Week I Nerve Roots

Question 0

What is the L4 dermatome?

Answer 0

Medial leg to medial malleolus

Question 1

What is the L4 DTR?

Answer 1

Patellar

Question 2

What muscle does L4 give motor innervation to?

Answer 2

Tibialis anterior

Question 3

What is the L5 DTR?

Answer 3

Medial hamstrings

Question 4

What is the L5 dermatome?

Answer 4

Lateral leg, dorsum of foot, web of foot (deep peroneal nerve)

Question 5

What muscle does L5 give motor innervation to?

Answer 5

Extensor hallucis longus

Question 6

What is the S1 DTR?

Answer 6

Achilles

Question 7

What is the S1 dermatome?

Answer 7

Lateral foot and plantar surface of the foot

Question 8

What muscle does S1 give motor innervation to?

Answer 8

Peroneus longus and brevis

Question 9

What is the C5 DTR?

Answer 9

Biceps brachii

Question 10

What is the C5 dermatome?

Answer 10

Lateral arm, deltoid tuberosity (axillary nerve)

Question 11

What muscle does C5 give motor innervation to?

Answer 11

Deltoids

Question 12

What is the C6 DTR?

Answer 12

Brachioradialis

Question 13

What is the C6 dermatome?

Answer 13

Lateral forearm and lateral hand, web of hand (radial nerve)

Question 14

What muscle does C6 give motor innervation to?

Answer 14

Biceps brachii, wrist extensors

Question 15

What is the C7 DTR?

Answer 15

Triceps brachii

Question 16

What is the C7 dermatome?

Answer 16

Midline of the hand

Question 17

What muscle does C7 give motor innervation to?

Answer 17

Triceps, wrist flexors, finger extensors

Question 18

What is the C8 DTR?

Answer 18

None

Question 19

What is the C8 dermatome?

Answer 19

Medial forearm and medial hand

Question 20

What muscle does C8 give motor innervation to?

Answer 20

Finger flexors, interossei (mixed with T1)

Question 21

What is the T1 DTR?

Answer 21

None

Question 22

What is the T1 dermatome?

Answer 22

Medial forearm and arm

Question 23

What muscle does T1 give motor innervation to?

Answer 23

Interossei (mixed with C8)