Chap 1 - Dermatomes, Myotomes Flashcards

1
Q

C1 Dermatome

Myotome

A

Dermatome: Vertex of Skull
Myotome: None

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2
Q

C2 Dermatome

Myotome

A

Dermatome: Temple, forehead, occiput
Myotome: Longus Colli, SCM, Rectus Capitis

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3
Q

C3 Dermatome and Myotome

A

Dermatome: Entire cheek, Posterior cheek, temporal area, prolongation under mandible
Myotome:Traps, splenius capitis

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4
Q

C4 Dermatome and Myotome

A

Dermatome: Shoulder area, clavicle, upper scapular area
Myotome: Trapezius, Levator scapulae

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5
Q

C5

A

Dermatome: Deltoid area, ant aspect of arm to base of thumb
Myotome: Supraspinatus, infraspinatus, deltoid, biceps

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6
Q

C6

A

Dermatome: Anterior arm, radial side of hand to thumb and index finger
Myotome: Biceps, supinator, wrist extensors

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7
Q

C7

A

Dermatome: Lateral arm and forearm to index long and ring fingers
Myotome: Triceps, wrist flexors

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8
Q

C8

A

Dermatome: Medial arm and forearm to long, ring and little fingers
Myotome: Ulnar deviators, thumb extensors, thumb adductors

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9
Q

T1

A

Dermatome: Medial side of forearm to base of little finger
Myotome: none

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10
Q

T3-T6

A

Dermatome: Upper thorax
Myotome: none

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11
Q

T5 and T 7

A

Dermatome: Costal margin
Myotome: None

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12
Q

T8-T12

A

Dermatome: Abdomen and lumbar Region
Myotome: None

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13
Q

L1

A

Dermatome: Back over trochanter and groin
Myotome: None

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14
Q

L2

A

Dermatome: Back front of thigh to knee
Myotome: psoas, hip adductors

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15
Q

L3

A

Dermatome: Back upper buttock anterior thigh and knee, medial lower leg
Myotome:psoas, quadriceps, thigh atrophy

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16
Q

L4

A

Dermatome: Medial buttock, lateral thigh medial leg dorsum of foot big toe
Myotome: Tibialis anterior, extensor hallucis

17
Q

L5

A

Dermatome: Buttock post and lateral thigh, lat aspect of leg, dorsum of foot, medial half of sole, first, second and third toes
Myotome:Extensor hallucis, peroneals, g medius, dorsiflexors, hamstring and calf atrophy

18
Q

S1

S2

A

Dermatome: Buttock, thigh and leg posterior
Myotome: calf, hamstring, wasting of gluteals, peroneals, plantar flexors

S2 same as S1 except no peroneal weakness

19
Q

S3

A

Dermatome: Groin, medial thigh to knee
Myotome: None

20
Q

S4

A

Dermatome: Perineum, genitals lower sacrum
Myotome: Bladder, rectum