Lymphatic System

• lymph nodes - filters
• the lymphatic system collects lost fluid and returns it back to the circulatory system
• atherosclerosis - arteries are narrowed and hardened
• Lymphatic System - subsystem of circulatory and immune
• immune system happens in lymph nodes
• selection - identifying self from non-self
• antihistamines - cadaract allergies
• histamines - causes allergy symptoms
• allergies - immune system hypersensitive to antigens/allergens
• autoimmune disease - can't identify self from non-self, and attacks itself