Peripheral nerve anatomy

Question 1

what does C2 supply

Answer 1

back of scalp and laryngeal prominence

Question 2

what does C3 supply

Answer 2

back of neck and jugular notch

Question 3

what does C4 supply

Answer 3

shoulder tip/clavicle

Question 4

what does C5 supply

Answer 4

badge patch

Question 5

what does C6 supply

Answer 5

thumb

Question 6

what does C7 supply

Answer 6

middle finger

Question 7

what does C8 supply

Answer 7

little finger

Question 8

what does T1 supply

Answer 8

medial forearm

Question 9

what does T2 supply

Answer 9

medial arm and sternal angle

Question 10

what does T4 supply

Answer 10

nipple

Question 11

what does T8 supply

Answer 11

xiphoid process

Question 12

what does T10 supply

Answer 12

umbilicus

Question 13

what does T12 supply

Answer 13

pubic symphysis

Question 14

what does L1 supply

Answer 14

groin

Question 15

what does L2 supply

Answer 15

anterior thigh

Question 16

what does L3 supply

Answer 16

knee

Question 17

what does L4 supply

Answer 17

medial malleolus

Question 18

what does L5 supply

Answer 18

dorsum of foot

Question 19

what does S1 supply

Answer 19

heel of foot

Question 20

what does S2 supply

Answer 20

posterior knee

Question 21

what does S3 supply

Answer 21

buttock

Question 22

what does S4 supply

Answer 22

perineum

Question 23

what does S5 supply

Answer 23

perianal skin

Question 24

sensory supply to neck

Answer 24

posterior - post rami C2-8
anterolateral - lesser occipital C2
greater auricular C2,3
Transverse cervical C2,3
Supraclavicular C3,4

Question 25

peripheral cutaneous innervation to the trunk

Answer 25

posterior - post rami upper anterolateral - intercostal nerves lower anterolateral - subcostal T12 lower is iliohypogastric and ilioinguinal - divided ant ramus of L1

Question 26

Spinal roots associated with supraclavicular nerves

Answer 26

C3/4

Question 27

Spinal roots associated with axillary nerves

Answer 27

C5/6

Question 28

Spinal roots associated with cutaneous branch of muculocutaneous

Answer 28

C5/6/7

Question 29

Spinal roots associated with radial nerve

Answer 29

C5/6/7/8/T1

Question 30

Spinal roots associated with ulnar nerve

Answer 30

C7/8/T1

Question 31

Spinal roots associated with median nerve

Answer 31

C5/6/7/8/T1

Question 32

Spinal roots associated with ilioinguinal nerve

Answer 32

L1

Question 33

Spinal roots associated with genitofemoral nerve

Answer 33

L1/2

Question 34

Spinal roots associated with lateral cutaneous nerve of thigh

Answer 34

L2/3

Question 35

Spinal roots associated with posterior cutaneous nerve of thigh

Answer 35

S1/2/3

Question 36

Spinal roots associated with femoral nerve

Answer 36

L2/3/4

Question 37

Spinal roots associated with obturator nerve

Answer 37

L2/3/4

Question 38

Spinal roots associated with saphenous nerve

Answer 38

L3/4

Question 39

Spinal roots associated with sural nerve

Answer 39

S1/2

Question 40

Spinal roots associated with superficial fibular nerve

Answer 40

L4/5/S1

Question 41

Spinal roots associated with deep fibular nerve

Answer 41

L5

Question 42

Spinal roots associated with tibial nerve

Answer 42

L4/5 S1/2/3

Question 43

reflex testing of the ankle tests which spinal level

Answer 43

S1

Question 44

reflex testing of the knee tests which spinal level

Answer 44

L4

Question 45

reflex testing of spininator/brachioradialis tests which spinal level

Answer 45

C6

Question 46

reflex testing of biceps tests which spinal level

Answer 46

C5 and partly C6

Question 47

reflex testing of triceps tests which spinal level

Answer 47

C7

Question 48

describe the mechanism of the patellar reflex

Answer 48

``` quads fibres/patellar ligament stretch AP inititaiton in femoral nerve conducted to dorsal corn of L4 axons pass to anterior horn to synapse on LMN to reach quads NMJ muscle contracts ```

Question 49

myotomes of the shoulder

Answer 49

Abduction C5 | adduction C7

Question 50

myotomes of the elbow

Answer 50

flexion C5,6 | extension C7

Question 51

myotomes of the finger joints

Answer 51

flexion C8 extension C7 abduction T1 adduction T1

Question 52

myotomes of the wrist

Answer 52

flexion C6, C7 | extension C6, C7

Question 53

myotomes of the hip

Answer 53

flexion L2,3 | extension L5,S1

Question 54

myotomes of the knee

Answer 54

flexion L5,S1 | extension L3,4

Question 55

myotomes of the ankle

Answer 55

dorsiflexionL4,5 plantarflexion S1,2 inversion L4 eversion L5,S1

Question 56

motor innervation given by axillary nerve

Answer 56

deltoid | teres minor

Question 57

motor innervation given by musculocutaneous nerve

Answer 57

biceps brachii, coracobrachialis | brachialis

Question 58

motor innervation given by radial nerve

Answer 58

``` triceps brachioradialis supinator all carpus extensors, digits abductor pollicis longus ```

Question 59

motor innervation given by ulnar nerve

Answer 59

carpi ulnaris, medial half of FPL, adductor pollicis, hypothenar, lumbricals 3,4 and all interossei

Question 60

motor innervation given by median nerve

Answer 60

pronator teres, flexor carpi radialis, palmaris longus, flexor digitorum superficialis, lateral half of flexor digitorum profundus, FLP, thenars and lumbricals 1,2

Question 61

motor innervation given by femoral nerve

Answer 61

quads femoris sartorius pectineus

Question 62

motor innervation given by obturator nerve

Answer 62

medial compartment of thigh, adductors and gracilis

Question 63

motor innervation given by common fib division sciatic

Answer 63

biceps femoris short head

Question 64

motor innervation given by superficial division fibular

Answer 64

fib longus and brevis

Question 65

motor innervation given by deep division fibular

Answer 65

tib anterior, EDL, EHL, fib tertius EDB EHB

Question 66

motor innervation given by tibial division sciatic

Answer 66

semimembranosus, semiteendinosus, LH biceps femoris gastrocnemius, soleus, plantatus, popliteus, tib posterior intrinsic muscles foot and digit flexors