Muscles of the Arm

Question 1

Anconeus M. (Attachments)

Answer 1

FROM
* Lateral epicondyle of humerus

TO
* Lateral surface of the olecranon process

Question 2

Anconeus M. (Actions)

Answer 2

• Elbow Extension

Question 3

Anconeus M. (Innervation)

Answer 3

• Radial N.
• (C7-C8)

Question 4

Biceps Brachii M. (Attachments)

Answer 4

FROM
* Short head: Coracoid process
* Long head: Supraglenoid tubercle of the scapula

TO
* Both: Radial tuberosity
* Deep antebrachial fascia (through the bicipital aponeurosis)

Question 5

Biceps Brachii M. (Actions)

Answer 5

• Shoulder flexion
• Elbow flexion
• Forearm supination

Question 6

Biceps Brachii M. (Innervation)

Answer 6

• Musculocutaneous N.
• (C5-C6)

Question 7

Brachialis M. (Attachments)

Answer 7

FROM
* Distal anterior shaft of the humerus
* Lateral & medial intermuscular septa

TO
* Coronoid process
* Ulnar tuberosity

Question 8

Brachialis M. (Actions)

Answer 8

• Elbow flexion

Question 9

Brachialis M. (Innervation)

Answer 9

• Musculocutaneous N.
• Small branch of Radial N.
• (C5-C6)

Question 10

Coracobrachialis M. (Attachments)

Answer 10

FROM
* Coracoid process

TO
* Proximal medial shaft of the humerus

Question 11

Coracobrachialis M. (Actions)

Answer 11

• Shoulder flexion
• Shoulder adduction

Question 12

Coracobrachialis M. (Innervation)

Answer 12

• Musculocutaneous N.
• (C6-C7)

Question 13

Triceps Brachii M. (Attachments)

Answer 13

FROM
* Long head: Infraglenoid tubercle of the scapula
* Lateral head: Proximal posterolateral shaft of humerus
* Medial head: Distal posteromedial shaft of humerus

TO
* Olecranon process of the ulna

Question 14

Triceps Brachii M. (Actions)

Answer 14

• Shoulder extension (long head)
• Elbow extension (all heads)

Question 15

Triceps Brachii M. (Innervation)

Answer 15

• Radial N.
• (C6-T1)