Lymphatic system jobs flashcards

What is the primary function of the lymphatic system?

To maintain fluid balance, absorb fats from the digestive tract, and support immune functions.

True or false: The lymphatic system circulates blood.

False, because it circulates lymph, not blood.

What is lymph?

A clear fluid that contains white blood cells, proteins, and waste products, transported through lymphatic vessels.

Difference between lymph and blood?

Lymph is a clear fluid that helps in immune response, while blood is red and carries oxygen and nutrients.

What are lymph nodes?

Small, bean-shaped structures that filter lymph and house immune cells to fight infections.

Fill in the blank: Lymphatic vessels are similar to ______.

Veins, as they both transport fluids but lymphatic vessels carry lymph.

What role do macrophages play?

They engulf and digest pathogens and debris, acting as a crucial part of the immune response.

True or false: The spleen is part of the lymphatic system.

True, because it filters blood and helps produce immune cells.

What is the role of the thymus?

It matures T-cells, which are essential for adaptive immunity.

What is the function of the tonsils?

They act as the first line of defense against ingested or inhaled pathogens.

Comparison: Active immunity vs. passive immunity?

Active immunity comes from exposure to pathogens, while passive immunity is gained from antibodies from another source.

How does lymph circulate?

Lymph moves through vessels via muscle contractions and one-way valves, preventing backflow.