In autoimmune illnesses, which body system attacks normal tissue?

In autoimmune illnesses, which body system attacks normal tissue?

• A. Lymphatic
• B. Immune
• C. Circulatory
• D. Endocrine

Answer: (B)

The immune system is the body’s defense network that normally protects you by recognizing and attacking foreign invaders. In autoimmune illnesses, it loses tolerance to the body’s own tissues and starts attacking them, producing inflammation and tissue damage. That’s why the immune system is the correct choice. The other systems aren’t the source of the self-attack in autoimmunity—the lymphatic system is part of the immune network, the circulatory system mainly transports cells and fluids, and the endocrine system governs hormones, but none of them are the component that deliberately targets normal tissue in autoimmune diseases.

The immune system is the body’s defense network that normally protects you by recognizing and attacking foreign invaders. In autoimmune illnesses, it loses tolerance to the body’s own tissues and starts attacking them, producing inflammation and tissue damage. That’s why the immune system is the correct choice. The other systems aren’t the source of the self-attack in autoimmunity—the lymphatic system is part of the immune network, the circulatory system mainly transports cells and fluids, and the endocrine system governs hormones, but none of them are the component that deliberately targets normal tissue in autoimmune diseases.