Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

20. The Lymphatic System

Overview of Lymphoid Organs

Anatomy & Physiology

20. The Lymphatic System

Overview of Lymphoid Organs

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Problem 3

Textbook Question

The lymphoid organ that filters the blood is the , and the lymphoid organ that filters the lymph is the.

Verified step by step guidance

Step 1: Understand the role of lymphoid organs in the body. Lymphoid organs are part of the immune system and are responsible for filtering and monitoring fluids in the body, such as blood and lymph, to detect and respond to pathogens.

Step 2: Recall the primary lymphoid organ responsible for filtering blood. This organ removes old or damaged red blood cells and pathogens from the bloodstream, while also serving as a site for immune responses.

Step 3: Identify the lymphoid organ responsible for filtering lymph. This organ is distributed throughout the body and acts as a checkpoint for lymphatic fluid, trapping pathogens and debris while housing immune cells to initiate a response.

Step 4: Match the descriptions to the correct organs. The organ that filters blood is the spleen, and the organ that filters lymph is the lymph node.

Step 5: Review the anatomical locations and functions of the spleen and lymph nodes to reinforce understanding. The spleen is located in the upper left abdomen, while lymph nodes are found throughout the body, especially in areas like the neck, armpits, and groin.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Spleen

The spleen is a vital lymphoid organ responsible for filtering blood. It removes old or damaged red blood cells and pathogens, playing a crucial role in the immune response. The spleen also stores white blood cells and platelets, contributing to the body's ability to fight infections and maintain blood health.

Lymph Nodes

Lymph nodes are small, bean-shaped structures that filter lymph fluid as it circulates through the lymphatic system. They contain immune cells that can detect and respond to pathogens, making them essential for the body's defense mechanisms. Lymph nodes swell during infections, indicating their active role in filtering and fighting off disease.

Lymphatic System

The lymphatic system is a network of vessels and organs that transport lymph, a fluid containing infection-fighting white blood cells. It plays a critical role in maintaining fluid balance in the body and is integral to the immune system. The system includes lymph nodes, the spleen, and other lymphoid tissues, facilitating the filtration of lymph and the immune response.