Forearm & Hand

Question 1

Origin and Insertion of brachioradialis

Answer 1

Origin: proximal 2/3 of the lateral supracondylar ridge of humerus
Insertion: styloid process of radius

Question 2

Actions of the brachioradialis

Answer 2

flex the elbow, assist to pronate and supinate the forearm when the movements are resisted

Question 3

Origin and Insertion of Anconeus

Answer 3

Origin: lateral epicondyle of the humerus
Insertion: olecranon process and posterior proximal surface of ulna

Question 4

Action of anconeus

Answer 4

extend the elbow

Question 5

Origin and Insertion of pronator teres

Answer 5

Origin: common flexor tendon from medial epicondyle and coronoid process of the ulna
Insertion: middle of lateral surface of the radius

Question 6

Actions of pronator teres

Answer 6

pronate the forearm; assist to flex the elbow

Question 7

Origin and Insertion of pronator quadratus

Answer 7

Origin: medial, anterior surface of distal ulna
Insertion: ;lateral, anterior surface of distal radius

Question 8

Action of pronator quadratus

Answer 8

pronate the forearm

Question 9

Origin and Insertion of supinator

Answer 9

Origin: lateral epicondyle of humerus, radial collateral ligament, annular ligament, and supinator crest of the ulna
Insertion: anterior, lateral surface of proximal 1/3 of radial shaft

Question 10

Action of supinator

Answer 10

supinate the forearm