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HomeHomework HelpbiologyLymphatic System Overview

Lymphatic System Overview

The lymphatic system is a network of vessels and organs that facilitates the transport of lymph, a fluid containing immune cells, throughout the body, playing a crucial role in maintaining fluid balance and supporting the immune response by filtering pathogens and facilitating the activation of lymphocytes.

beginner
2 hours
Biology
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Overview

The lymphatic system is an essential part of the body's defense mechanism and fluid balance. It consists of a network of vessels, nodes, and organs that work together to transport lymph, a fluid rich in immune cells. This system helps filter out pathogens and supports the immune response, making it ...

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Key Terms

Lymph
A clear fluid that circulates through the lymphatic system, containing white blood cells.

Example: Lymph helps transport immune cells throughout the body.

Lymph Nodes
Small, bean-shaped structures that filter lymph and house immune cells.

Example: Swollen lymph nodes can indicate an infection.

Lymphatic Vessels
Thin-walled vessels that carry lymph away from tissues and towards lymph nodes.

Example: Lymphatic vessels are similar to veins but carry lymph instead of blood.

Immune Cells
Cells that are part of the immune system, including lymphocytes and macrophages.

Example: T-cells are a type of immune cell that helps fight infections.

Lymphedema
Swelling that occurs when lymph fluid does not properly drain.

Example: Lymphedema can occur after lymph node removal during cancer treatment.

Pathogen
An organism that causes disease, such as bacteria or viruses.

Example: The immune system targets pathogens to prevent illness.

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Key Concepts

Fluid balanceImmune responseLymph nodesLymphatic vessels