Elbow, Forearm, Wrist Muscles

Question 1

Origin of the Anconeus?

Answer 1

Lateral Epicondyle of the humerus

Question 2

Insertion of the Anconeus?

Answer 2

• Olecranon
• Superior/Posterior surface of Ulna

Question 3

Action of the Anconeus

Answer 3

• Assists Triceps in extension of the elbow
• Stabilizes elbow joint

Question 4

Origin(3) of the Supinator?

Answer 4

• Lateral Epicondyle of humerus
• Supinator fossa and crest of Ulna
• Annular ligament of elbow joint

Question 5

Insertion of the Supinator?

Answer 5

Lateral/Posterior/Anterior surface of proximal 1/3 of radius

**Wraps around top of radius

Question 6

Action of Supinator?

Answer 6

Supinates forearm

Question 7

Origin of the Pronator Quadratus?

Answer 7

Distal 1/4 of anterior surface of ulna

Question 8

Insertion of Pronator Quadratus?

Answer 8

Distal 1/4 of anterior surface of Radius

Question 9

Action of Pronator Quadratus

Answer 9

• Pronates forearm
• Deep fibers bind radius and ulna together

Question 10

Origin of the Pronator Teres?

Answer 10

• Medial Epicondyle of Humerus

Question 11

Insertion of Pronator Teres?

Answer 11

Middle/Lateral surface of the radius

Question 12

Origin of the Flexor Carpi Radialis?

Answer 12

Medial Epicondyle of the Humerus

Question 13

Insertion of the Flexor Carpi Radialis?

Answer 13

• Base of 2nd Metacarpal

**Not the base of thumb

Question 14

Action of Flexor Carpi Radialis?

Answer 14

• Flexes wrist
• Radially deviates wrist **

Question 15

What is the origin of the Flexor Carpi Ulnaris (2 heads)?

Answer 15

Humeral Head
- medial epicondyle

Ulnar Head
- Olecranon and posterior border of the ulnar

Question 16

What is the action of the Flexor Carpi Ulnaris?

Answer 16

• Flexion of wrist
• Ulnar deviation of wrist

Question 16

What is the insertion of the Flexor Carpi Ulnaris?

Answer 16

• Hook of the Hamate
• 5th Metacarpal bone`

Question 16

What is the origin of the Palmaris Longus?

Answer 16

• Medial epicondyle of humerus

Question 16

What is the origin of the Extensor Carpi Radialis Longus?

Answer 16

Lateral SUPRACONDYLAR ridge

***Think long - goes more superiorly up the arm

Question 17

What is the insertion of the Palmaris Longus?

Answer 17

• Distal half of the flexor retinaculum
• Palmar aponeurosis

Question 17

What is the action of the Palmaris Longus?

Answer 17

• Flexes wrist
• tightens palmar aponeurosis

Question 17

What is the insertion of the Extensor Carpi Radialis Longus?

Answer 17

Base of second metacarpal

Question 18

What is the action of Extensor Carpi Radialis Longus?

Answer 18

• Extend wrist
• Radially deviate wrist

Question 19

What is the origin of Extensor Carpi Radialis Brevis?

Answer 19

• Lateral epicondyle of humerus

Question 20

What is the insertion of Extensor Carpi Radialis Brevis?

Answer 20

Base of THIRD metacarpal

Question 21

What is the action of Extensor Carpi Radialis Brevis?

Answer 21

• Extend wrist
• Radially deviate wrist

Question 22

What is the origin of Extensor Carpi Ulnaris?

Answer 22

• Lateral epicondyle of humerus
• Posterior border of ulna

Question 23

What is the insertion of Extensor Carpi Ulnaris?

Answer 23

Base of 5th Metacarpal

Question 24

What is the action of Extensor Carpi Ulnaris?

Answer 24

• Extends wrist
• Ulnar deviation of wrist