Forearm muscles Flashcards
(24 cards)
Name superficial pronatory-flexor muscles
Pronator teres
Flexor carpi radialis
Flexor carpi ulnaris
Palmaris Longus
Name intermediate pronatory-flexor muscle
Flexor digitorum superficialis
Name Deep pronatory-flexor muscles
Flexor pollicis longus
Flexor digitorum profondus
Pronator quadratus
Origin and insertion pronator teres
Origin: Medial epicondyle of humerus and coronoid process
Insertion: Lateral surface of radius
Action: pronates
Origin and insertion Carpi ulnaris
Origin: Medial epicondyle of humerus and olecranon
Insertion: Pisiform, hook of hamate and into base of 5th metacarpal
Action: flexes wrist and ulnar deviation
origin and insertion flexor carpi radialis
Origin: Medial epicondyle of humerus
Insertion: base of 2nd-3rd metacarpal
Action: Flexes and radial deviation
Flexor digitorum superficialis
Origin: Medial epicondyle of humerus, coronoid process and anterior surface of radius
Insertion: Middle phalanges digits 2-5
Action: Flexes PIP, assists wrist flexion + mcp flexion
Flexor pollicis longus
Origin: Anterior surface of radius
Insertion: Base of distal phalange of thumn
Action: thumb flexion
Flexor digitorum profondus
Origin: medial and anterior surface of Ulna
Insertion: Base of distal phalanges digits 2-5
Name the muscles that attach to the common flexor origin
Flexor carpi radialis
Flexor carpi Ulnaris
Palmaris longus
Flexor digitorum superficicalis
Pronator teres
Three supinatory-extensor muscles insert onto the carpi bones:
Extensor carpi radialis longus
Extensor carpi radialis brevis
Extensor carpi ulnaris
Three supinatory-extensor muscles insert onto the pollicis (thumb)
Abductor pollicis longus
Extensor pollicis longus
Extensor pollicis brevis
Three supinatory-extensor muscles insert onto the digits 2- 5 (fingers 2-5):
Extensor digiti communis
Extensor digiti minimi
Extensor indices
Three supinatory-extensor muscles have other functions i.e. elbow extension
and elbow flexion
bracioradialis
Supinator
Aconeous
Name the muscles make up the common extensor origin
Extensor carpi radialis brevis
Digiti minimi extensor
Extensor carpi ulnaris
Anconeus
Origin and insertion extensor carpi ulnaris
Origin: Lateral epicondyle of humerus + posterior suface of ulna
Insertion: Base of 5th Metacarpal
Action: Wrist extension + ulnar deviation
Origin and insertion of extensor carpi radialis longus
Origin: lateral supracondylar ridge of the humerus
Insertion: base of 2nd metacarpal
Action: extends wrist and radial deviation
Origin and insertion extensor carpi radialis brevis
Origin: lateral epicondyle of humerus
Insertion: base of 3rd metacarpal
Action: Extension and radial deviation
Origin and insertion of extensor digitorum communis
Origin: Lateral epicondyle of humerus
insertion: extensor expanison of digits 2-5
action: Extends the wrist and fingers
Origin and insertion of extensor digiti minimi
Origin: lateral epicondyle of humerus
Insertion: extensor expansion of 5th digit
Action: extends the little finger
Origin and insertion of the extensor indices
Origin: posterior surface of the ulna
Insertion: extensor expansion of 2nd digit
Action: extends index finger
Origin and insertion of abductor pollicis longus
Origin: posterior surface of ulna and radius
Insertion: Base of 1st Metacarapal
Action: abduction and extends thumb at 1st CMC
Origin and insertion extensor pollicis brevis
ORIGIN: Posterior surface of radius
Insertion: base of proximal phalanx of the thumb
Action: extends the thumb at the MCP joint
Origin and insertion extensor pollicis longus
Origin : Posterior surface of the ulna
Insertion: base of distal phalanx of the thumb
Action: extends thumb at IP joint
