Question 1

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

Accepted Answer

Production of erythrocytes

Question 2

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

Accepted Answer

They begin as closed tubes in tissues, allowing fluid to enter but not exit at the origin

Question 3

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

Accepted Answer

Intestinal trunk

Question 4

A patient develops severe swelling in her arm after lymph node removal during breast cancer surgery. What is the most likely diagnosis?

Accepted Answer

Lymphedema

Question 5

Which feature of lymphatic vessels helps compensate for the lack of a central pump?

Accepted Answer

All of the above

Question 6

What is the role of lacteals in the lymphatic system?

Accepted Answer

They collect dietary fats in the small intestine

Question 7

Which of the following cells is NOT typically found in reticular tissue of lymphoid organs?

Accepted Answer

Erythrocytes

Question 8

A cluster of lymphoid tissue found in the mucosa of the small intestine is called:

Accepted Answer

Peyer's patch

Question 9

Which structure is responsible for trapping pathogens in the oral and nasal cavities, and may become inflamed in tonsillitis?

Accepted Answer

Tonsillar crypts

Question 10

Which lymph node cluster would most likely be enlarged in a patient with a throat infection?

Accepted Answer

Cervical lymph nodes

Question 11

What is the correct sequence of lymph flow through a lymph node?

Accepted Answer

Afferent vessel → subcapsular sinus → cortical sinuses → medullary sinuses → efferent vessel

Question 12

Which of the following best describes the function of the spleen's red pulp?

Accepted Answer

Destroys old erythrocytes

Question 13

Why does the thymus atrophy with age, and what is the consequence for immune function?

Accepted Answer

It is replaced by fat, but immune function is maintained due to T cells produced during childhood

Question 14

Which of the following equations best represents the net filtration pressure favoring fluid movement from blood plasma to interstitial fluid?

Accepted Answer

$$NFP = (P_c - P_i) - (\pi_c - \pi_i)$$

Question 15

Which of the following statements about lymphatic capillaries is TRUE?

Accepted Answer

They allow entry of large volumes of fluid when interstitial pressure increases

Question 16

A patient presents with appendicitis. Which lymphatic structure is most directly involved in defending against bacteria in the large intestine?

Accepted Answer

Appendix

Question 17

Which of the following is a specialized lymphatic vessel that collects fat in the small intestine?

Accepted Answer

Lacteal

Question 18

Which of the following best explains why lymphatic vessels are often found between muscles?

Accepted Answer

Muscle contraction helps propel lymph toward the heart

Question 19

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

Accepted Answer

Keratinocytes

Question 20

Which of the following is a plausible consequence of blocked lymphatic vessels in the lower limb?

Accepted Answer

Lymphedema and swelling of the affected limb

Chapter 20: The Lymphatic System and Immunity – Study Notes

Study Guide - Practice Questions