Muscles of the upper extremity Musculi antebrachii •ANTEBRACHIAL MUSCLES •ANTERIOR GROUP OF MUSCLES •The anterior group work as flexors of hand and fingers, also pronators of forearm are here. • • Musculus pronator teres •ORIGIN: caput humerale-epicondylus medialis humeri, caput ulnare-processus coronoideus ulnae •INSERTION : middle part of corpus radii •INNERVATION: n. medianus •FUNCTION: pronation and flexion of forearm • Musculus flexor carpi radialis •ORIGIN: epicondylus medialis humeri •INSERTION : basis of 2nd anf 3rd metacarpus •INNERVATION: n. medianus •FUNCTION: flexion of forearm, palmar flexion of hand and its radial duction • Musculus palmaris longus •ORIGIN: epicondylus medialis humeri •INSERTION : aponeurosis palmaris •INNERVATION: n. medianus •FUNCTION: flexion of hand and forearm • Musculus flexor carpi ulnaris •ORIGIN: epicondylus medialis humeri, olecranon ulnae •INSERTION: os pisiforme, ligamentum pisohamatum, ligamentum pisometacarpeum •INNERVATION: n. ulnaris •FUNCTION: flexion of forearm and hand, ulnar duction • Musculus flexor digitorum superficialis •ORIGIN: epicondylus medialis humeri, processus coronoideus ulnae and radius •INSERTION: middle pahalnx of 2nd-5th fingers, it forms chiasma tendinum •INNERVATION: n. medianus •FUNCTION: flexion of hand, middle phalanx and forearm • Musculus flexor pollicis longus •ORIGIN: anterior surface of radius and membrana interossea antebrachii •INSERTION : distal phalanx of thumb •INNERVATION: n. medianus •FUNCTION: flexion of thumb and hand Musculus flexor digitorum profundus •ORIGIN: anterior side of ulna and membrana interossea antebrachii •INSERTION : distal phalanx of 2nd-5th fingers •INNERVATION: n. medianus (2nd and 3th fingers), n. ulnaris (4th and 5th fingers) •FUNCTION: flexion of hand and fingers Musculus pronator quadratus •ORIGIN: anterior surface of ulna •INSERTION : distal quarter of radius •INNERVATION: n. medianus •FUNCTION: pronation of forearm • LATERAL GROUP OF ANTEBRACHIAL MUSCLES Musculus brachioradialis •ORIGIN: lateral margin of distal part of humerus •INSERTION : processus styloideus radii •INNERVATION: n. radialis •FUNCTION: flexion of forearm, it paticipates in pronation and supination • • Musculus extensor carpi radialis longus •ORIGIN: distal part of humerus •INSERTION :base of 2nd metacarpal bone •INNERVATION: n. radialis •FUNCTION: extension of hand and radial duction • Musculus extensor carpi radialis brevis •ORIGIN: epicondylus lateralis humeri •INSERTION: base of 3rd metacarpal bone •INERVACE: n. radialis •FUNKCE: extension and radial duction of hand • Musculus supinator •ORIGIN: epicondylus lateralis humeri, ligamentum collaterale laterale, ligamentum anulare radii, crista musculi supinatorii •INSERTION : from tuberositas radii to the insertion of pronator teres •INNERVATION: n. radialis •FUNCTION: supinace of forearm • POSTERIOR GROUP OF ANTEBRACHIAL MUSCLES Musculus extensor digitorum communis •ORIGIN: epicondylus lateralis humeri •INSERTION : dorsal aponeurosis (posterior side of all three phalanges) •INNERVATION: n. radialis •FUNCTION: extension of hand and fingers • Musculus extensor digiti minimi •ORIGIN: epicondylus lateralis humeri •INSERTION : dorsal aponeurosis of 5th finger •INNERVATION: n. radialis •FUNCTION: extenion of hand and 5th finger • Musculus extensor carpi ulnaris •ORIGIN: epicondylus lateralis humeri •INSERTION : base of 5th metacarpal bone •INNERVATION: n. radialis •FUNCTION: extension and ulnar duction of hand • Musculus abductor pollicis longus •ORIGIN: prox. part of ulna, membrana, prox. part of radius •INSERTION : base of 1st metacarpal bone •INNERVATION: n. radialis •FUNCTION: abduction of thumb • Musculus extensor pollicis brevis •ORIGIN: radius, membrana •INSERTION : dorsal side of prox. phalanx of thumb •INNERVATION: n. radialis •FUNCTION: extension and abduction of thumb • Musculus extensor pollicis longus •ORIGIN: ulna, membrana •INSERTION : distal phalanx of thumb •INNERVATION: n. radialis •FUNCTION: extension of thumb • Musculus extensor indicis •ORIGIN: ulna, membrana, most distally •INSERTION : dorsal aponeurosis of INNERVATION: n. radialis •FUNCTION: extension of 2nd finger • • Musculi manus Musculus abductor pollicis brevis •ORIGIN: eminentia carpi radialis •INSERTION: radial sesamoidal bone •INNERVATION: n. medianus •FUNCTION: abduction of thumb • Musculus flexor pollicis brevis •ORIGIN: eminentia carpi radialis •INSERTION: radial sesamoidal bone •INNERVATION: c. superficiale-n. medianus, c. profundum-n. ulnaris •FUNCTION: flexion of proximal phalanx and opposition of the thumb • •Musculus opponens pollicis •ORIGIN: eminentia carpi radialis •INSERTION: lateral margin of 1st metacarpal bone •INNERVATION: n. medianus •FUNCTION: opposition of the thumb • Musculus adductor pollicis •ORIGIN: c. obliquum-eminentia, c. transversum-palmar side of 3rd metacarpal bone •INSERTION:ulnar sesamoidal bone •INNERVATION: n. ulnaris •FUNCTION: adduction of the thumb • Musculus palmaris brevis •ORIGIN: ulnar margin of palmar aponeurosis •INSERTION: skin of hypothenar •INNERVATION: n. ulnaris •FUNCTION: transversal skin grooves • Musculus abductor digiti minimi •ORIGIN: os pisiforme •INSERTION: base of prox phalanx of 5th finger •INNERVATION: n. ulnaris •FUNCTION: abduction of 5th finger • Musculus flexor digiti minimi •ORIGIN: hamulus ossis hamati •INSERTION: base of prox phalanx of 5th finger •INNERVATION: n. ulnaris •FUNCTION: flexion of 5th finger • Musculus opponens digiti minimi •ORIGIN: eminentia carpi ulnaris •INSERTION: ulnar margin of 5th metacarpal bone •INNERVATION: n. ulnaris •FUNCTION: mild opposition of the 5th finger • Mm. interossei palmares I.-III. •ORIGIN: bodies of metacarpal bones •INSERTION: base of prox. phalanx and dorsal aponeurosis •INNERVATION: n. ulnaris •FUNCTION: adduction of fingers, flexion of proximal phalanges Musculi lumbricales •ORIGIN: tendons of m. flexor digitorum profundus •INSERTION: radial margin of base of prox. phalanx, dorsal aponeurosis of the 2nd-5th fingers •INNERVATION: I.and II.-n. medianus; III. and IV.- n. ulnaris •FUNCTION: finger inclining in radial direction, participation in proximal phalangeal flexion • Mm. interossei dorsales I.-IV. •ORIGIN: with two heads on bodies of adjacent metacaral bones •INSERTION: base of prox. phalanx ans dorsal aponeurosis •INNERVATION: n. ulnaris •FUNCTION: abduction of fingers, flexeion of prox. phalanx • FASCIA MANUS •Dorsal side -- fascia dorsalis manus interossea -- fascia dorsalis manus superficialis - - Palmar side •- fascia palmaris interossea - fascia palmaris superficialis • - aponeurosis palmaris • • • •CANALIS CARPI Thank you for your attention!