Question 1

Which of the following is NOT a basic function of the lymphatic system?

Accepted Answer

Production of red blood cells

Question 2

Lymphatic vessels are described as 'blind-ended' tubes. What does this mean in terms of their structure and function?

Accepted Answer

They begin as closed tubes in tissues, not connected to arteries or veins at their starting point

Question 3

Which lymphatic trunk is responsible for draining fat-containing lymph from the small intestine?

Accepted Answer

Intestinal trunk

Question 4

If a patient has a blockage in the thoracic duct, which regions of the body would most likely experience impaired lymph drainage?

Accepted Answer

Lower body and left side of upper body

Question 5

Which lymphoid organ is primarily responsible for the maturation of T cells?

Accepted Answer

Thymus

Question 6

A patient presents with swelling in the lower limbs due to lymphatic obstruction. Which lymphatic trunk is most likely affected?

Accepted Answer

Lumbar trunk

Question 7

Which of the following best describes the role of lymph nodes in immunity?

Accepted Answer

They filter pathogens from lymph and house leukocytes for immune response

Question 8

Which equation best represents the net filtration pressure ($$NFP) $$that favors filtration in blood capillaries?

Accepted Answer

$$NFP = (HP_c - HP_i) - (OP_c - OP_i)$$

Question 9

Which lymphatic structure receives lymph from the lower limbs and pelvic area?

Accepted Answer

Lumbar trunk

Question 10

Which of the following statements about the cisterna chyli is correct?

Accepted Answer

It is a large, swollen vessel that receives lymph from the intestinal and lumbar trunks

Question 11

Which lymphatic duct drains lymph into the junction of the right internal jugular and right subclavian veins?

Accepted Answer

Right lymphatic duct

Question 12

Which of the following is a correct pairing of lymphoid organ and its function?

Accepted Answer

Thymus: generation of functional T cells

Question 13

Which lymphatic organ contains both red pulp and white pulp, and what are their respective functions?

Accepted Answer

Spleen; red pulp destroys old erythrocytes, white pulp filters pathogens and contains leukocytes

Question 14

Which of the following best explains why pathogens have an easier time entering lymphatic capillaries than blood capillaries?

Accepted Answer

Lymphatic capillaries have larger gaps between endothelial cells

Question 15

Which of the following is NOT a component of lymphatic tissue and organs?

Accepted Answer

Pancreas

Question 16

Which lymphatic trunk receives lymph from the thoracic cavity?

Accepted Answer

Bronchomediastinal trunk

Question 17

A patient has a surgical removal of the spleen (splenectomy). Which of the following consequences is most likely?

Accepted Answer

Impaired destruction of old erythrocytes and reduced ability to filter pathogens from blood

Question 18

Which lymphatic organ is most likely to be affected in a newborn with severe immunodeficiency due to lack of functional T cells?

Accepted Answer

Thymus

Question 19

Which of the following best describes the flow of lymph from the lower limbs to the venous circulation?

Accepted Answer

Lumbar trunks → cisterna chyli → thoracic duct → left subclavian vein

The Lymphatic System and Immunity: Structure and Function

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