How many values are correctly given from following?
i. Normal heartbeet rate = 72 beats/min.
ii. Period of cardiac cycle = 0.8 sec.
iii. Stroke volume = 70 ml
iv. Normal cardiac output = 5000 ml
v. Normal blood pressure = 120/80 mm Hg

Options

A. Three
B. Four
C. Five
D. None

Answer

To determine how many values are correctly given in the question, we will analyze each statement one by one.

1. **Normal Heartbeat Rate = 72 beats/min**:
- The average normal resting heart rate for adults is indeed around 60 to 100 beats per minute, with 72 beats/min being a common average.
- **Conclusion**: This statement is **correct**.

2. **Period of Cardiac Cycle = 0.8 sec**:
- The cardiac cycle duration varies with heart rate, but a typical value is about 0.8 seconds for a heart rate of 75 beats/min.
- **Conclusion**: This statement is **correct**.

3. **Stroke Volume = 70 ml**:
- The stroke volume, which is the amount of blood pumped by the left ventricle in one contraction, is typically around 70 ml in a healthy adult at rest.
- **Conclusion**: This statement is **correct**.

4. **Normal Cardiac Output = 5000 ml**:
- Cardiac output is calculated as stroke volume multiplied by heart rate. For a stroke volume of 70 ml and a heart rate of 72 beats/min, the cardiac output would be 70 ml/beat * 72 beats/min = 5040 ml/min, which is approximately 5000 ml/min.
- **Conclusion**: This statement is **correct**.

5. **Normal Blood Pressure = 120/80 mm Hg**:
- The normal blood pressure for a healthy adult is typically around 120/80 mm Hg, which is considered the standard reference.
- **Conclusion**: This statement is **correct**.

Now, let's summarize the findings:
- All five statements are correct.

**Final Answer**: All 5 values are correctly given.

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