$$\text{Lymph Formation} = \text{Capillary Filtration} - \text{Capillary Reabsorption}$$

Question 1

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

Accepted Answer

To return interstitial fluid to the bloodstream and provide immune defense

Question 2

Which of the following structures is NOT part of the lymphatic system?

Accepted Answer

Thyroid gland

Question 3

A patient has swelling in their right arm and right side of the chest. Which lymphatic duct is most likely blocked?

Accepted Answer

Right lymphatic duct

Question 4

How is lymph transported through lymphatic vessels?

Accepted Answer

By smooth muscle contraction, skeletal muscle movement, and one-way valves

Question 5

Which of the following best defines lymphedema?

Accepted Answer

An accumulation of lymph due to blocked lymphatic vessels

Question 6

Which of the following is a correct description of lymphocytes?

Accepted Answer

Cells that produce antibodies and mediate immune responses

Question 7

A biopsy reveals a cluster of lymphocytes surrounded by a capsule in the axillary region. What structure is most likely being examined?

Accepted Answer

Lymph node

Question 8

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

Accepted Answer

Producing insulin

Question 9

Which of the following best describes the function of the spleen?

Accepted Answer

It filters blood, recycles old red blood cells, and helps mount immune responses

Question 10

A patient undergoes a splenectomy. Which of the following is a likely consequence?

Accepted Answer

Increased risk of infection due to reduced immune surveillance

Question 11

Which of the following best describes MALT (Mucosa-Associated Lymphoid Tissue)?

Accepted Answer

Lymphoid tissue found in mucous membranes that protects against pathogens entering through mucosa

Question 12

When is the thymus most active in the human lifespan?

Accepted Answer

During childhood and adolescence

Question 13

Which of the following best explains why lymph flows in only one direction through lymphatic vessels?

Accepted Answer

The presence of one-way valves that prevent backflow

Question 14

A patient has a blockage in the thoracic duct. Which part of the body is most likely to experience lymphedema?

Accepted Answer

Left leg

Question 15

Which of the following equations best represents the relationship between capillary filtration, reabsorption, and lymph formation?

Accepted Answer

$$	ext{Lymph Formation} = 	ext{Capillary Filtration} - 	ext{Capillary Reabsorption}$$

Question 16

Which of the following scenarios best illustrates the function of MALT?

Accepted Answer

A person ingests contaminated food, and lymphoid tissue in the gut mounts an immune response

Question 17

Which of the following is a correct pairing of lymphatic structure and its function?

Accepted Answer

Thymus – maturation of T lymphocytes

Question 18

A patient presents with repeated infections after removal of their thymus. Which immune cell type is most likely deficient?

Accepted Answer

T lymphocytes

Question 19

Which of the following best explains why the right lymphatic duct drains a smaller portion of the body compared to the thoracic duct?

Accepted Answer

The right lymphatic duct only drains the right upper limb, right side of the head and thorax

Question 20

A patient with a parasitic infection develops massive swelling in the lower limbs. Which process is most likely impaired?

Accepted Answer

Lymph drainage due to blocked lymphatic vessels

Lymphatic System: Structure, Function, and Clinical Relevance

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