Which of the following gas is used in artificial respiration

Options

A. `O_(2)+ CO_(2)`
B. `O_(2)+ CO`
C. `O_(2) + H_(2)`
D. All of these

Explanation

To determine which gas is used in artificial respiration, let's analyze the options provided in the video transcript step by step.

### Step 1: Understanding Artificial Respiration
Artificial respiration is a technique used to assist or stimulate breathing in individuals who are unable to breathe adequately on their own. It often involves the administration of specific gases to ensure that the body receives enough oxygen.

**Hint:** Focus on the purpose of artificial respiration and the gases that can be used to support breathing.

### Step 2: Identifying Common Gases Used
The video mentions several gases that are associated with artificial respiration:
- **Oxygen (O2)**: This is the primary gas used in artificial respiration as it is essential for cellular respiration and energy production in the body.
- **Carbon Dioxide (CO2)**: Sometimes used in controlled amounts to stimulate breathing, but not as a primary gas.
- **Helium (He)**: Mentioned as being less soluble in blood, which can be beneficial in certain medical situations.

**Hint:** Consider the role of each gas in the respiratory process and their effects on the body.

### Step 3: Evaluating Other Gases
The transcript also mentions:
- **Carbon Monoxide (CO)**: This gas is poisonous and should not be used in artificial respiration.
- **Hydrogen (H2)**: This gas is not typically used in artificial respiration and does not serve a beneficial role in supporting breathing.

**Hint:** Eliminate gases that are harmful or do not support the respiratory function.

### Step 4: Conclusion
Based on the analysis, the primary gas used in artificial respiration is **Oxygen (O2)**. While other gases like CO2 and He may have specific applications, O2 is the essential gas required for effective artificial respiration.

**Final Answer:** The gas used in artificial respiration is **Oxygen (O2)**.