Lab Exam 1

Question 0

What is innervating the subscapularis?

Answer 0

Subscapular nerve

Question 1

What is innervating the teres major?

Answer 1

Subscapular nerve

Question 2

Where is the supinator located?

Answer 2

On the radial side up near elbow

Question 3

Where do all flexors originate?

Answer 3

Medial epicondyle

Question 4

Where does the triceps brachii insert?

Answer 4

Olecranon process - elbow, end of the ulna

Question 5

What is the origin of the long head of the triceps?

Answer 5

Infraglenoid tubercle of the scapula

Question 6

What is the origin of the medial head of the triceps?

Answer 6

below the radial sulcus (groove)

Question 7

What is the origin for the lateral head of the triceps?

Answer 7

Above the radial sulcus (groove)

Question 8

Where does the long head of the biceps brachii originate?

Answer 8

Supraglenoid tubercle - goes up through intertubercular sulcus

Question 9

Where does the short head of the biceps brachii originate?

Answer 9

Coracoid process of the scapula

Question 10

What is the insertion of the biceps brachii?

Answer 10

Radial tuberosity and the bicipital aponeurosis into deep fascia on medial part of forearm

Question 11

What is the coronoid process?

Answer 11

The little sticky outey bone at the elbow on the ulna, under the trochlear notch.

Question 12

What is the origin of the brachialis?

Answer 12

Anterior surface of the humerus, distal half

Question 13

What is the insertion of the brachialis?

Answer 13

Coronoid process and tuberosity of the ulna

Question 14

What is the origin of the flexor digitorum superficialis?

Answer 14

Medial epicondyle of the humerus

Question 15

What is the insertion of the flexor digitorum superficialis?

Answer 15

Anterior margins on the bases of the middle phalanges of the four fingers

Question 16

What is the origin of the flexor digitorum profundus?

Answer 16

Upper 3/4 of the volar and medial surfaces of the body of the ulna, interosseous membrane and deep fascia of the forearm

Question 17

What is the insertion of the flexor digitorum profundus?

Answer 17

Base of the distal phalanges of the fingers

Question 18

Where does the flexor pollicis longus originate?

Answer 18

The middle 2/4 of the volar surface of the radius and the adjacent interosseus membrane

Question 19

Where does the flexor pollicis longus insert?

Answer 19

The base of the distal phalanx of the thumb.

Question 20

Where does the extensor pollicis longus orginate?

Answer 20

Middle third of posterior surface of ulna, interosseous membrane

Question 21

Where does the extensor pollicis longus insert?

Answer 21

Thumb, distal phalanx

Question 22

Where does the extensor pollicis brevis originate?

Answer 22

Radius and the interosseous membrane

Question 23

Where does the extensor pollicis brevis insert?

Answer 23

Thumb, proximal phalanx

Question 24

What innervates the dorsal interossei of the hand?

Answer 24

Deep branch of ulnar nerve

Question 25

What innervates the palmar interossei muscles of the hand?

Answer 25

Deep branch of the ulnar nerve

Question 26

What innervates the lumbricals of the hand?

Answer 26

1 and 2 - median nerve

3 and 4 - deep branch of ulnar nerve

Question 27

What is the function of the subscapularis?

Answer 27

internal rotation (rotates head of humerus medially)

Question 28

What are the functions of the infraspinatus and the teres minor?

Answer 28

Part of rotator cuff, laterally rotate the humerus, transverse adduction

Question 29

What is the function of the teres major?

Answer 29

Medial rotator, adductor of the humerus, stabilizes humoral head in the glenoid cavity

Question 30

What is the function of the supraspinatus muscle?

Answer 30

Abductor of the arm, part of rotator cuff, stabilizes head of the humerus

Question 31

What is the function of the deltoid?

Answer 31

abduction of the shoulder, transverse extension, prevents dislocation of humeral head