OIAN Elbow Joint

Question 1

Brachialis

Answer 1

O: Humerus
I: Coronoid process and ulnar tuberosity
A: Elbow Flexion
N: Musculotaneous

Question 2

Biceps

Answer 2

O: Long Head: Supraglenoid tubercle of scapula
Short Head: Coracoid process of scapula
I: Radial tuberosity 
A: Elbow flexion, forearm supination
N: Musculotaneous

Question 3

Brachioradialis Muscle

Answer 3

O: Lateral supracondylar ridge on humerus
I: Styloid Process of the radius
A: Elbow flexion
N: Radial nerve

Question 4

Triceps

Answer 4

O: Long Head: Infraglenoid tubercle of scapula
Lateral Head: Inferior to greater tubercle
Medial Head: Posterior surface of humerus
I: Olecranon process of ulna
A: Elbow extension
N: Radial nerve

Question 5

Anconeous

Answer 5

O: Lateral Epicondyle of humerus
I: Lateral/inferior to olecranon process
A: Assists elbow extension
N: Radial

Question 6

Pronator Teres

Answer 6

O: Medial Epicondyle of humerus and coronoid process
I: Lateral aspect of radius at midpoint
A: Forearm pronation, assist in elbow flexion
N: Median

Question 7

Pronator Quadratus

Answer 7

O: Ulna
I: Radius
A: Pronation
N: Median

Question 8

Supinator

Answer 8

O: Lateral Epicondyle of humerus and adjacent ulna
I: Anterior surface of the proximal radius
A: Supination
N: Radial