Questions: Defense Fluid equilibrium Fat absorption

The answer is all three: 1. Defense, 2. Fluid equilibrium, and 3. Fat absorption.

Explanation:

1. Defense: The lymphatic system plays a crucial role in the body's immune defense. It transports lymph, a fluid containing infection-fighting white blood cells, throughout the body. Lymph nodes, which are part of the lymphatic system, filter harmful substances and contain immune cells that can respond to pathogens.

2. Fluid equilibrium: The lymphatic system helps maintain fluid balance in the body by collecting excess fluid and proteins from tissues and returning them to the bloodstream. This process prevents the accumulation of fluid in tissues, which can lead to swelling (edema).

3. Fat absorption: The lymphatic system is involved in the absorption of fats and fat-soluble vitamins from the digestive system. Specialized lymphatic vessels called lacteals, located in the lining of the small intestine, absorb dietary fats and transport them to the bloodstream.

In summary, the lymphatic system is responsible for defense, fluid equilibrium, and fat absorption, making all three options correct.