Muscles of Arm

Question 0

Insertion of Biceps Brachii

Answer 0

Tuberosity of Radius

Fascia of Forearm via Bicipital Aponeurosis

Question 1

Origin of Biceps Brachii

Answer 1

Short Head: Tip of Coracoid Process of Scapula

Long Head: Supraglenoid Tubercle of Scapula

Question 2

Innervation of Biceps Brachii

Answer 2

Musculocutaneous Nerve c5 C6

Question 3

Actions of Biceps Brachii

Answer 3

Supinates forearm; when it is supinated, flexes Elbow Joint

Short Head resists dislocation of Shoulder

Question 4

Origin of Brachialis

Answer 4

Distal half of anterior surface of Humerus

Question 5

Insertion of Brachialis

Answer 5

Coronoid process

Tuberosity of Ulna

Question 6

Innervation of Brachialis

Answer 6

Musculocutaneous Nerve c5 C6

Question 7

Actions of Brachialis

Answer 7

Flexes elbow joint in all positions

Question 8

Origin of Coracobrachialis

Answer 8

Tip of Coracoid process of Scapula

Question 9

Insertion of Coracobrachialis

Answer 9

Middle third of Medial surface of Humerus

Question 10

Innervations of Coracobrachialis

Answer 10

Musculocutaneous Nerve c5 C6 c7

Question 11

Actions of Coracobrachialis

Answer 11

Helps Flex and Adduct Shoulder joint; resists dislocation of Shoulder

Question 12

Origin of Triceps Brachii

Answer 12

Long Head: Infraglenoid Tubercle of Scapula
Lateral Head: Posterior surface of Humerus Superior to Radial Groove
Medial Head: Posterior surface of Humerus Inferior to Radial Groove

Question 13

Insertion of Triceps Brachii

Answer 13

Proximal end of Olecranon of Ulna and Fascia of Forearm

Question 14

Innervation of Triceps Brachii

Answer 14

Radial Nerve c6 C7 C8

Question 15

Actions of Triceps Brachii

Answer 15

Chief Extensor of Elbow Joint

Long Head Extends Shoulder joint and Resists dislocation of Humerus (especially important during Abduction)