Dermatomes Flashcards Preview

SCT3 Neurology Topic 4 > Dermatomes > Flashcards

Flashcards in Dermatomes Deck (22)
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1
Q

A dermatome is an area of skin supplied by sensory nerve fibers originating from where?

A

A SINGLE DORSAL NERVE ROOT
of
A SINGLE SPINAL NERVE

2
Q

Limb organization of dermatomes is more complex as a result of what?

A

EMBRYOLOGICAL DEVELOPMENT

3
Q

Do dermatomes have distinct borders?

A

NO

considerable overlap of innervation

4
Q

Which dermatome supplies sensation to the lateral shoulder and arm?

A

C5

5
Q

Which dermatome supplies sensation to the thumb, index finger (radial border)?

A

C6

6
Q

Which dermatome supplies sensation to the middle finger?

A

C7

7
Q

Which dermatome supplies sensation to the digiti minimi?

A

C8

8
Q

Which dermatome supplies sensation to the medial elbow?

A

T1

9
Q

Which dermatome’s intercostal nn form segmental strips on thorax?

A

T2 - T12

10
Q

Which dermatome supplies sensation across the nipples?

A

T4

11
Q

Which dermatome goes across the umbilicus?

A

T10

12
Q

Which dermatome goes across the upper edge of the pubic bone?

A

T12

13
Q

Which dermatome supplies sensation to immediately below the inguinal ligament?

A

L1

14
Q

Which dermatome supplies sensation to the middle anterior thigh?

A

L2

15
Q

Which dermatome supplies sensation to the anterior thigh imm proximal to the patella?

A

L3

16
Q

Which dermatome supplies sensation to the patella, medial leg, medial foot?

A

L4

17
Q

Which dermatome supplies sensation to the lateral leg, foot dorsum, web space of first 2 toes?

A

L5

18
Q

Which dermatome supplies sensation to the lateral malleolus, and lateral/ plantar foot?

A

S1

19
Q

Which dermatome supplies sensation to the back of leg and thigh?

A

S2

20
Q

Which dermatome supplies sensation to the buttocks?

A

S3

21
Q

Which dermatome supplies sensation to the perineal region?

A

S4

22
Q

Which dermatome supplies sensation to around the anus?

A

S5