Lab Performance Exam #3

Question 1

Biceps Brachii

Answer 1

O- long head - supraglenoid tubercle of scapula
Short head - coracoid process of scapula
I- radial tuberosity of radius
A- shoulder flexion, elbow flexion, and forearm supination

Question 2

Triceps

Answer 2

O- Long head: infraglenoid tubercle of scapula
Lateral head: posterior humerus
Medial head: posterior humerus
I- Olecranon process of ulna
A- shoulder and elbow extension

Question 3

Flexor carpi radialis

Answer 3

O- medial side of the humerus
I- base of fingers
A- wrist flexion and radial deviation

Question 4

Extensor carpi ulnaris

Answer 4

O- lateral side of humerus
I- base of pinky
A- wrist extension and ulnar deviation

Question 5

Flexor pollicis longus

Answer 5

O- radius, anterior surface
I- tip of thumb
A- flexes the thumb

Question 6

Extensor pollicis longus

Answer 6

O- posterior middle portions of ulna
I- tip of thumb
A- extends the thumb

Question 7

Flexor digitorum superficialis

Answer 7

O- three points of contact on posterior of arm
I- 4 fingers
A- finger and wrist flexion

Question 8

Extensor digitorum

Answer 8

O- lateral side of the humerus
I- tip of 4 fingers
A- extends fingers and wrist

Question 9

Abductor pollicis longus

Answer 9

O- posterior middle portions of radius, ulna, and interosseus membrane
I- base of the thumb
A- abducts the thumb