Elbow, Forearm, Wrist Muscles Flashcards
Origin of the Anconeus?
Lateral Epicondyle of the humerus
Insertion of the Anconeus?
- Olecranon
- Superior/Posterior surface of Ulna
Action of the Anconeus
- Assists Triceps in extension of the elbow
- Stabilizes elbow joint
Origin(3) of the Supinator?
- Lateral Epicondyle of humerus
- Supinator fossa and crest of Ulna
- Annular ligament of elbow joint
Insertion of the Supinator?
Lateral/Posterior/Anterior surface of proximal 1/3 of radius
**Wraps around top of radius
Action of Supinator?
Supinates forearm
Origin of the Pronator Quadratus?
Distal 1/4 of anterior surface of ulna
Insertion of Pronator Quadratus?
Distal 1/4 of anterior surface of Radius
Action of Pronator Quadratus
- Pronates forearm
- Deep fibers bind radius and ulna together
Origin of the Pronator Teres?
- Medial Epicondyle of Humerus
Insertion of Pronator Teres?
Middle/Lateral surface of the radius
Origin of the Flexor Carpi Radialis?
Medial Epicondyle of the Humerus
Insertion of the Flexor Carpi Radialis?
- Base of 2nd Metacarpal
**Not the base of thumb
Action of Flexor Carpi Radialis?
- Flexes wrist
- Radially deviates wrist **
What is the origin of the Flexor Carpi Ulnaris (2 heads)?
Humeral Head
- medial epicondyle
Ulnar Head
- Olecranon and posterior border of the ulnar
What is the action of the Flexor Carpi Ulnaris?
- Flexion of wrist
- Ulnar deviation of wrist
What is the insertion of the Flexor Carpi Ulnaris?
- Hook of the Hamate
- 5th Metacarpal bone`
What is the origin of the Palmaris Longus?
- Medial epicondyle of humerus
What is the origin of the Extensor Carpi Radialis Longus?
Lateral SUPRACONDYLAR ridge
***Think long - goes more superiorly up the arm
What is the insertion of the Palmaris Longus?
- Distal half of the flexor retinaculum
- Palmar aponeurosis
What is the action of the Palmaris Longus?
- Flexes wrist
- tightens palmar aponeurosis
What is the insertion of the Extensor Carpi Radialis Longus?
Base of second metacarpal
What is the action of Extensor Carpi Radialis Longus?
- Extend wrist
- Radially deviate wrist
What is the origin of Extensor Carpi Radialis Brevis?
- Lateral epicondyle of humerus
What is the insertion of Extensor Carpi Radialis Brevis?
Base of THIRD metacarpal
What is the action of Extensor Carpi Radialis Brevis?
- Extend wrist
- Radially deviate wrist
What is the origin of Extensor Carpi Ulnaris?
- Lateral epicondyle of humerus
- Posterior border of ulna
What is the insertion of Extensor Carpi Ulnaris?
Base of 5th Metacarpal
What is the action of Extensor Carpi Ulnaris?
- Extends wrist
- Ulnar deviation of wrist
