Arm and Cubital Fossa

Question 1

anterior compartment arm

Answer 1

Biceps brachii
Coracobrachialis
Brachialis

Question 2

posterior compartment of arm

Answer 2

Triceps brachii

Question 3

Biceps brachii

Answer 3

long head
O- supraglenoid tubercle of the scapula

short head
O- coracoid process of the scapula

I- tubercle of the radius and bicipital aponeurosis
N- musculocutaneous nerve
A- flexes and supinates forearm

Question 4

Coracobrachialis

Answer 4

O- coracoid process of the scapula
I- middle third of the medial side of the humerus
N- musculocutaneous nerve
A- flexion and adduction of the arm

Question 5

Brachialis

Answer 5

O- distal half of the anterior surface of the humerus
I- coronoid process and tuberosity of the ulna
N- musculocutaneous, nerve and radial nerve
A- flexes forearm (workhorse)

Question 6

triceps brachii

Answer 6

Long head
O- infraglenoid tubercle of the scapula

medial head
O- posterior surface of the humerus inferior to the spiral groove

Lateral head
O-posterior surface of the humerus superior to the spiral groove

I- olecranon process of the ulna
N- radial nerve
A- extends the forearm

Question 7

Anconeus

Answer 7

Not considered part of the posterior compartment

O- lateral epicondyle of the humerus
I- lateral surface of olecranon process and posterior surface of the ulna
N- radial nerve
A- extension of the forearm- it pulls on capsule of elbow joint to prevent it being pinched during extension

Question 8

musculocutaneous nerve

Answer 8

from lateral cord brachial plexus

supplies anterior brachium

Question 9

radial nerve

Answer 9

from posterior cord

supplies posterior brachium and continues into forearm

Question 10

brachial artery

Answer 10

gives rise to profunda brachii artery which travels to the posterior brachium with radial nerve to supply posterior compartment

2 brachial veins accompany brachial artery

Question 11

cephalic vein

Answer 11

Superficial vein

Runs along the anterior lateral surface of the biceps and empties into the axillary vein near the deltopectoral triangle

Question 12

basilic vein

Answer 12

superficial vein

Runs along the inferior medial surface
Enters deep to the brachial facia at the middle of the arm, and becomes the axillary vein

Question 13

median cubital vein

Answer 13

Communication of the cephalic and basilic in the cubital fossa

Question 14

Boundaries of the cubital fossa

Answer 14

superior- imaginary line between the epicondyles of the humerus
Lateral - brachioradialis
medial- pronator teres
Floor - medial- brachialis
- Lateral- supinator
Roof- cubital fascia

Question 15

contents of the cubital fossa: superficial layer

Answer 15

Basilic vein
Cephalic vein
Median cubital vein
Bicipital aponeurosis

Question 16

contents of the cubital fossa: deep layer

Answer 16

tendon of the biceps brachii (lateral)
Brachial artery
Median nerve (medial)
Also, the radial and ulnar nerve’s can be found near by

TAN

Question 17

arcade of föhse

Answer 17

Superior part of the superficial layer of the supinator muscle

deep branch of radial nerve runs under here

Question 18

what nerves did not pass to thru the cubital fossa

Answer 18

radial nerve and ulnar nerve