The Arm and Cubital Fossa

Question 1

junction between the arm (brachium) & forearm regions (antebrachium)

Answer 1

the cubital fossa

Question 2

What are some superficial structures of the cubital fossa

Answer 2

• cephalic vein
• median cubital vein
• medial epicondyle
• basilic vein
• Median antebrachial vein

Question 3

What are some subcutneous features ofo the cubital fossa?

Answer 3

• cephallic vein
• biceps brachii
• basillic vein
  -median cubital vein
  -

Question 4

What is a common flexor origin?

Answer 4

the medial epicondyle

Question 5

What is the lateral boundary of the cubital fossa?

Answer 5

brachioradialis muscle

Question 6

What is the medial boundary of the cubital fossa?

Answer 6

pronator teres muscle

Question 7

What is the Superior boundary of the cubital fossa?

Answer 7

an imaginary line between medial & lateral epicondyles M of humerus

Question 8

What is the Roof of the cubital fossa?

Answer 8

skin, superficial & deep fascia,

bicipital aponeurosis

Question 9

What is the floor of the cubital fossa?

Answer 9

supinator (deep, not shown) and brachialis muscles

Question 10

1. median nerve
2. Brachial a. with bifurcation of radial & ulnar arteries
3. brachial veins (venae comitantes)
4. tendon of biceps brachii & bicipital
   aponeurosis
5. radial nerve (deeper - shown on next slide)
   • deep radial nerve
   • superficial radial nerve

Answer 10

Contents of the Cubital Fossa

Question 11

What is posterior to the cubital fossa region?

Answer 11

elbow region

Question 12

The following are contents of what region? ‘
• triceps and olecranon process
• anconeus
• ulnar nerve runs posterior to medial epicondyle of humerus
• posterior ulnar recurrent artery
also runs posterior to medial
epicondyle

Answer 12

Contents of the elbow

Question 13

The anterior compartment of the arm contains what muscle types?

Answer 13

flexors

Question 14

The Posterior compartment of the arm contains what muscle types?

Answer 14

extensors

Question 15

The ______ ______ _____ divides the brachium into and anterior and posterior compartment

Answer 15

medial intermuscular septa

Question 16

The _____ and _____ muscles lie in the anterior brachial compartment.

Answer 16

biceps

brachialis

Question 17

The ______ muscles lie in the posterior brachial compartment

Answer 17

triceps

Question 18

What brachial/ cutaneous nerves have radial nerve origins?

Answer 18

posterior cutaneous nerve of arm (posterior brachial cutaneous nerve)

posterior cutaneous nerve of forearm (posterior antebrachial cutaneous nerve)

posterior cutaneous nerve of arm (posterior brachial cutaneous nerve)

Question 19

What muscles of the arm are located in the anterior (flexor) compartment

Answer 19

biceps brachii

brachialis

coracobrachialis

Question 20

What innervates the muscles of the arm located in the anterior compartment?

Answer 20

musculocutaneous nerve.

Question 21

supraglenoid tubercle of scapula and coracoid process of scapula is Proximal Attachment of what Muscle?

Answer 21

the biceps brachii

Question 22

-radial tuberosity and fascia of forearm

via bicipital aponeurosis is distal Attachment of what muscle?

Answer 22

biceps brachii

Question 23

• supinates forearm, when supine will flex forearm

- resists dislocation of shoulder (short head) are actions of what muscle?

Answer 23

the biceps brachii

Question 24

innervation of the biceps brachii

Answer 24

• musculocutaneous nerve (C5, C6)

Question 25

-coracoid process of scapula is Proximal Attachment of what muscle?

Answer 25

coracobrachialis

Question 26

-middle 1/3 of medial humeral surface is Distal Attachment of what muscle?

Answer 26

coracobrachialis

Question 27

• flexes & adducts arm at shoulder joint

- resists dislocation of shoulder joint are actions of what muscle?

Answer 27

coracobrachialis

Question 28

innervation of coracobrachialis

Answer 28

• musculocutaneous nerve (C5, C6, C7)

Question 29

-distal ½ of anterior surface of humerus is Proximal Attachment of what muscle?

Answer 29

Brachialis

Question 30

-coronoid process and tuberosity of ulna is Distal Attachment of what muscle?

Answer 30

Brachialis

Question 31

-flexes forearm at elbow joint are Actions of what muscle?

Answer 31

Brachialis

Question 32

innervation of Brachialis

Answer 32

• musculocutaneous nerve (C5, C6)

- Lateral portions may receive radial nerve contributions

Question 33

blood supply of Brachialis

Answer 33

• Brachial artery

Question 34

what muscles comprise the posterior (extensor) compartment of the brachium.

Answer 34

• triceps brachii
     long head 
     lateral head 
     medial head
• anconeus

Question 35

What innervates the muscles of the posterior (extensor) compartment of the brachium.

Answer 35

radial nerve.

Question 36

___ vein runs alongside neurovascular bundle which could damage the median nerve

Answer 36

Basilic vein