Select the correct statement from the ones given below

Options

A. Cocaine is given to patients after surgery as it stimulates recovery
B. Barbiturates when given to criminals make them tell the truth
C. Morphine is often given a persons who have undergone surgery as a pain killer
D. Chewing tobacco lowers blood pressure and heart rate

Answer

To solve the question of selecting the correct statement from the given options, we will analyze each statement one by one:

### Step-by-Step Solution:

1. **Evaluate Statement A**:
- **Statement**: "Cocaine is given to patients after surgery as it stimulates recovery."
- **Analysis**: Cocaine is a natural stimulant that affects the central nervous system (CNS) by enhancing brain activity. However, it is not used to stimulate recovery after surgery. Therefore, this statement is **incorrect**.

2. **Evaluate Statement B**:
- **Statement**: "Barbiturates when given to criminals make them tell the truth."
- **Analysis**: Barbiturates are sedative-hypnotics that depress CNS activity and induce sleep. They do not compel a person to tell the truth; rather, they can impair cognitive function. Thus, this statement is **incorrect**.

3. **Evaluate Statement C**:
- **Statement**: "Morphine is often given to a person who has undergone surgery as a painkiller."
- **Analysis**: Morphine is indeed a strong sedative and analgesic (painkiller) that acts on the CNS to reduce pain. It is commonly administered to patients post-surgery for pain management. Therefore, this statement is **correct**.

4. **Evaluate Statement D**:
- **Statement**: "Chewing tobacco lowers blood pressure and heart rate."
- **Analysis**: Chewing tobacco actually increases the release of adrenaline, which constricts blood vessels and increases blood pressure and heart rate. Hence, this statement is **incorrect**.

### Conclusion:
After evaluating all the statements, the correct statement is:
**C: Morphine is often given to a person who has undergone surgery as a painkiller.**

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