Myotomes

Question 1

Dermatomes

Answer 1

Skin area innervated by the sensory fibers of a single nerve root

Question 2

Myotome

Answer 2

A group of muscles primarily innervated by the motor fibers of a single nerve root

Question 3

C1 and C2

Answer 3

Cervical flexion and extension

Question 4

C3

Answer 4

Cervical lateral flexion

Question 5

C4

Answer 5

Shoulder elevation

Question 6

C5

Answer 6

Shoulder abduction

Question 7

C6

Answer 7

Elbow flexion and wrist extension

Question 8

C7

Answer 8

Elbow extension and wrist flexion

Question 9

C8

Answer 9

Thumb extension

Question 10

T1

Answer 10

Finger abduction/adduction

Question 11

L1 and L2

Answer 11

Hip flexion

Question 12

L3

Answer 12

Knee extension

Question 13

L4

Answer 13

Ankle dorsiflexion

Question 14

L5

Answer 14

Knee flexion and great toe extension

Question 15

S1

Answer 15

Plantarflexion and hip extension

Question 16

Plexus

Answer 16

Complex nerve networks in which fibers from several different spinal nerves are reorganized to form specific peripheral nerves

Question 17

Ventral ramus

Answer 17

Spinal nerve branches split, one goes anterior and the other posterior (dorsal)
- most in thoracic and lumbar split into autonomic and somatic pathways

Question 18

Brachial plexus

Answer 18

C5-T1

Question 19

Lumbosacral plexus

Answer 19

L1-S1