Reflexes and Dermatomes

Question 1

For the reflex, give the innervation and the nerve.

- Knee.

Answer 1

• Innervation: L3/4.

- Nerve: Femoral.

Question 2

For the reflex, give the innervation and the nerve.

- Biceps.

Answer 2

• Innervation: C5/6.

- Nerve: Musculocutaneous.

Question 3

For the reflex, give the innervation and the nerve.

- Triceps.

Answer 3

• Innervation: C7/8.

- Nerve: Radial.

Question 4

For the reflex, give the innervation and the nerve.

- Ankle.

Answer 4

• Innervation: S1/2.

- Nerve: Tibial.

Question 5

Give the dermatome of the structure.

- Nipple.

Answer 5

T4.

Question 6

Give the dermatome of the structure.

- Umbilicus.

Answer 6

T10.

Question 7

Give the dermatome of the structure.

- Thumb and index finger.

Answer 7

C6.

Question 8

Give the dermatome of the structure.

- Middle finger.

Answer 8

C7.

Question 9

Give the dermatome of the structure.

- Fourth and fifth finger.

Answer 9

C8.

Question 10

Give the dermatome of the structure.

- Upper thigh.

Answer 10

L1.

Question 11

Give the dermatome of the structure.

- Knee.

Answer 11

L3.

Question 12

Give the dermatome of the structure.

- Medial malleolus.

Answer 12

L4.

Question 13

Give the dermatome of the structure.

- Dorsum of the foot and toes 1-3.

Answer 13

L5.

Question 14

Give the dermatome of the structure.

- Toe 4+5 + lateral malleolus.

Answer 14

S1.

Question 15

Give the dermatome of the structure.

- Perineal region.

Answer 15

S3, 4, 5.