Assertion: Pneumotaxic center controls the rate of respiration .
Reason: Primarly, it controls the switch off point of inspiration.

Options

A. If both Assertion & Reason are true and the
reason is the correct explanation of the
assertion, then mark (1)
B. If both Assertion & Reason are trye but the
reason is not the correct explanation of the
assertion , then mark (2)
C. If Assertion is true statement but Reason is
fakse, then mark (3)
D. If both Assertion and Reason are false
statements, then mark (4)

Answer

To analyze the given assertion and reason, we can break down the solution into the following steps:

### Step 1: Understanding the Assertion
The assertion states that the pneumotaxic center controls the rate of respiration.

**Explanation**: The pneumotaxic center is located in the pons region of the brain and plays a crucial role in regulating the rhythm of breathing. It sends signals to the respiratory muscles to help maintain a consistent breathing rate.

### Step 2: Understanding the Reason
The reason provided states that the pneumotaxic center primarily controls the switch-off point of inspiration.

**Explanation**: The pneumotaxic center helps to regulate the duration of inhalation (inspiration) by sending inhibitory signals to the inspiratory neurons in the medulla. This function is essential for preventing over-inflation of the lungs, thereby controlling the switch-off point of inspiration.

### Step 3: Evaluating the Truth of Both Statements
Both the assertion and the reason are true. The pneumotaxic center does indeed control the rate of respiration, and it primarily functions by controlling when to stop the inhalation process.

### Step 4: Establishing the Relationship
The reason provided is a correct explanation of the assertion. The ability of the pneumotaxic center to control the switch-off point of inspiration directly influences the overall rate of respiration.

### Conclusion
Both the assertion and the reason are true, and the reason accurately explains the assertion.

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