Answer :
The cells that line the sinuses of a lymph node to provide protection against pathogens are macrophages. Macrophages are a type of white blood cell that plays a crucial role in the immune response by engulfing and digesting pathogens, dead cells, and other debris. They act as scavengers, clearing out any harmful substances that enter the lymph nodes.
1. Macrophages are part of the body's first line of defense against infections.
2. These cells help in detecting, engulfing, and destroying harmful microorganisms like bacteria, viruses, and fungi.
3. Macrophages also play a role in presenting antigens to other immune cells, helping to trigger a specific immune response against the invading pathogens.
In summary, macrophages are the key cells that line the sinuses of a lymph node and provide a protective barrier against pathogens by engulfing and eliminating them to help maintain the body's overall immune defense.
