Two which type of barriers under innate immunity do fever and pH of body belong.

Options

A. Physical barriers
B. Physiological barriers
C. Cellular barriers
D. Cytokine barriers

Answer

**Step-by-Step Text Solution:**

1. **Understanding Innate Immunity**: Innate immunity refers to the natural defenses that an organism is born with. It includes various barriers that protect the body from pathogens without the need for prior exposure.

2. **Identifying Types of Barriers**: Innate immunity consists of four main types of barriers:
- **Physical Barriers**: These include structures like the skin and mucous membranes that physically block pathogens.
- **Physiological Barriers**: These involve internal conditions of the body that can inhibit pathogen growth, such as temperature and pH levels.
- **Cellular Barriers**: These are immune cells like macrophages and natural killer cells that actively destroy pathogens.
- **Cytokine Barriers**: These involve signaling molecules that help coordinate the immune response.

3. **Analyzing Fever and pH**:
- **Fever**: An increase in body temperature is a physiological response to infection. It creates an environment that is less favorable for pathogens.
- **pH**: The acidity of the stomach (low pH) helps to kill many microbes that enter the digestive system.

4. **Conclusion**: Both fever and pH are conditions that arise within the body and contribute to its defense against pathogens. Therefore, they fall under the category of **physiological barriers** in innate immunity.

5. **Final Answer**: Fever and pH of the body belong to the **physiological barriers** of innate immunity.

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