Medial | Palmar | Median | Flexes | | digitorum | epicondyle | surface of | nerve | middle | | superficial | and | the middle | (C6-T1) | phalanges, | | ais | coronoid | phalanges | | flexion of | | | process and | for digits | | PIP and | | | proximal | 2-5 | | MCPS digits | | | half of | | | 2-5 | | | anterior | | | | | | radius | | | | +-------------+-------------+-------------+-------------+-------------+ | Flexor | Proximal ¾ | Base of | Lateral | Flexes the | | digitorum | of anterior | distal | half: | DIPS | | profundus | ulna and | phalanges | interosseou | | | | adjacent | 2-5 | s | | | | interosseou | | nerve | | | | s | | (C8-T1 | | | | membrane | | | | | | | | Medial | | | | | | half: ulna | | | | | | nerve | | | | | | (C8-T1) | | +-------------+-------------+-------------+-------------+-------------+ | Flexor | Anterior | Base of | Anterior | Flexes | | pollicius | surface of | distal | interosseou | interphalan | | longus | distal | phalanx 1 | s | geal | | | radius and | | nerve | join of | | | adjacent | | (C8-T1) | 1^st^ digit | | | interosseou | | | | | | s | | | | | | membrane | | | | +-------------+-------------+-------------+-------------+-------------+ | Pronator | Distal | Distal | Anterior | Pronation | | quadratus | anterior | anterior | interosseou | of forearm | | | surface of | surface of | s | | | | ulna | radius | nerve | | | | | | (C8-T1) | | +-------------+-------------+-------------+-------------+-------------+ Carpal Bones S-ome -\> Scaphoid L-overs -\> Lunate T-try -\> Triquetrum P-ositions -\> pisiform T-hat -\> Trapezium T-hey -\> Trapizoid C-ant -\> capitate H-andle -\> Hamate Joints of the Hand - Radioulnar Joint -\> Synovial Pivot - Wrist -\> Synovial condyloid - Intercarpal joints -\> synovial plane - Carpometacarpal joints -\> synovial Plane - Thumb is a synovial saddle - Metacarpophalangeal joint -\> synovial condyloid - Interphalangeal joint --\> synovial hinge Hand Muscles Muscle Origin Insertion Innervation Action -------------------------- ---------------------------------------------------------------------------------------- --------------------------------------------------------------- ------------------------------------------------------------- ------------------------------------------- Flexor pollicis brevis Flexor retinaculum, scaphoid and trapezium Lateral aspect of base of proximal phalanx Recurrent branch of median nerve (C8-T1) Flexes MCP joint of 1^st^ digit Abductor pollicis brevis Flexor retinaculum, scaphoid and trapezium Lateral aspect of base of proximal phalanx Recurrent branch of the medial nerve (C8-T1) Abduction of the MCP joint of 1^st^ digit Opponens Pollicis Flexor retinaculum, scaphoid and trapezium Lateral side of the 1^st^ metacarpal Recurrent branch of median nerve (C8-T1) Draws thumb and pinky together Adductor pollicis Base of 2^nd^ and 3^rd^ metacarpals, capitate and anterior surface of 3^rd^ metacarpal Base of proximal phalanx of 1^st^ digit on medial side Deep branch ulna nerve (C8-T1) Adduction of thumb Flexor digiti minimi Hamate Base of proximal phalanx of 5^th^ digit medial side Deep branch of ulna nerve (C8-T1) Flexes 5^th^ digit at MCP Abductor digiti minimi Pisiform Base of proximal phalanx of 5^th^ digit medial side Deep branch of ulna nerve (C8-T1) Abduction of 5^th^ digit at MCP Opponens digiti minimi Hook of hamate and flexor retinaculum Base of proximal phalanx of 5^th^ digit medial side Deep branch of ulna nerve (C8-T1) Opposition of 5^th^ digit Lumbricals Tendons of flexor digitorum produndus Lateral side of extensor expansions digits 2-5 Deep branch of ulnar nerve (C8-T1) and median Nerve (C8-T1) Flexes MCP and extends IP digits 2-5 Palmar interossi Palmar surface of 2,4,5 metacarpals Extensor expansions of digits 2,4,5 Deep branch of ulna nerve (C8-T1) Adducts digits Dorsal interossei Adjacent 2 metacarpals (dorsal aspect) Base of proximal phalanges, extensor expansions of digits 2-4 Deep ulnar branch (C8-T1) Abduction of MCPs