Question 1

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

Accepted Answer

Production of red blood cells to increase oxygen transport

Question 2

Lymphatic capillaries differ from blood capillaries in that they:

Accepted Answer

Are closed at one end, forming blind-ended pockets

Question 3

Which of the following best explains how lymphatic vessels ensure one-way flow of lymph toward the trunk?

Accepted Answer

They possess valves and rely on the muscle pump

Question 4

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

Accepted Answer

Left leg and left side of the thorax

Question 5

Which of the following statements about lymph is correct?

Accepted Answer

Lymph is similar to plasma but contains fewer proteins

Question 6

If the lymphatic system fails to return interstitial fluid to the bloodstream, what is the most likely physiological consequence?

Accepted Answer

Edema in peripheral tissues

Question 7

Which of the following best describes the structure of lymphatic capillaries?

Accepted Answer

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

Question 8

A lipid-soluble vitamin absorbed in the small intestine is transported to the bloodstream via which of the following?

Accepted Answer

Lymphatic vessels

Question 9

Which of the following mechanisms does NOT contribute to the movement of lymph through lymphatic vessels?

Accepted Answer

High pressure generated by the heart

Question 10

A patient with a congenital absence of lymphatic valves would most likely experience which of the following?

Accepted Answer

Backflow of lymph and tissue swelling

Question 11

Which of the following best explains why lymphatic capillaries are especially important in the small intestine?

Accepted Answer

They collect dietary lipids and lipid-soluble vitamins for transport

Question 12

Which of the following is a key difference between lymphatic and blood capillaries?

Accepted Answer

Lymphatic capillaries are closed at one end

Question 13

A person suffers a deep cut that damages several lymphatic capillaries in the leg. Which of the following is the most likely immediate effect?

Accepted Answer

Accumulation of interstitial fluid in the affected area

Question 14

Which of the following best describes the role of overlapping endothelial cells in lymphatic capillaries?

Accepted Answer

They act as one-way valves to permit entry of interstitial fluid

Question 15

Which of the following statements about the composition of lymph is correct?

Accepted Answer

Lymph is similar to plasma but contains fewer proteins

Lymphatic System: Structure and Functions

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