Nerves of the Upper Limb

Question 1

How many cervical spinal nerves are there?

Answer 1

8

Question 2

What are the two enlargements?

Answer 2

Cervical and lumbar enlargements

Question 3

What gives rise to the major plexuses of the upper and lower limbs?

Answer 3

Cervical and lumbar enlargements

Question 4

What is the major plexus of the upper limb

Answer 4

Brachial plexus

Question 5

What ventral rami make up the brachial plexus?

Answer 5

C5-T1

Question 6

What muscles does the brachial plexus innervate?

Answer 6

All upper limb muscles except the trapezius m.

Question 7

What are the rami of the brachial plexus?

Answer 7

C5-T1

Question 8

What are the trunks of the brachial plexus?

Answer 8

Upper, middle and lower

Question 9

What are the divisions of the brachial plexus?

Answer 9

Anterior and posterior

Question 10

What are the cords of the brachial plexus?

Answer 10

Medial lateral and posterior

Question 11

Where do the cords form?

Answer 11

In the axillary region

Question 12

What are the 5 terminal branches of the brachial plexus?

Answer 12

musculocutaneous, median, ulnar, axillary and radial branches

Question 13

What are the cord levels of the musculocutaneous nerve?

Answer 13

C5-C7

Question 14

What are the cord levels of the ulnar nerve?

Answer 14

C8-T1

Question 15

What are the cord levels of the median nerve?

Answer 15

C5-T1 (same as the radial nerve)

Question 16

What muscles does the median nerve innervate?

Answer 16

Majority of anterior forearm, thenar eminence, lumbricals 1 and 2.

Question 17

What are the cord levels of the radial nerve?

Answer 17

C5-T1 (same as the median nerve)

Question 18

What muscles does the ulnar nerve innervate?

Answer 18

Majority of the hand muscles, half of flexor digitorum profundus and flexor carpi ulnaris

Question 19

What muscles does the radial nerve innervate?

Answer 19

Posterior arm, posterior forearm

Question 20

Through where does the radial nerve pass?

Answer 20

Radial groove of the humerus

Question 21

What are the cord levels of the axillary nerve?

Answer 21

C5-C6

Question 22

What muscles does the axillary nerve innervate?

Answer 22

Deltoid and teres minor mm.

Question 23

Which nerves supply sensation to the hand?

Answer 23

Median, radial, ulnar nerves

Question 24

Where does the dorsal scapular nerve originate?

Answer 24

Ventral ramus of C5

Question 25

Where does the long thoracic nerve originate?

Answer 25

Ventral rami C5-C7

Question 26

Where does the suprascapular nerve originate?

Answer 26

Upper trunk

Question 27

What does the dorsal scapular nerve innervate?

Answer 27

Levator scapulae, rhomboids mm.

Question 28

What does the long thoracic nerve innervate?

Answer 28

Serratus anterior m.

Question 29

What does the suprascapular nerve innervate?

Answer 29

Supraspinatus and infraspinatus mm.

Question 30

Where does the medial pectoral nerve originate?

Answer 30

The medial cord

Question 31

Where does the lateral pectoral nerve originate?

Answer 31

The lateral cord

Question 32

What does the medial pectoral nerve innervate?

Answer 32

Pectoralis minor and major mm.

Question 33

What does the lateral pectoral nerve innervate?

Answer 33

Pectoralis major m.

Question 34

What 3 nerves branch off of the posterior cord?

Answer 34

Upper subscapular, thoracodorsal and lower subscapular nn.

Question 35

What does the upper subscapular nerve innervate?

Answer 35

Subscapularis m (along with lower subscapular nerve)

Question 36

What does the thoracodorsal nerve innervate?

Answer 36

Latissimus dorsi m.

Question 37

What does the lower subscapular nerve innervate?

Answer 37

Subscapularis (along with upper subscapular nerve) and teres major mm.