Objective 14 - Dermatomes, Myotomes, DTRs

Question 1

Myotome: C5

Muscle? Action?

Answer 1

Biceps brachialis

Elbow flexors

Question 2

Myotome: C6

Muscle? Action?

Answer 2

Extensor carpi radialis

Wrist extensors

Question 3

Myotome: C7

Muscle? Action?

Answer 3

Triceps

Elbow extensors

Question 4

Myotome: C8

Muscle? Action?

Answer 4

Flexor digitorum profundus

Finger flexors

Question 5

Myotome: T1

Muscle? Action?

Answer 5

Abductor digiti minimi

Small finger abductor

Question 6

Myotome: L2

Muscle? Action?

Answer 6

Iliopsoas

Hip flexors

Question 7

Myotome: L3

Muscle? Action?

Answer 7

Quadriceps

Knee extensors

Question 8

Myotome: L4

Muscle? Action?

Answer 8

Tibialis anterior

Ankle dorsiflexors

Question 9

Myotome: L5

Muscle? Action?

Answer 9

Extensor hallucis longus

Long toe extensors

Question 10

Myotome: S1

Muscle? Action?

Answer 10

Gastrocnemius

Ankle plantarflexors

Question 11

DTR: Biceps
Muscles?
Spinal segment? Peripheral nerve?

Answer 11

Biceps brachii
C5
Musculocutaneous N.

Question 12

DTR: Brachioradialis
Muscles?
Spinal segment? Peripheral nerve?

Answer 12

Bracioradialis
C6
Radial

Question 13

DTR: Triceps
Muscles?
Spinal segment? Peripheral nerve?

Answer 13

Triceps brachii
C7
Radial

Question 14

DTR: Patellar
Muscles?
Spinal segment? Peripheral nerve?

Answer 14

Quadriceps femoris
L4
Femoral

Question 15

DTR: Babinski
Muscles?
Spinal segment? Peripheral nerve?

Answer 15

Toe extensor
L4-L5, S1-S2
Tibial

Question 16

DTR: Achilles
Muscles?
Spinal segment? Peripheral nerve?

Answer 16

Gastrocnemius, soleus
S1
Tibial

Question 17

Dermatome: C2

Answer 17

Occipital protuberance

Question 18

Dermatome: C3

Answer 18

Supraclavicular fossa

Question 19

Dermatome: C4

Answer 19

Superior AC joint

Question 20

Dermatome: C5

Answer 20

Lateral side of antecubital fossa

Question 21

Dermatome: C6

Answer 21

Thumb

Question 22

Dermatome: C7

Answer 22

Middle finger

Question 23

Dermatome: C8

Answer 23

Little finger

Question 24

Dermatome: T1

Answer 24

Medial (ulnar) side of antecubital epicondyle

Question 25

Dermatome: T2

Answer 25

Apex of axilla

Question 26

Dermatome: T4

Answer 26

Nipple line

Question 27

Dermatome: T6

Answer 27

Xiphoid at mid-clavicular line

Question 28

Dermatome: T10

Answer 28

Umbilicus

Question 29

Dermatome: T12

Answer 29

Inguinal ligament

Question 30

Dermatome: L2

Answer 30

Mid-anterior thigh

Question 31

Dermatome: L3

Answer 31

Medial femoral condyle

Question 32

Dermatome: L4

Answer 32

Medial malleolus

Question 33

Dermatome: L5

Answer 33

Dorsum of foot at 3rd MTP joint

Question 34

Dermatome: S1

Answer 34

Lateral heel

Question 35

Dermatome: S2

Answer 35

Popliteal fossa

Question 36

Dermatome: S3

Answer 36

Ischial tuberosity

Question 37

Dermatome: S4, S5

Answer 37

Perianal area