How your body fights back against invisible threats
In short: Discover the complex biological defense network that keeps you healthy. This video explores how physical barriers and specialized cells work together to protect your body from harm.
The immune system acts as a multi-layered defense mechanism. It begins with physical barriers, such as your skin and mucous membranes, which serve as the first line of protection.
When these barriers are breached, the body deploys specialized cells like phagocytes—specifically neutrophils and macrophages—to combat threats. The system also utilizes natural killer cells and the inflammatory response to maintain health and recover from injury.
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Sources
- Summary by Intellect · source: Immune System, Part 1: Crash Course Anatomy & Physiology #45
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