Circulatory fluids are the fluids in the body that are responsible for transporting essential substances throughout the body. In the human body, the two most vital circulatory fluids are blood and lymph. These fluids play crucial roles in maintaining overall health and bodily functions.
Blood: The Lifeline
Blood is a complex fluid composed of several components:
- Plasma: The liquid component of blood, carrying nutrients, hormones, and waste products.
- Red Blood Cells: Responsible for oxygen transport.
- White Blood Cells: Part of the immune system, fighting off infections.
- Platelets: Essential for blood clotting.
Blood circulates throughout the body via blood vessels and is pumped by the heart. It delivers oxygen and nutrients to cells and removes waste products.
Lymph: The Cleansing Fluid
Lymph is a clear fluid that circulates through the lymphatic system.
- It contains white blood cells, particularly lymphocytes, which are important for immune function.
- Lymph helps to remove waste and toxins from tissues.
- It also transports fats and other substances from the digestive system to the bloodstream.
Lymph is collected from tissues and transported through lymphatic vessels to lymph nodes, where it is filtered before returning to the bloodstream.
| Circulatory Fluid | Primary Function | Key Components |
|---|---|---|
| Blood | Oxygen and nutrient transport, immunity | Plasma, red blood cells, white blood cells, platelets |
| Lymph | Waste removal, immunity | Lymphocytes, clear fluid |
