Muscles Of Arm

Question 0

Bicep brachii insertion

Answer 0

Tuberosity of radius and fascia of forearm

Question 1

Biceps brachii origin

Answer 1

Short head: tip of coracoid

Long head : supra glenoid tubercle of scapula

Question 2

innervation of bicep brachii

Answer 2

musculocutaneous (C5, C6)

Question 3

main action of Bicep Brachii

Answer 3

Supinates forearm
when suponates, flexes elbow joint
flexes shoulder joint
shorter head resist dislocation of shoulder

Question 4

Brachialis Origin

Answer 4

Distal half of humerus

Question 5

insertion of Brachialis

Answer 5

Coronoid process and tuberosity of ulna

Question 6

brachialis innervation

Answer 6

musculocutaneous C5 C6

Question 7

action of brachialis

Answer 7

flexes elbow joint in all positions

Question 8

coracobrachialis origin

Answer 8

tip of coracoid process

Question 9

insertion of coracobrachialis

Answer 9

middle third of medial surface of humerus

Question 10

innervation of coracobrachialis

Answer 10

Musculocutaneous C5 C6 C7

Question 11

Action of coracobrachialis

Answer 11

helps flex and adduct shoulder joint

resist dislocation of shoulder

Question 12

Triceps brachii Origin

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

Innervation of triceps brachii

Answer 13

Radial nerve C6 C7 C8

Question 14

Action of Triceps Brachii

Answer 14

chief extensor of elbow joint

Long Head; extends shoulder joint and resists dislocation

Question 15

insertion of tricep Brachii

Answer 15

Proximal end of Olecranon of ulna and fascia of forearm