Dermatomes and Lymphatic Drainage of the Upper Limb

Question 1

Identify the dermatones labelled 1-9

Answer 1

1- C4

2- C5

3- C6

4- C7

5- C8

6- T1

7- T2

8- T3

9- T4

Question 2

Identify the dermatomes labelled 1-10

Answer 2

1- C3

2- C4

3- C5

4- C6

5- C7

6- C8

7- T1

8- T2

9- T3

10- T4

Question 3

Into which lymph nodes do all lymphatic vessels from the upper limb drain?

Answer 3

The axillary lymph nodes

Question 4

What are the distinct groups of axillary lymph nodes?

Answer 4

Anterior/pectoral group

Posterior/subscapular group

Apical group

Central group

Lateral group

Question 5

Where do the pectoral lymph nodes receive lymph from?

Answer 5

From the anterior thoracic wall, including the breast

Question 6

Where do the subscapular lymph nodes receive lymph from?

Answer 6

Posterior thoracic wall and scapular region

Question 7

Where do the lateral lymph nodes receive lymph from?

Answer 7

Receives majority of lymph from upper limb

Question 8

Where do the central lymph nodes receive lymph from?

Answer 8

From the lateral, subscapular and pectoral groups

Question 9

Where do the apical lymph nodes receive lymph from?

Answer 9

From the central group and so from all axillary groups