Assessments Unit 2 Nerves

Question 1

Where is the cervical plexus?

Answer 1

In the prevertebral layer of cervical fascia of C1-C4

Question 2

Why would you block the stellate ganglion?

Answer 2

To block sympathetic impulses

Question 3

What causes Horner’s syndrome?

Answer 3

Phrenic nerve blockade, which is blockaded by the stellate ganglion

Question 4

At what levels could you do an interscalene block?

Answer 4

C5-7

Question 5

What levels would you find the brachial plexus?

Answer 5

C5-T1

Question 6

What nerve innervates the shoulder?

Answer 6

Supraclavicular (C3-C4)

Question 7

What nerve innervates the deltoid muscles?

Answer 7

The axillary and superior lateral cutaneousnerve C5/6

Question 8

What nerve gives rise to the upper lateral cutaneous nerve?

Answer 8

The axillary nerve

Question 9

What innervates the muscles in the anterior compartment of the arm and innervates the sensory functions of the lateral aspect of the forearm?

Answer 9

Musculocutaneous nerve C5-7.

Question 10

What innervates the flexor/pronator muscles in the anterior compartment of the forearm and innervates sensory function to the palmar cutaneous branch which then innervates the lateral aspect of the palm?

Answer 10

The median nerve C6-T1

Question 11

What innervates the triceps and extensor muscles in the forearm, and provides sensory innervation to the posterior forearm, lateral dorsum of the hand and the dorsal surface of the lateral three and a half digits?

Answer 11

The radial nerve C5-T1

Question 12

What innervates the flexor carpi ulnaris and medial half of flexor digitorom and provides sensory innervation to the medial one and a half fingers and the palm?

Answer 12

Ulnar nerve C8-T1

Question 13

Where is the lumbar plexus?

Answer 13

L1-L4

Question 14

Pneumonic to remember the nerves of the lumbar plexus?

Answer 14

I I Get Leftovers On Fridays
Iliohypogastric,Ilioinguinal,Genito-femoral,Lateral cutaneousnerve of the thigh,ObturatorandFemoral

Question 15

What nerves make up the brachial plexus?

Answer 15

Musculocutaneous, axillary, median, ulnar, radial, medial antebrachial cutaneous, medial brachial cutaneous

Question 16

What does the iliohypogastric innervate?

Answer 16

The internal oblique and transverus abdominus L1 (some of it does branch down from T12). Does provide sensory for the gluteal and pubic regions

Question 17

What does the lateral femoral cutaneous innervate?

Answer 17

The anterior and lateral thigh down to the level of the knee, L2/3. All sensory, no motor function

Question 18

What does the obturator innervate?

Answer 18

the muscles and skin of the medial thigh L2-4. Both sensory and motor. Sensory is the skin over the medial thigh.

Question 19

What does the femoral nerve innervate?

Answer 19

The muscles of the anterior thigh and the skin of the anterior thigh and medial leg. Motor and sensory. L2-4

Question 20

Where would you find the sacral plexus?

Answer 20

S1-4, though it does receive contributions from L4-5

Question 21

What does the sciatic nerve innervate?

Answer 21

Directly innervates muscles of the posterior thigh and indirectly innervates all muscles of the leg/foot. No directly sensory function though does have indirect sensory function of the lateral leg, heel and foot

Question 22

What innervates the axillary region?

Answer 22

The axillary nerve C5/6

Question 23

What is the sensory/motor function of the axillary nerve?

Answer 23

Sensory: the upper lateral cutaneous nerve of the arm, innervating the skin of the lower deltoid
Motor: the teres minor and deltoid muscles
C5/6

Question 24

What is the sensory/motor function of the musculocutaneous nerve?

Answer 24

Sensory: gives rise to the lateral cutaneous nerve of forearm and innervates the lateral aspect of the forearm
Motor: muscles in the anterior compartment of the arm (coracobrachialis, biceps and the brachialis)
C5-7

Question 25

What is the sensory/motor function of the median nerve?

Answer 25

Sensory: gives rise to the palmar cutaneous branch which innervates the lateral aspect of the palm and digital cutaneous branch -> the lateral three and a half fingers on the anterior (palmar) surface of the hand
Motor: muscles in the anterior compartment of the forearm (except the flexor carpi ulnaris and flexor digitorum), also innervate the thenar muscles and lateral two lumbricals in the hand
C6-T1

Question 26

What is the sensory/motor function of the radial nerve?

Answer 26

Sensory: innervates most of the skin of the posterior forearm, lateral aspect of the dorsum of the hand and dorsal surface of the lateral three and a half digits
Motor: triceps brachii and extensor muscles in the forearm
C5-T1

Question 27

What is the sensory/motor function of the ulnar nerve?

Answer 27

Sensory: medial one and a half fingers and the associated palm area
Motor: the flexor carpi ulnaris and medial half of the digitorum profundus, intrinsic muscles of the hand
C8-T1

Question 28

What innervate the internal oblique and transversus abdominus muscles and provide sensory innervation to skin on the superior antero-medial thigh and genital area?

Answer 28

Ilioinguinal
L1