OP Group 4 Flashcards
Brachioradialis - Origin
lateral supracondylar ridge of humerus
Brachioradialis - Insertion
styloid process of radius
Brachioradialis - Action
flexion of elbow
Brachioradialis - Innervation
radial nerve
Extensor Digitorum - Origin
lateral epicondyle of humerus (via common extensor tendon)
Extensor Digitorum - Insertion
phalanges 2-5 mid and distal
Extensor Digitorum - Action
extension of fingers 2-5 (MCP, PIP, DIP), extension of wrist
crosses elbow joint so weak elbow extension
Extensor Digitorum - Innervation
radial nerve
Extensor Carpi Radialis Longus - Origin
distal 1/3 of lateral supracondylar ridge
Extensor Carpi Radialis Longus - Insertion
base of 2nd metacarpal
Extensor Carpi Radialis Longus - Action
extension of wrist, radial flexion (abduction) of wrist
crosses elbow joint so weak flexion/supination of elbow
Extensor Carpi Radialis Longus - Innervation
radial nerve
Extensor Digiti Minimi - Origin
lateral epicondyle of humerus (common extensor tendon)
Extensor Digiti Minimi - Insertion
middle and distal phalanges of 5th digit (extensor expansion)
Extensor Digiti Minimi - Action
extension of little finger (5th digit)
extension of wrist and weak extension of elbow