Week 4 Muscle Quiz

Question 0

Infraspinatus

Answer 0

O. Infraspinous fossa of scapula
I. Greater tubercle of humerus
A. Shoulder lateral rotation, horizontal abduction
N. Suprascapular nerve

Question 1

Supraspinatus

Answer 1

O. Supraspinous fossa of the scapula
I. Greater tubercle of the humerus
A. Shoulder abduction
N. Suprascapular nerve

Question 2

Teres Minor

Answer 2

O. Axillary border of scapula
I. Greater tubercle of humerus
A. Shoulder lateral rotation, horizontal abduction
N. Axillary nerve

Question 3

Subscapularis

Answer 3

O. Subscapular fossa of the scapula
I. Lesser tubercle of the humerus
A. Shoulder medial rotation
N. Upper and lower subscapular nerve

Question 4

Biceps Brachii

Answer 4

O. Long head: supraglenoid tubercle of scapula
Short head: coracoid process of scapula
I. Radial tuberosity of radius
A. Elbow flexion, forearm supination
N. Musculocutaneous nerve

Question 5

Brachialis

Answer 5

O. Distal half of humerus, anterior surface
I. Coronoid process and ulnar tuberosity of the ulna
A. Elbow flexion
N. Musculocutaneous nerve

Question 6

Brachioradialis

Answer 6

O. Ridge superior to lateral epicondyle on the humerus
I. Styloid process of the radius
A. Elbow flexion
N. Radial nerve

Question 7

Triceps

Answer 7

O. Long head: infraglenoid tubercle of scapula
Lateral head: inferior to greater tubercle on posterior humerus
Medial head: posterior surface of humerus
I. Olecranon process of ulna
A. Elbow extension
N. Radial nerve

Question 8

Supinator

Answer 8

O. Lateral epicondyle of humerus and adjacent ulna
I. Anterior surface of the proximal radius
A. Forearm supination
N. Radial nerve

Question 9

Pronator Teres

Answer 9

O. Medial epicondyle of humerus and coronoid process of ulna
I. Lateral aspect of radius at its midpoint
A. Forearm pronation, assistive in elbow flexion
N. Median nerve

Question 10

Pronator Quadratus

Answer 10

O. Distal one-fourth of ulna
I. Distal one-fourth of radius
A. Forearm pronation
N. Median nerve