Arm

Question 1

Biceps brachii origins

Answer 1

Long head - supraglenoid tubercle of scapula

Short head - coracoid process of scapula

Question 2

Biceps brachii insertions

Answer 2

both insert distally into radial tuberosity and fascia of forearm via bicipital aponeurosis

Question 3

Biceps brachii action

Answer 3

Supination of forearm. Flexion at elbow and shoulder

Question 4

Coracobrahialis Origins

Answer 4

Coracoid process of scapula

Question 5

Coracobrachialis insertions

Answer 5

Medial side of humeral shaft at level of deltoid tubercle

Question 6

Coracobrachialis action

Answer 6

Flexion of arm at shoulder and weak adduction

Question 7

Brachialis origins

Answer 7

Medial and lateral surfaces of humeral shaft

Question 8

Brachialis insertions

Answer 8

Ulna tuberosity, just distal to elbow joint

Question 9

Brachialis action

Answer 9

Elbow flexion

Question 10

Triceps origins

Answer 10

Long head - infraglenoid tubercle. Lateral - humerus superior to radial groove. Medial - humerus inferior to radial groove

Question 11

Triceps insertions

Answer 11

Heads converge onto one tendon and insert into olecranon of ulna

Question 12

Triceps action

Answer 12

Extension of arm at elbow

Question 13

Cubital fossa

Answer 13

Area of transition between arm and forearm
Triangular with three boarders
Located as depression on anterior surface of elbow joint

Question 14

Cubital fossa lateral border

Answer 14

Medial border of brachioradialis muscle

Question 15

Cubital fossa medial border

Answer 15

Lateral border of pronator teres muscle

Question 16

Cubital fossa superior border

Answer 16

Hypothetic line between epicondyles of humerus

Question 17

Cubital fossa floor

Answer 17

Formed proximally by brachial and distally by spinster muscles

Question 18

Cubital fossa roof

Answer 18

Consists of skin and fascia, reinforce by bicipital aponeurosis

Question 19

Cubital fossa contents

Answer 19

Radial nerve, biceps tendon, brachial artery and median nerve

Question 20

Radial nerve cubital fossa

Answer 20

Passes underneath brachioradialis muscle, divides into deep and superficial branches here

Question 21

Biceps tendon cubital fossa

Answer 21

Runs through, attaching to radial tuberosity, just distal to radius neck

Question 22

Brachial artery cubital fossa

Answer 22

supplies oxygenated blood to the forearm. bifurcates into radial and ulnar arteries at cubital fossa apex

Question 23

Median nerve cubital fossa

Answer 23

Leaves cubital between two heads of pronator teres. Supplies majority of flexor muscles in forearm

Question 24

Which muscles does the Musculocutaneous nerve innervate?

Answer 24

Innervates brachialis, biceps brachii and coracobrachialis muscles

Question 25

Which muscles does the Axillary nerve innervate?

Answer 25

Innervates teres minor and deltoid muscles

Question 26

What muscles does the Radial nerve innervate?

Answer 26

triceps brachii

Question 27

Where does the subclavian artery become the axillary artery?

Answer 27

lateral border of the first rib

Question 28

Where does the axillary artery become the brachial artery?

Answer 28

Lower border of the teres major muscle

Question 29

Termination of brachial artery

Answer 29

Occurs when it bifurcates into the radial and ulnar arteries

Question 30

The brachial plexus

Answer 30

Begins at root of neck, passes through the axilla and runs through the entire upper extremity.

Question 31

What vertebrae does the brachial plexus arise from?

Answer 31

C5, C6, C7, C8 and T1

Question 32

Basilic vein

Answer 32

Originates from dorsal venous network of head and ascends the medial aspect of the upper limb

Question 33

basilic vein to axillary vein

Answer 33

At border of teres major the basilic vein moves deep into the arm and combines with the brachial veins from the deep venous system to become the axillary vein

Question 34

Cephalic vein

Answer 34

Arises from dorsal venous network of the blood. Ascends the anterolateral aspect of the upper limb, passing anteriorly at the elbow. Empties into axillary vein

Question 35

Median cubital vein

Answer 35

Cephalic and basilic vein connected at the elbow by this