Upper Limb 2 - Anterior Arm, Neurovascular, Cubital Fossa, Posterior Arm & Elbow Joint

Question 1

What are the 2 heads of the bicep brachii?

Answer 1

Long and Short

Question 2

Which head of the biceps arises from the coracoid process together with the coracobrachialis?

Answer 2

Short head

Question 3

Which head of the biceps originates from the supraglenoid tubercle and runs in the bicipital groove of the humerus?

Answer 3

Long head

Question 4

On which bony process of the radius does the tend of the biceps attach distally?

Answer 4

Radial Tuberosity

Question 5

What is the action of the biceps on the elbow and shoulder joints?

Answer 5

Flexion

Question 6

What is the action of the biceps on the superior radio-ulnar joint?

Answer 6

It is a powerful supinator of the radio-ulnar joint

Question 7

What is the nerve supply to the biceps brachii muscle?

Answer 7

Musculocutaneous muscle

Question 8

Which spinal segment levels innervate the biceps brachii?

Answer 8

C5, C6, C7

Question 9

From which cord of the brachial plexus does the musculocutaneous nerve arise?

Answer 9

Lateral cord

Question 10

What is the action of coracobrachialis on the shoulder joint?

Answer 10

Flexion

Question 11

What is the nerve supply of coracobrachialis?

Answer 11

Musculocutaneous nerve

Question 12

What is the main action of brachialis on the elbow joint?

Answer 12

Flexion

Question 13

Which nerve innervates the brachialis muscle?

Answer 13

Musculocutaneous nerve

Question 14

What are the 3 muscles supplied by the musculocutaneous nerve?

Answer 14

1 - Biceps Brachii

2- Coracobrachialis

3 - Brachialis

Question 15

From which area of the arm does the musculocutaneous nerve start carrying cutaneous sensory nerves?

Answer 15

Distal to the biceps tendon within the cubital fossa

Question 16

To which area of the arm does the musculocutaneous nerve supply sensory innervation?

Answer 16

Lateral aspect of the forearm

Question 17

From which cords of the brachial plexus is the median nerved made up of?

Answer 17

Medial and lateral cords

Question 18

Which group of muscles does the median nerve supply?

Answer 18

• Flexor muscles in anterior forearm
• Thenar muscle of hand

Question 19

From which cord of the brachial plexus is the ulnar nerve formed?

Answer 19

Medial cord

Question 20

Behind which bony prominence does the ulnar nerve travel?

Answer 20

Medial epicondyle

Question 21

Which muscles of the arm does the ulnar nerve innervate?

Answer 21

Muscles of hand (except Thenar muscles and 2 lateral lumbricals)

Flexor Carpi Ulnaris

Medial half of Flexor Digitorum Profundus

Question 22

Where is the most common site on the humerus where the radial nerve could be damaged?

Answer 22

Radial groove or mid-humeral shaft fracture

Question 23

Where is the most common site on the humerus where the ulnar nerve could be damaged?

Answer 23

Medial epicondyle

Question 24

Where is the most common site on the humerus where the axillary nerve could be damaged?

Answer 24

Surgical neck

Question 25

Which artery is easily palpable within the cubital fossa?

Answer 25

Brachial

Question 26

Which muscle forms the medial border of the cubital fossa?

Answer 26

Pronator Teres

Question 27

Which muscle forms the lateral border of the cubital fossa?

Answer 27

Brachioradialis

Question 28

What are the contents of the cubital fossa?

Answer 28

Brachial artery Median cubital vein Tendon of Biceps Brachii Radial and Median Nerve

Question 29

Which vein within the cubital fossa is a common site of IV injections?

Answer 29

Medial cubital vein

Question 30

The olecranon process and coronoid process are parts of which forearm bone?

Answer 30

Ulna

Question 31

Which head of the triceps has its proximal attachment on the infraglenoid tubercle of scapula?

Answer 31

Long head

Question 32

What is the main action of the triceps on the elbow joint?

Answer 32

Extension

Question 33

What is the nerve supply to the triceps muscle?

Answer 33

Radial nerve

Question 34

Which cord of the brachial plexus forms the radial nerve?

Answer 34

Posterior cord

Question 35

What are the main actions of the radial nerve?

Answer 35

Innervates all extensor muscle of the elbow and wrist joint

Question 36

Which artery of the arm is the radial nerve closely associated with

Answer 36

Profunda Brachii

Question 37

What is the segmental value of the radial nerve?

Answer 37

C5, C6, C7, C8, T1

Question 38

What is the characteristic clinical sign of radial nerve damage?

Answer 38

Wrist-drop

Question 39

What movements occur at the elbow joint?

Answer 39

Flexion and Extension

Question 40

Which ligament crosses over the head of the ulnar in a medio-lateral direction?

Answer 40

Annular ligament

Question 41

Which ligament of the elbow holds the head of the radius?

Answer 41

Radial collateral ligament

Question 42

What are the flexors of the elbow joint?

Answer 42

Biceps brachii Brachialis Brachioradialis

Question 43

Which muscles perform extension of the elbow joint?

Answer 43

Triceps brachii Anconeus

Question 44

What are the movements that occur at the radio-ulnar joint?

Answer 44

Pronation Supination

Question 45

What common injury can occur in young children at the radial head?

Answer 45

Pulled elbow or subluxation

Question 46

Which muscles of the forearm are involved in supination?

Answer 46

Supinator Biceps Brachii

Question 47

Which muscles of the forearm are involved in pronation?

Answer 47

Pronator Teres Pronator Quadratus

Question 48

Which muscle is the most powerful supinator of the forearm?

Answer 48

Biceps Brachii

Question 49

Which muscle is the most powerful pronator of the forearm?

Answer 49

Pronator Teres