Exam 2: Elbow Joint

Question 1

What is the origin of the brachialis?

Answer 1

Lower 1/2 of anterior humerus

Question 2

What is the insertion of the brachialis?

Answer 2

Coronoid process

Question 3

What is the action of the brachialis?

Answer 3

Tue elbow flexion

Question 4

What is the origin of the brachioradialis?

Answer 4

Distal 2/3rds of lateral supracondylar ridge of humerus

Question 5

What is the insertion of the brachioradialis?

Answer 5

Styloid process of distal radius

Question 6

What is the action of the brachioradialis?

Answer 6

Elbow flexion, pronation from supinated to neutral, supination from pronated position to neutral

Question 7

What is the origin of the anconeus?

Answer 7

Posterior part of lateral condyle of humerus

Question 8

What is the insertion of the anconeus?

Answer 8

Posterior-lateral part of olecranon process, proximal 1/4th of lateral ulna

Question 9

What is the action of the anconeus?

Answer 9

Elbow extension

Question 10

What is the origin of the supinator?

Answer 10

Lateral epicondyle of humerus, proximal posterior end of ulna

Question 11

What is the insertion of the supinator?

Answer 11

Upper lateral 1/3rd of radius

Question 12

What is the action of the supinator?

Answer 12

Supination

Question 13

What is the origin of the pronator teres?

Answer 13

Distal part of medial supracondylar ridge of humerus, medial side of ulna

Question 14

What is the insertion of the pronator teres?

Answer 14

Middle 1/3rd of lateral side of radius

Question 15

What is the action of the pronator teres?

Answer 15

Pronation, weak elbow flexion

Question 16

What is the origin of the pronator quadratus?

Answer 16

Lower 1/4th of anterior ulna

Question 17

What is the insertion of the pronator quadratus?

Answer 17

Lower 1/4th of anterior radius

Question 18

What is the action of the pronator quadratus?

Answer 18

Pronation