Dermatomes Exam 1

Question 1

What dermatome is associated with the perineum?

Answer 1

S2-S4

Question 2

What dermatome is associated with the lateral foot?

Answer 2

S1

Question 3

What dermatome is associated with the knee and distal thigh?

Answer 3

L3-L4

Question 4

What dermatome is associated with the inguinal ligament?

Answer 4

T12

Question 5

What dermatome is associated with the umbilicus?

Answer 5

T10

Question 6

What dermatome is associated with the xyphoid process?

Answer 6

T6

Question 7

What dermatome is associated with the nipple?

Answer 7

T4

Question 8

What dermatome is associated with the inner forearm?

Answer 8

T1-T2

Question 9

What dermatome is associated with the thumb and index finger?

Answer 9

C6-C7

Question 10

What dermatome is associated with the shoulder and clavicle?

Answer 10

C4-C5

Question 11

What myotome is associated with neck flexion/extension?

Answer 11

C1/C2

Question 12

What myotome is associated with neck lateral flexion?

Answer 12

C3

Question 13

What myotome is associated with shoulder elevation?

Answer 13

C4

Question 14

What myotome is associated with shoulder abduction?

Answer 14

C5

Question 15

What myotome is associated with elbow flexion and wrist extension?

Answer 15

C6

Question 16

What myotome is associated with elbow extension and wrist flexion?

Answer 16

C7

Question 17

What myotome is associated with thumb extension and ulnar deviation?

Answer 17

C8

Question 18

What myotome is associated with abduction or adduction of hand intrinsics?

Answer 18

T1

Question 19

What myotome is associated with knee extension?

Answer 19

L3

Question 20

What myotome is associated with hip flexion?

Answer 20

L1/L2

Question 21

What myotome is associated with ankle dorsiflexion?

Answer 21

L4

Question 22

What myotome is associated with toe extension?

Answer 22

L5

Question 23

What myotome is associated with ankle plantar flexion/eversion, hip extension, knee flexion?

Answer 23

S1

Question 24

What myotome is associated with knee flexion?

Answer 24

S2

Question 25

What myotome is associated with rectal sphincter tone?

Answer 25

S3

Question 26

What portion of the spinal cord is covered by the cervical plexus?

Answer 26

C1-C4

Question 27

What portion of the spinal cord is covered by the interscalene?

Answer 27

C5-C7

Question 28

What portion of the spinal cord is covered by the brachial plexus?

Answer 28

C5-T1

Question 29

What are the main nerves of the arm?

Answer 29

axillary, musculocutaneous, median, radial, ulnar

Question 30

What portion of the spinal cord is covered by the lumbar plexus?

Answer 30

L1-L4

Question 31

What portion of the spinal cord is covered by the sacral plexus?

Answer 31

S1-S4 + L4&L5

Question 32

What portion of the spinal cord is covered by the sciatic nerve?

Answer 32

L4-S3