Session 4: Lymphatic System

Question 1

How many litres of interstitial fluid does the lymphatic system collect per day?

Answer 1

3

Question 2

What helps propel lymph along?

Answer 2

1. Skeletal muscle movement
2. Changes in pressure of the thorax
3. Pulsations of adjacent arteries

Question 3

TRUE OR FALSE: There are no lymphatics in the CNS.

Answer 3

TRUE

Question 4

What 3 structures fall under the category lymphatic nodules?

Answer 4

1. Payers patches
2. Vermiform appendix
3. Tonsils

Question 5

Name 3 lymphatic organs.

Answer 5

1. Spleen
2. Lymph nodes
3. Thymus

Question 6

What is the function of the lymph nodes?

Answer 6

To filter lymph as it percolates through on its way to the vascular system

Question 7

Where do afferent lymphatic vessels enter a lymph node?

Answer 7

Convex surface

Question 8

Where do efferent lymphatic vessels leave a lymph node?

Answer 8

Hilum

Question 9

Where do the feeding arteries and draining vein enter and leave the node via?

Answer 9

Hilum

Question 10

What is lymphadenopathy?

Answer 10

Swelling of lymph nodes as germinal centres within the node full with T lymphocytes

Question 11

What are the 2 main functions of the spleen?

Answer 11

• immune functions

- haemopoietic functions

Question 12

Name 4 immune functions of the spleen.

Answer 12

1. Antigen presentation by APC
2. Activation and proliferation of B and T lymphocytes
3. Production of antibodies
4. Removal of macromolecular structures (via macrophages)

Question 13

Name 2 haemopoietic functions of the spleen.

Answer 13

1. Destruction of old, damaged or abnormal erythrocytes

2. Reterval of iron from the haemoglobin of erythrocytes

Question 14

Where is the thymus located?

Answer 14

Superior mediastinum

Question 15

What is the main function of the thymus?

Answer 15

Maturation of bone marrow derived stem cells into T cells