Muscles of the upper limb (forearm and hand) Flashcards
Pronator teres origin
Medial epicondyle of humerus & proximal ulna
Pronator teres insertion
Lateral radius
Pronator teres innervation
Median Nerve
Pronator teres Function
Pronates forearm at elbow, assists in flexion at elbow
Flexor carpi radialis origin
Medial epicondyle of humerus
Flexor carpi radialis insertion
Metacarpal 2
Flexor carpi radialis innervation
Median Nerve
Flexor carpi radialis function
Flexes and abducts hand at wrist
Palmaris longus origin
Medial epicondyle of humerus
Palmaris longus insertion
Palmar aponeurosis & flexor retinaculum of hand
Palmaris longus innervation
Median Nerve
Palmaris longus function
Flexes hand at wrist, tenses palmar aponeurosis
Flexor carpi ulnaris origin
Medial epicondyle of humerus
Flexor carpi ulnaris insertion
Pisiform, hamate, metacarpal 5
Flexor carpi ulnaris innervation
Ulnar nerve
Flexor carpi ulnaris function
Flexes and adducts hand at wrist
Flexor digitorum superficialis origin
Medial epicondyle of humerus, coronoid process of ulna, anterior shaft of radius
Flexor digitorum superficialis insertion
Middle phalanges of digits 2-5
Flexor digitorum superficialis innervation
Median Nerve
Flexor digitorum superficialis function
Flexes phalanges of digits 2-5 at MP and PIP
Flexor digitorum profundus origin
Anterior shaft of ulna, interosseous membrane
Flexor digitorum profundus insertion
Distal phalanges of digits 2-5
Flexor digitorum profundus innervation
Anterior interosseous nerve (bellies to digits 2 & 3), ulnar nerve (bellies to digits 4 & 5)
Flexor digitorum profundus function
Flexes phalanges at DIP (Distal interphalangeal) joint
Flexor pollicis longus origin
Anterior surface of radius, interosseous membrane
Flexor pollicis longus insertion
Distal phalanx of pollex (thumb)
Flexor pollicis longus innervation
Anterior interosseous nerve
Flexor pollicis longus function
flexes pollex (thumb)
Pronator quadratus origin
Anterior surface of distal ulna
Pronator quadratus insertion
Anterior surface of distal radius
Pronator quadratus innervation
Anterior interosseous nerve
Pronator quadratus function
Pronates forearm at elbow
Brachioradialis origin
Proximal to lateral epicondyle of humerus
Brachioradialis insertion
Styloid process of radius
Brachioradialis innervation
Radial nerve
Brachioradialis function
Flexes forearm at elbow when partially pronated
Extensor carpi radialis longus origin
Proximal to lateral epicondyle of humerus (supraepicondylar ridge)
Extensor carpi radialis longus insertion
Dorsal side of proximal metacarpal 2
Extensor carpi radialis longus innervation
Radial Nerve
Extensor carpi radialis longus function
Extend and abduct hand at wrist
Extensor carpi radialis brevis origin
Lateral epicondyle of humerus
Extensor carpi radialis brevis insertion
Dorsal side of proximal metacarpal 3
Extensor carpi radialis brevis innervation
Posterior interosseous nerve
Extensor carpi radialis brevis function
Extend and abduct hand at wrist
Extensor digitorum origin
Lateral epicondyle of humerus
Extensor digitorum insertion
Extensor sheath covering digits 2-5
Extensor digitorum innervation
Posterior interosseous nerve
Extensor digitorum function
Extends digits 2-5 at MP, PIP, DIP
Extensor digiti minimi origin
Lateral epicondyle of humerus
Extensor digiti minimi insertion
Extensor sheath covering digit 5
Extensor digiti minimi innervation
Posterior interosseous nerve
Extensor digiti minimi function
Extends digit 5 at MP
Extensor carpi ulnaris origin
Lateral epicondyle of humerus, posterior side of ulna
Extensor carpi ulnaris insertion
Dorsal aspect of the proximal metacarpal 5
Extensor carpi ulnaris innervation
Posterior interosseous nerve
Extensor carpi ulnaris function
Extends and adducts hand at wrist
Supinator origin
Lateral epicondyle of humerus, proximal ulna
Supinator insertion
Proximolateral radius
Supinator innervation
Deep branch of the radial nerve
Supinator function
Supinates forearm at elbow
Extensor indicis origin
Posterior side of distal ulna and interosseous membrane
Extensor indicis insertion
Extensor expansion of digit 2
Extensor indicis innervation
Posterior interosseous nerve
Extensor indicis function
Extends digit 2