Arm and Elbow

Question 1

Biceps Brachii O

Answer 1

Short Head: tip of coracoid process of scapula

Long Head: supraglenoid tubercle of scapula

Question 2

Biceps Brachii I

Answer 2

tuberosity of radius and fascia of forearm via bicipital aponeurosis

Question 3

Biceps Brachii Innervation

Answer 3

musculocutaneous nerve C5 C6

Question 4

Biceps Brachii Action

Answer 4

supinates forearm, and when supinated , flexes elbow joint; flexes shoulder joint; short head resists dislocation of shoulder.

Question 5

Coracobrachialis O

Answer 5

tip of coracoid process of scapula

Question 6

Coracobrachialis I

Answer 6

middle third of medial surface of humerus

Question 7

Coracobrachialis Innervation

Answer 7

musculocutaneous nerve C5, C6, C7

Question 8

Coracobrachialis Action

Answer 8

helps flex and adduct shoulder joint, resist dislocation of shoulder

Question 9

Brachialis O

Answer 9

distal haf of anterior surface of humerus

Question 10

Brachialis I

Answer 10

coronoid process and tuberosity of ulna

Question 11

Brachialis Innervation

Answer 11

musculocutaneous nerve C5, C6

Question 12

Brachialis Action

Answer 12

flexes elbow joint in all positions

Question 13

Triceps Brachii O

Answer 13

Long head: infraglenoid tubercle of scapula
Lateral hed: posterior surface of humerus, superior to radial groove
Medial head: posterior surface of humerus, inferior to radial groove

Question 14

Triceps Brachii I

Answer 14

proximal end of olecranon of ulnaand fascia of forearm

Question 15

Triceps Brachii Innervation

Answer 15

radial nerve (C6, C7, C8)

Question 16

Triceps Brachii Action

Answer 16

chied extensor of elbow joint, long head extends houlder joint and resists dislocation of humerus (especially important during abduction)