Muscles Flashcards
Flexor Carpi Ulnaris Origin
Humeral head:
common tendon from medial epicondyle of humerus
Ulnar hea:
posterior surface of proximal 2/3 of ulna
Flexor Carpi Ulnaris insertion
Pisiform, hook of hamate and base of ulna
Flexor Carpi Ulnaris actions
flex the radiocarpal
adduct radiocarpal
assist to flex the humeroulnar joint
Flexor carpi Ulnaris innervation
ulnar nerve
flexor Carpi radialis origin
common flexor tendon from medial epicondyle of humerus
flexor Carpi radialis insertion
bases of 2nd and 3rd metacarpals
flexor Carpi radialis actions
flex the radiocarpal joint
abduct the radiocarpal joint
may assist to flex the humeroulnar joint
flexor Carpi radialis innervation
median nerve
Palmaris longus origin
common flexor tendon from medial epicondyle of humerus
palmaris longus insertion
flexor retinaculum and palmar aponeurosis
palmaris longus actions
tense the palmar fascia
flex the radiocarpal joint
may assist to flex the humeroulnar joint
palmaris longus innervation
median nerve
Flexor digitorum superficialis origin
common flexor tendon from medial epicondyle of humerus, ulnar collateral ligament, coronoid process of the ulna, interosseous membrane and proximal shaft of radius
flexor digitorum superficialis insertion
sides of middle phalanges of 2nd - 5th fingers
flexor digitorum superficialis actions
flex 2nd-5th fingers at the metacarpophalangeal and proximal interphalangeal joints
flex radiocarpal joint
flexor digitorum superficialis innervation
median nerve
flexor digitorum profundus origin
anterior and medial surface of proximal 3/4 of ulna
flexor digitorum profundus insertion
bases of distal phalanges, palmar surface of 2nd through 5th fingers
flexor digitorum profundus actions
flex the 2nd -5th fingers at mtp and distal itp joints
assist to flex the radiocarpal joints
flexor digitorum profundus innervation
fingers 2/3- median
fingers 4/5- ulnar
pronator quadratus origin
medial anterior surface of the distal ulna
pronator quadratus insertion
lateral anterior surface of the distal radius
pronator quadratus actions
pronates the radioulnar joints
pronator quadratus innervation
median nerve
brachialis origin
distal 1/2 of anterior surface of the humerus
brachialis insertion
tuberosity and the coronoid process of the ulna
brachialis actions
flex the humeroulnar joint
brachialis innervation
musculocutaneous, small branch from radial
pronator teres origin
common flexor tendon from medial epicondyle of the humerus and coronoid process of the ulna
pronator teres insertion
middle of lateral surface of the radius
pronator teres actions
pronate the radioulnar joint
assist to flex the humeroulnar joint
pronator teres innervation
median
extensors Carpi radialis longus origin
distal 1/3 of lateral supracondylar ridge of the humerus
extensors Carpi radialis longus insertion
base of 2nd metacarpal
extensors Carpi radialis longus actions
extend the radiocarpal joint
abduct the radiocarpal joint
assist to flex the humeroulnar joint
extensors Carpi radialis longus innervation
radial
extensors Carpi radialis brevis origin
common extensor tendon from the lateral epicondyle of the humerus
extensors Carpi radialis brevis insertion
base of 3rd metacarpal
extensors Carpi radialis brevis actions
extend the radiocarpal
abduct radiocarpal joint
assist to flex the humeroulnar joint
supinator origin
lateral epicondyle of the humerus, radial collateral ligament, annular ligament and supinator crest of the ulna
supinator insertion
anterior lateral surface of proximal 1/3 of radial shaft
supinator actions
supinate the radioulnar joints
supinator innervation
radial
abductor pollicis longus origin
posterior surface of radius and ulna and interosseous membrane
abductor pollicis longus insertion
base of 1st metacarpal
abductor pollicis longus actions
abduct the thumb at carpometacarpal joint
extend the thumb at the carpometacarpal joint
abduct the radiocarpal joint
Deltoid origin
lateral 1/3 of clavicle acromion and spine of scapula
deltoid insertion
deltoid tuberosity
deltoid actions
all: abduct shoulder
anterior:
flex, medially rotate horizontally adduct
posterior:
extends, laterally rotates and horizontally abducts
deltoid innervation
axillary nerve
biceps brachii origin
short head: coracoid process of the scapula
Long head: supragelnoid tubercle of the scapula
biceps brachii insertion
tuberosity of the radius and aponeurosis of the biceps brachiii
biceps brachiii actions
flex the gh joint
flex elbow humeroulnar joint
supinate the forearm at radioulnar joints
biceps brachii innervation
musculocutaneous nerve
triceps brachii origin
Long head: infraglenoid tubercle of scapula
Lateral: posterior 1/2 of proximal surface of humerus
medial: posterior 1/2 of distal surface of humerus
triceps brachii insertion
olecranon process of the ulna
triceps brachii actions
extend the humeroulnar joint
long head: adducts and extend the glenohumeral joint
triceps brachii innervation
radial nerve
brachioradialis origin
proximal 2/3 of lateral supracondylar ridge of the humerus
brachioradialis insertion
styloid process of the radius
brachioradialis actions
flexes the elbow at humeroulnar joint
assist to pornate or supinate when these movements are resisted.
brachioradialis innervation
radial nerve
Extensor pollicis longus
radial nerev
posterior surface of the ulna and interosseous membrane
base of distal phalanx of thumb
extend thumb, abduct wrist
extensor pollicis brevis
radial
posterior surface of radius and interosseous membrane
base of proximal phalanx of thumb
extend thumb, abduct wrist
flexor pollicis longus
median
anterior surface of radius and interosseous membrane
base of sital phalanx of thumb
flex thumb, assist to flex wrist
abductor pollicis brevis
median nerve
flexor retinaculum, trapezium and scophoid tubercle
base of proximal phalanx of thumb
abduct thumb, assist opposition of thumb
