Chapter 1: Anatomy

Question 1

Name the dermatomes of Nerve Root C2

Answer 1

temple, forehead, occiput

Question 2

Name the dermatomes of Nerve Root C3

Answer 2

entire neck, posterior cheek, temporal area, under the mandible

Question 3

Name the dermatomes of Nerve Root C4

Answer 3

shoulder area, clavicular area, upper scapular area

Question 4

Name the dermatomes of Nerve Root C5

Answer 4

deltoid area, anterior aspect of the entire arm to the base of the thumb

Question 5

Name the dermatomes of Nerve Root C6

Answer 5

anterior arm (laterally), radial side of hand to thumb

Question 6

Name the dermatomes of Nerve Root C7

Answer 6

lateral arm and forearm to index and middle finger

Question 7

Name the dermatomes of Nerve Root C8

Answer 7

medial arm and forearm to ring and little fingers

Question 8

Name the dermatomes of Nerve Root T1

Answer 8

medial side of the arm and forearm to the base of the little finger

Question 9

Name the dermatomes of Nerve Root L1

Answer 9

back, over trochanter, and groin

Question 10

Name the dermatomes of Nerve Root L2

Answer 10

back, front of the thigh to knee

Question 11

Name the dermatomes of Nerve Root L3

Answer 11

back , upper buttock, anterior thigh and knee, medial lower leg

Question 12

Name the dermatomes of Nerve Root L4

Answer 12

medial buttock, lateral thigh, medial leg, over the patella, big toe

Question 13

Name the dermatomes of Nerve Root L5

Answer 13

buttock, posterior and lateral thigh, lateral aspect of leg, lateral heel, dorsum of foot, medial half of sole, second and third toes

Question 14

Name the dermatomes of Nerve Root S1

Answer 14

buttock, thigh, posterior leg, small toe

Question 15

Name the dermatomes of Nerve Root S2

Answer 15

buttock, thigh, posterior leg, medial heel

Question 16

Name the function of myotome C4

Answer 16

shoulder elevation

Question 17

Name the function of myotome C5

Answer 17

shoulder abduction and shoulder external rotation

Question 18

Name the function of myotome C6

Answer 18

elbow flexion and wrist extension

Question 19

Name the function of myotome C7

Answer 19

elbow extension and wrist flexion

Question 20

Name the function of myotome C8

Answer 20

thumb extension and ulnar deviation

Question 21

Name the function of myotome T1

Answer 21

hand intrinsic abduction and adduction

Question 22

Name the function of myotome L2

Answer 22

hip flexion

Question 23

Name the function of myotome L3

Answer 23

knee extension

Question 24

Name the function of myotome L4

Answer 24

ankle dorsiflexion

Question 25

Name the function of myotome L5

Answer 25

great toe extension

Question 26

Name the function of myotome S1

Answer 26

ankle plantar flexion and hip extension

Question 27

Name the function of myotome S2

Answer 27

knee flexion

Question 28

Name the reflex of nerve root C5

Answer 28

deltoid

Question 29

Name the reflex of nerve root C6

Answer 29

biceps and brachioradialis

Question 30

Name the reflex of nerve root C7

Answer 30

triceps

Question 31

Name the reflex of nerve root C8

Answer 31

pronator quadrassi

Question 32

Name the reflex of nerve root T1

Answer 32

abductor digiti minimi

Question 33

Name the reflex of nerve root L3-L4

Answer 33

patellar

Question 34

Name the reflex of nerve root L4-L5

Answer 34

Tibialis posterior

Question 35

Name the reflex of nerve root L5-S1

Answer 35

Medial hamstring

Question 36

Reflex of S1-S2

Answer 36

Lateral hamstring / Achilles

Question 37

Where is motor weakness sign seen in C5 level

Answer 37

Deltoid

Question 38

Where is motor weakness sign seen in C6 level

Answer 38

Biceps Brachii (biceps brachii reflex weak or absent)

Question 39

Where is motor weakness sign seen in C7 level

Answer 39

Triceps brachii (triceps brachii reflex weak or absent)

Question 40

Where is motor weakness sign seen in C8 level

Answer 40

Interossei

Question 41

Where is motor weakness sign seen in L4 level

Answer 41

Quadriceps + tibialis anterior (patella tendon / knee jerk reflex weak or absent)

Question 42

Where is motor weakness sign seen in L5 level

Answer 42

Extensor hallucis longus

Question 43

Where is motor weakness sign seen in S1 level

Answer 43

Gastrocnemius (Achilles tendon / ankle jerk reflex weak or absent)