Upper Limb

Question 0

Insertion of biceps brachii

Answer 0

Tuberoisty of radius and fascia of forearm via bicipital aponeurosis

Question 1

Bicep brachii origin

Answer 1

Short head: tip of coracoid process of scapula

Long head: supraglenoid tubercle of scapula

Question 2

Whats the innervation of the biceps brachii?

Answer 2

Musculocutaneous nerve (c5,c6)

Question 3

Whats the action of the bicep brachii?

Answer 3

Supinates the forearm and when it is supinated, flexes the elbow joint; flexes the shoulder joint; short head resists dislocation of shoulder

Question 4

Whats is the origin of the brachialis?

Answer 4

Distal half of anterior surface of humerus

Question 5

Whats the insertion for the brachialis?

Answer 5

Coronoid process and tuberoisty of ulna

Question 6

Whats the innervation for the brachialis

Answer 6

Musculatenous nerve (c5, c6)

Question 7

Whats the action for the brachialis?

Answer 7

Flexes the elbow joint in all positions

Question 8

Whats the origin of the coracobrachiallis?

Answer 8

Tip of coracoid process of the scapula

Question 9

Whats the insertion for the coracobrachialis?

Answer 9

Medial third of media surface of the humerus

Question 10

Whats the innervation for the coracobrachialis?

Answer 10

Musculocuntaeous nerve (c5,c6,c7)

Question 11

Whats the actions for the coracobrachialis?

Answer 11

It helps flex and adduct the shoulder joint; resists dislocation of shoulder

Question 12

Whats the origin of the tricep brachii?

Answer 12

Long head: infraglenoid tubercle of the scapula

Lateral head: posterior surface of humeru, superior to radial grove

Media head: posterior surface of humerus, inferior to radial grove

Question 13

Whats the insertion of the tricep brachii

Answer 13

The proximal end of the olecranon of ulna and fascia of forearm

Question 14

Whats the innervation of the tricep brachii?

Answer 14

Radial nerve (c6,c7,c8)

Question 15

Whats the action of the tricep brachii?

Answer 15

Chief extensor of the elbow joint; long head extends the shoulder joint and resists dislocation of humerus (especially important during abduction)