Question 1

Which of the following best describes the primary function of the lymphoid system?

Accepted Answer

Defending the body against environmental hazards and internal threats

Question 2

Which of the following is NOT a component of the lymphoid system?

Accepted Answer

Pancreas

Question 3

Lymph is most similar in composition to which of the following?

Accepted Answer

Blood plasma, but with less protein

Question 4

Which of the following statements about lymphatic vessels is correct?

Accepted Answer

They begin in peripheral tissues and end at veins

Question 5

Which cell type is primarily responsible for cell-mediated immunity?

Accepted Answer

T-cells

Question 6

Which of the following is a function of the spleen?

Accepted Answer

Filtration of blood and initiation of immune responses

Question 7

Which of the following best describes the role of lymphatic valves?

Accepted Answer

They prevent the backflow of lymph

Question 8

Which of the following is a correct pathway for lymph flow?

Accepted Answer

Lymphatic capillaries → small lymphatic vessels → lymphatic trunks → collecting ducts

Question 9

Which of the following is NOT a function of lymph nodes?

Accepted Answer

Producing red blood cells

Question 10

Which of the following statements about lymphocytes is true?

Accepted Answer

B-cells are responsible for antibody-mediated immunity

Question 11

A blockage in the right lymphatic duct would most likely cause swelling in which area?

Accepted Answer

Right arm

Question 12

Which of the following best explains why lymphatic capillaries are highly permeable?

Accepted Answer

They have overlapping endothelial cells that function as one-way valves

Question 13

Which of the following is a correct statement about the thoracic duct?

Accepted Answer

It drains lymph from the left side of the body superior to the diaphragm and both lower limbs

Question 14

Which of the following is a real-life consequence of lymphatic vessel damage after surgery?

Accepted Answer

Localized edema due to impaired lymph drainage

Question 15

Which of the following best describes the relationship between lymphatic and cardiovascular systems?

Accepted Answer

Lymphatic vessels return excess interstitial fluid to the bloodstream

Lymphatic System and Immune System: Structure and Function

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