The first line of defense in the innate immune system includes:
Understand the Problem
The question is asking about the components that make up the first line of defense in the innate immune system. This requires knowledge about the human immune system, specifically the initial barriers against pathogens.
Answer
The final answer is All of these
The correct answer is All of these. The first line of defense in the innate immune system consists of physical and chemical barriers, including the epidermis of the skin, hair, and sebum.
Answer for screen readers
The correct answer is All of these. The first line of defense in the innate immune system consists of physical and chemical barriers, including the epidermis of the skin, hair, and sebum.
More Information
The innate immune system is the first line of defense against pathogens. It includes physical barriers like skin and mucous membranes, as well as chemical barriers like sebum and sweat. These barriers prevent pathogens from entering the body and causing infection.
Tips
A common mistake is to only focus on one aspect of the innate immune system's first line of defense (e.g., only physical barriers). Remember to consider both physical and chemical barriers for a complete understanding.
Sources
- Innate immune system - Autoimmunity - NCBI Bookshelf - ncbi.nlm.nih.gov
- What are the Three Lines of Defense? - News-Medical - news-medical.net
- Immune response: MedlinePlus Medical Encyclopedia - medlineplus.gov
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