Musculature of the forearm Flashcards
Muscles in Anterior compartment
PT FCR PL FDS FCU
both flexor and extensor
pronator teres, flexor carpi radialis, palmaris longus, flexor digitorum superficialis and flexor carpi ulnaris
what is the pronator teres origin insertion and action
O = The medial epicondyle
I = Lateral surface of radius
A = pronation
What is the Flexor carpi radialis Origin insertion and action
O = Medial epicondyle
I = Bases of metacarpal bones
A = wrist flexion and radial deviation
What is the palmaris longus Origin insertion and action
O = Medial epicondyle of humerus
I = Flexor retinaculum
A = Wrist joint: Wrist flexion
What is the flexor digitorum superficialis Origin insertion and action
O = medical epicondyle
I = Sides of middle phalanges
A = Finder flexion
what is the flexor carpi ulnaris origin insertion and action
O = medical epicondyle
I = carpal bones
A = wrist flexion and ulnar deviation
the 4 superficial muscles of the forearm
PT FCR PL FCU
pronator Teres
Flexor carpi radialis
Palamaris longus
flexor carpi ulnaris
1 intermediate layer of the forearm
Flexor digitorum superficialis
the deep group of the forearm 3 muscles
FDP FPL PQ
- flexor digitorum prolongus
- flexor pollicis longus
- pronator quadratus
what are the posterior forearm muscles (6)
B ECRL ECRB ED ECU EDM
brachioradialis, extensor carpi radialis longus, extensor carpi radialis brevis, extensor digitorum, extensor carpi ulnaris and extensor digiti minimi.
What is the brachioradialis origin insertion and action
O = Lateral supracondylar ridge of humerus
I = (Proximal to) styloid process of radius
A = FORARM FLEXION
What is the Extensor carpi radialis longus orgin inserton and action
O = Lateral supracondylar ridge of humerus
I = Posterior aspect of base of metacarpal
A = Hand extension, hand abduction (radial deviation)
What is the Extensor carpi radialis BREVIS orgin inserton and action
O = Lateral epicondyle of humerus (common extensor tendon)
Insertion = Posterior aspect of base of metacarpal bone 3
Action = Wrist joints: Hand extension, hand abduction (radial deviation)
what is the extensor digitorum origin insertion and action
Lateral epicondyle of humerus (common extensor tendon)
Insertion= Extensor expansions of digits 2-5
Action= finger extension
what is the extensor carpi ulnaris origin insertion and action
Origin= Lateral epicondyle of humerus, posterior border of ulna
Insertion= Base of metacarpal bone 5
Action= Wrist joint: Hand extension and adduction
what is the extensor digitum minimi origin insertion and action
O = distal humus
I = fifth digit
A = extends little finger
what is the deep posterior forearm muscles
S APL EPB EPL EI
supinator, abductor pollicis longus, extensor pollicis brevis, extensor pollicis longus and Extensor indicis
what is the supinator origin insertion and action
O = Lateral epicondyle of humerus,
Insertion proximal third of radius
ActionProximal radioulnar joint: Forearm supination
what is the Abductor pollicis longus origin insertion and action
O = interosseus membrane
Insertion= Base of metacarpal bone 1, (trapezium bone)
Action= Hand extension, Thumb abduction and extension
what is the extensor pollicis brevis origin insertion and action
O= Posterior surface of distal third of radius and interosseus membrane
Insertion= Posterior aspect of base of proximal phalanx of thumb
Action= Carpometacarpal and metacarpophalangeal joint 1: Thumb extension
what is the extensor pollicis longus origin insertion and action
O = Posterior surface of middle third of ulna and interosseus membrane
Insertion= Posterior aspect of base of distal phalanx of thumb
Action= Weak hand extension, Thumb extension
what is the Extensor indicis origin insertion and action
O = Pinterosseus membrane
Insertion= Extensor expansion of index finger
Action=Weak hand extension, Finger extension
