The arm

Question 1

What can be used to identify the anterior view of the humerus?

Answer 1

The capitulum - ball shaped at the bottom

Question 2

What does the capitulum articulate with?

Answer 2

Head of the radius

Question 3

What does the trochlea articulate with?

Answer 3

The notch of the ulna

Question 4

Where does the radial nerve cross the humerus?

Answer 4

Crosses in the spinal groove to the anterior side (radial groove)

Question 5

Where does the ulnar nerve lie?

Answer 5

Distal humerus, posterior to the medial epicondyle

Can be called the funny bone

Question 6

Which muscle inserts onto the deltoid tuberosity?

Answer 6

The deltoid

Question 7

Which muscles insert onto the intertubercular groove?

Answer 7

Pectoralis major, terres major and the lattisumus dorsi

Question 8

Which muscles attach to the greater tubercle?

Answer 8

Infraspinatous, teres minor and the supraspinatous

Question 9

Which muscle inserts on to the lesser tubercle?

Answer 9

The subscapularis

Question 10

What are the three muscles in the flexor compartment of the arm?

Answer 10

Biceps brachii
Brachialis
Corachobrachialis

Question 11

How many heads does the biceps brachii have?

Answer 11

2

Question 12

Where does the long head of the biceps brachii originate and insert?

Answer 12

Arises from the supraglenoid tubercle and inserts onto the radial tuberisity

Question 13

Where does the short head of the biceps brachii originate and insert?

Answer 13

Arises from the corocoid process and inserts onto the biceptal apneurosis on the medial part of the forearm

Question 14

What are the actions of the biceps brachii?

Answer 14

Act to flex the elbow and flex and adduct the shoulder

Question 15

Where is the brachialis?

Answer 15

Deeper than the brachii

Arises from the surface of the humerus and inserts onto the ulnar

Question 16

What is the corachobrachialis?

Answer 16

Deep muscle which arises from the coracoid process and inserts onto the medial humerus
It adducts the humerus

Question 17

Which nerve supplies the flexor compartment?

Answer 17

The muscolocutaneous nerve

Question 18

Which artery supplies the flexor compartment?

Answer 18

The brachial artery

Question 19

What are the borders of the cubital fossa?

Answer 19

Lateral = brachioradialis 
Medial = pronator teres
Superior = Imaginary line between the epicondyles of the humerus

Question 20

What are the contents of the cubital fossa?

Answer 20

Radial nerve
Brachail tendon
Brachial artery
Median nerve

Question 21

What does the brachial artery bifurcate into?

Answer 21

The radial and ulnar arteries

Question 22

What is a common site for venepuncture?

Answer 22

The medial cubital vein

Located superficially within the cubital fossa

Question 23

What are the muscles of the extensor compartement?

Answer 23

The triceps brachii - have 3 heads

Long, medial and lateral

Question 24

Which nerve supplies the extensor compartment?

Answer 24

The radial nerve

Question 25

Which nerve supplies the deltoid muscle?

Answer 25

The axillary nerve

Question 26

What is the brachial plexus responsible for?

Answer 26

Cutaneous and musular innervation of the entire upper limb except the trapezius

Question 27

What does the Axillary nerve supply?

Answer 27

Skin on the lateral portion of the shoulder/upper arm, deltoid and teres minor

Question 28

What does the Radial nerve supply?

Answer 28

Posterior aspect of the lateral forearm and wrist, posterior arm, triceps brachii, brachioradialis and extensor muscles of the arm and forearm

Question 29

What does the ulnar nerve supply?

Answer 29

``` Skin of the palm, medial side of the hand and digits 3-5 Some forearm flexors Thumb adductor Lumbricals 3-4 Interosseous muscles ```

Question 30

What does the median nerve supply?

Answer 30

``` Skin of the lateral 2/3 of the hand Tips of digits 1-4 Forearm flexors Thenar eminance Lumbricals of hand 1-2 ```

Question 31

What does the Musculocutaneous nerve supply?

Answer 31

Skin of the anterolateral forearm Biceps brachialis Coracobrachialis