Question 1

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

Accepted Answer

To transport oxygen from the lungs to tissues

Question 2

A patient has a blockage in the thoracic duct. Which region of the body would most likely experience impaired lymph drainage?

Accepted Answer

The lower limbs and left upper quadrant

Question 3

Which structure is responsible for filtering lymph and removing bacteria and debris?

Accepted Answer

Lymph node

Question 4

Lymphatic capillaries are absent in which of the following tissues?

Accepted Answer

Central nervous system and cartilage

Question 5

Which of the following best describes the flow of lymph through the lymphatic system?

Accepted Answer

Lymph capillaries → lymphatics → lymph node → lymphatics → cisterna chyli → thoracic duct

Question 6

Which equation best represents the net movement of fluid in and out of capillaries, relevant to lymph formation?

Accepted Answer

Net filtration = $$ (P_{cap} - P_{if}) - (\pi_{cap} - \pi_{if}) $$

Question 7

Which of the following statements about lymph nodes is TRUE?

Accepted Answer

Lymph nodes have more afferent vessels than efferent vessels

Question 8

A patient with a damaged spleen may have difficulty with which of the following?

Accepted Answer

Removing worn-out red blood cells

Question 9

Which lymphatic structure is responsible for the maturation of T-lymphocytes?

Accepted Answer

Thymus

Question 10

Which of the following is a real-life application of lymphangiography?

Accepted Answer

Locating lymph nodes for radiation therapy

Question 11

Which of the following best describes the role of chylomicrons in the lymphatic system?

Accepted Answer

They transport absorbed lipids from the intestine to the blood via the lymph

Question 12

Which of the following is a non-specific first line of defense in the immune system?

Accepted Answer

Surface membrane barriers such as skin and mucus

Question 13

Which equation would you use to calculate the volume of interstitial fluid returned to the blood daily by the lymphatic system?

Accepted Answer

$$ V_{lymph} = 3 	ext{ liters/day} $$

Question 14

Which of the following is TRUE regarding the right lymphatic duct?

Accepted Answer

It drains lymph from the upper right quadrant of the body

Question 15

Which of the following best explains why lymphatic capillaries can absorb proteins and larger particles?

Accepted Answer

Their overlapping endothelial cells form one-way valves that open under pressure

Question 16

Which of the following is a function of lymph nodules?

Accepted Answer

Production of lymphocytes to defend against disease

Question 17

Which of the following is a specific defense mechanism in the immune system?

Accepted Answer

Activation of T and B lymphocytes

Question 18

A patient with a deficiency in thymosin would most likely experience which of the following?

Accepted Answer

Impaired maturation of T-lymphocytes

Question 19

Which of the following best describes the relationship between the lymphatic system and the circulatory system?

Accepted Answer

The lymphatic system returns excess interstitial fluid and plasma proteins to the blood

Question 20

Which of the following is TRUE regarding the spleen?

Accepted Answer

It is not vital to life but performs important functions such as blood filtration and storage

The Lymphatic System and Immunity: Structured Study Notes

Study Guide - Practice Questions