Module 6 Muscles Flashcards
Brachialis - innervation
musculocutaneous and small branch of radial nerve
brachialis - origin
the distal 1/2 of the anterior surface of the humerus
brachialis - insertion
tuberosity and coronoid process of the ulna
brachialis - actions
FLEX the elbow at the humeroulnar joint
pronator teres - innervation
median nerve
pronator teres - origin
common flexor tendon from medial epicondyle of humerus and coronoid process of the ulna
pronator teres - insertion
middle of the lateral surface of the radius
pronator teres - actions
PRONATE the forearm at the radioulnar joints
assist to FLEX the elbow at the humeroulnar joint
flexor carpi ulnaris - innervation
ulnar nerve
flexor carpi ulnaris - origin
humeral head: common flexor tendon from medial epicondyle of humerus
ulnar head: posterior surface of proximal 2/3 of ulna
flexor carpi ulnaris - insertion
pisiform
hook of hamate
base of 5th metacarpal
flexor carpi ulnaris - actions
FLEX and ADDUCT the wrist at the radiocarpal joint
assist to FLEX the elbow at humeroulnar joint
flexor carpi radialis - innervation
median nerve
flexor carpi radialis - origin
common flexor tendon from medial epicondyle of the humerus
flexor carpi radialis - insertion
bases of the second and third metacarpals
flexor carpi radialis - actions
FLEX and ABDUCT the wrist at radiocarpal joint
may assist to FLEX the elbow at the humeroulnar joint
flexor digitorum superficialis - innervation
median nerve
flexor digitorum superficialis - origin
- common flexor tendon from medial epicondyle of the humerus
- ulnar collateral ligament
- coronoid process of the ulna
- interosseous membrane
- proximal shaft of the radius
flexor digitorum superficialis - insertion
side of the middle phalanges of 2nd-5th fingers
flexor digitorum superficialis - actions
FLEX 2nd-5th fingers
FLEX the wrist at radiocarpal joint
flexor digitorum profundus - innervation
median and ulnar nerves
flexor digitorum profundus - origin
anterior and medial surfaces of proximal 3/4 of ulna
flexor digitorum profundus - insertion
bases of distal phalanges,
palmar surface of 2nd-5th fingers
flexor digitorum profundus - actions
FLEX 2nd-5th fingers at metacarpophalangeal and distal interphalangeal joints
assist to FLEX the wrist at radiocarpal joint
palmaris longus - innervation
median nerve
palmaris longus - origin
common flexor tendon from medial epicondyle of humerus
palmaris longus - insertion
flexor retinaculum
palmar aponeurosis
palmaris longus - actions
TENSE the palmar fascia
FLEX the wrist at radiocarpal joint
may assist to FLEX the elbow at humeroulnar joint
pronator quadratus - innervation
median nerve
pronator quadratus - origin
medial, anterior surface of distal ulna
pronator quadratus - insertion
lateral, anterior surface of distal radius
pronator quadratus - actions
PRONATION of the forearm at radioulnar joints
extensor carpi radialis longus (ECRL2) - innervation
radial nerve
extensor carpi radialis longus (ECRL2) - origin
distal 1/3 of lateral supracondylar ridge of the humerus
extensor carpi radialis longus (ECRL2) - insertion
base of the 2nd metacarpal
extensor carpi radialis longus (ECRL2) - actions
EXTENDS and ABDUCTS the wrist at radiocarpal joint
assist to FLEX the elbow at humeroulnar joint
extensor carpi radialis brevis (ECRB3) - innervation
radial nerve
extensor carpi radialis brevis (ECRB3) - origin
common extensor tendon from the lateral epicondyle of the humerus
extensor carpi radialis brevis (ECRB3) - insertion
base of 3rd metacarpal
extensor carpi radialis brevis (ECRB3) - actions
ABDUCT and EXTEND the wrist at radiocarpal joint
assist to FLEX the elbow at humeroulnar joint
supinator - innervation
radial nerve
supinator - origin
- lateral epicondyle of the humerus
- radial collateral ligament
- annular ligament
- supinator crest of the ulna
supinator - insertion
anterior, lateral surface of proximal 1/3 of radial shaft
supinator - actions
SUPINATES the forearm at the radioulnar joints
ABductor pollicis longus - innervation
radial nerve
ABductor pollicis longus - origin
posterior surface of radius, ulna, and interosseous membrane