Question 1

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

Accepted Answer

To return interstitial fluid and leaked plasma proteins back to the blood

Question 2

Which structure is responsible for absorbing digested fats and delivering fatty lymph (chyle) to the blood?

Accepted Answer

Lacteals

Question 3

A patient presents with severe localized edema after cancer surgery. Which condition is most likely responsible?

Accepted Answer

Lymphedema

Question 4

Which of the following mechanisms does NOT contribute to lymph transport in the lymphatic system?

Accepted Answer

High-pressure pumping by the heart

Question 5

Which of the following is TRUE regarding lymphatic capillaries?

Accepted Answer

They are absent from bones, teeth, and bone marrow

Question 6

Which lymphatic duct drains lymph from the right upper arm and right side of the head and thorax?

Accepted Answer

Right lymphatic duct

Question 7

Which cell type is responsible for producing antibodies in the lymphatic system?

Accepted Answer

Plasma cells

Question 8

What is the main function of the lymph nodes?

Accepted Answer

To filter lymph and activate the immune response

Question 9

Which of the following best explains why lymph flow through lymph nodes is slow?

Accepted Answer

There are fewer efferent than afferent lymphatic vessels

Question 10

A patient with a ruptured spleen undergoes a splenectomy. Which organs will compensate for most of the spleen’s functions?

Accepted Answer

Liver and bone marrow

Question 11

Which of the following is a primary lymphoid organ?

Accepted Answer

Thymus

Question 12

Which of the following statements about the thymus is CORRECT?

Accepted Answer

It functions strictly in T lymphocyte maturation

Question 13

Which of the following is a function of MALT (mucosa-associated lymphoid tissue)?

Accepted Answer

Protecting mucosal surfaces from pathogens

Question 14

Which of the following best describes the role of dendritic cells in lymphoid tissue?

Accepted Answer

They capture antigens and deliver them to lymph nodes

Question 15

Which equation best represents the volume of interstitial fluid circulated by the lymphatic system per day?

Accepted Answer

$$V_{lymph} \approx 3\ \mathrm{L/day}$$

Question 16

Which of the following is a risk associated with the structure of tonsillar crypts?

Accepted Answer

They allow bacteria to enter tissues, increasing risk of infection

Question 17

Which lymphoid organ is most active and largest during childhood, then gradually atrophies with age?

Accepted Answer

Thymus

Question 18

Which of the following is NOT a function of the spleen?

Accepted Answer

Absorbing dietary fats from the intestine

Question 19

Which of the following best describes the difference between primary and secondary lymphoid organs?

Accepted Answer

Primary organs are where lymphocytes mature; secondary organs are where they encounter antigens

Question 20

A patient develops painful red lines under the skin due to inflamed lymphatic vessels. What is this condition called?

Accepted Answer

Lymphangitis

Lymphatic System and Lymphoid Organs: Structure and Function

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