Quiz 1 - Dermatomes

Question 1

C2

Answer 1

At least one cm lateral to the occipital protuberance at the base of the skull. Alternately, it can be located at least 3 cm behind the ear.

Question 2

C3

Answer 2

In the supraclavicular fossa, at the midclavicular line.

Question 3

C4

Answer 3

Over the acromioclavicular joint.

Question 4

C5

Answer 4

On the lateral (radial) side of the antecubital fossa just proximal to the elbow (see image below).

Question 5

C6

Answer 5

On the dorsal surface of the proximal phalanx of the thumb.

Question 6

C7

Answer 6

On the dorsal surface of the proximal phalanx of the middle finger.

Question 7

C8

Answer 7

On the dorsal surface of the proximal phalanx of the little finger.

Question 8

T1

Answer 8

On the medial (ulnar) side of the antecubital fossa, just proximal to the medial epicondyle of the humerus

Question 9

T2

Answer 9

At the apex of the axilla

Question 10

T4

Answer 10

At the midclavicular line and the fourth intercostal space, located at the level of the nipples.

Question 11

T10

Answer 11

At the midclavicular line, located at the level of the umbilicus.

Question 12

T12

Answer 12

At the midclavicular line, over the midpoint of the inguinal ligament.