Muscles of the upper extremity Musculi humeri Musculus subscapularis ORIGIN: facies costalis scapulae (fossa subscapularis) INSERTION: tuberculum minus humeri INNERVATION: n. subscapularis FUNCTION: humeral pronation, adduction •ORIGIN: fossa supraspinata •INSERTION : tuberculum majus humeri •INNERVATION: n. suprascapularis •FUNCTION: humeral supination and abduction • Musculus supraspinatus Musculus infraspinatus •ORIGIN: fossa infraspinata •INSERTION : tuberculum majus humeri •INNERVATION: n. suprascapularis •FUNCTION: humeral supination • Musculus teres minor •ORIGIN: margo lateralis scapulae •INSERTION : tuberculum majus humeri •INNERVATION: n. axillaris •FUNCTION: humeral supination • Musculus teres major •ORIGIN: angulus inferior scapulae •INSERTION : crista tuberculi minoris •INNERVATION: n. subscapularis •FUNCTION: adduction, extension and humeral pronation • •Insertions of m. supraspinatus, infraspinatus, teres minor and subscapularis into the articular capsule of shoulder joint– ROTATOR CUFF Musculus deltoideus •ORIGIN: clavicula, acromion, spina scapulae •INSERTION : tuberositas deltoidea humeri •INNERVATION: n. axillaris •FUNCTION: abduction, anteflexion, dorsiflexion in shoulder joint • Musculi brachii Musculus brachialis •ORIGIN: distal half of humeral body •INSERTION : tuberositas ulnae •INNERVATION: n. musculocutaneus •FUNCTION: flexion of forearm •It is covered by biceps • Musculus coracobrachialis •ORIGIN: processus coracoideus scapulae •INSERTION: internal side of corpus humeri •INNERVATION: n. musculocutaneus •FUNCTION: adduction and partial anteflexion • • Musculus biceps brachii •ORIGIN: caput longum-tuberculum supraglenoidale scapulae, caput breve-processus coracoideus scapulae •INSERTION : tuberositas radii, aponeurosis m. bicipitis brachii (lacertus fibrosus) •INNERVATION: n. musculocutaneus •FUNCTION: flexion of forearm in supination, c. longum-abduction of arm, c. breve- anteflexion and adduction • • Musculus triceps brachii •ORIGIN: caput longum-tuberculum infraglenoidale scapulae, caput laterale-proximally from sulcus nervi radialis, caput mediale-distally from sulcus nervi radialis •INSERTION : olecranon ulnae •INNERVATION: n. radialis •FUNCTION: extension of forearm, c. longum-adduction of arm • Musculus anconaeus •ORIGIN: epicondylus lateralis humeri •Ú INSERTION : olecranon ulnae •INNERVATION: n. radialis •FUNCTION: extension of forearm • Foramen humerotricipitale Foramen omotricipitale Fascia brachii •It is proximal continuation of fascia deltoidea and distally continues as fascia antebrachii •septum intermusculare brachii mediale et laterale- they pull fascia into the depth → sulcus m. bicipitis lateralis et medialis Fossa axillaris •Between lateral side of thorax and proximal part of arm • •Anterior wall •- insertion of m. pectoralis major •- plica axillaris anterior •Medial wall •- lateral wall of thorax •- m. serratus anterior •Posterior wall •- insertion of m. latissimus dorsi •- plica axillaris posterior •Lateral wall •- humerus- caput breve m. biceps brachii • m. coracobrachialis 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!