Elbow

Question 1

Brachialis muscle

Answer 1

Distal half of humerus, anterior surface

Coronoid process and ulnar tuberosity of ulna

Elbow flexion

Musculocutaneous nerve (C5,C6)

Question 2

Biceps

Answer 2

Long head: supraglenoid tubercle of scapula

Short head: coracoid process of scapula

Radial tuberosity

Elbow flexion, forearm supination

Musculocutaneous nerve (C5, C6)

Question 3

Brachioradialis

Answer 3

Lateral super condyle ridge on the humerus

Styloid process of the radius

Elbow flexion

Radial nerve (C5,C6)

Question 4

Triceps

Answer 4

Long head: infraglenoid tubercle of scapula

Lateral head: inferior to greater tubercle on posterior Humerus

Medial head: posterior surface of humerus

Olecranon process of ulna

Elbow extension

Radial nerve (C6, C7, C8)

Question 5

Anconeus muscle

Answer 5

Lateral epicondyle of humerus

Lateral and inferior to olecranon process of ulna

Not a prime mover in any joint action, assists in elbow flexion

Radial nerve (C6, C7, C8)

Question 6

Pronator teres

Answer 6

Medial epicondyle of humerus and coronoid process of ulna

Lateral aspect of radius at its midpoint

Forearm probation, assistive in elbow flexion

Median nerve (C6, C7)

Question 7

Pronator Quadratus

Answer 7

Distal one-fourth of ulna

Distal one-fourth of radius

Forearm pronation

Median nerve (C8, T1)

Question 8

Supinator muscle

Answer 8

Lateral epicondyle of humerus and adjacent ulna

Anterior surface of the proximal radius

Forearm supination

Radial nerve (C6)