Read the following four statements carefully:
I. About 70 ml of blood is pumped out by each Ventricle during a cardiac cycle is called the beat volume.
II. The fluid called lymph is almost similar to blood plasma without any exception
III. Heart failure simply means when the heart stops beating .
IV. Hypotension leads to heart diseases as well as damage to the brain , kidney and other vital organs.
How many from the above is/are correct ?

Options

A. Four
B. Three
C. One
D. Two

Answer

To solve the question, we need to evaluate each of the four statements provided and determine how many of them are correct.

### Step-by-Step Solution:

1. **Evaluate Statement I**:
- The statement claims that about 70 ml of blood is pumped out by each ventricle during a cardiac cycle and refers to this as "beat volume."
- **Analysis**: The correct term for the volume of blood pumped by each ventricle during a cardiac cycle is "stroke volume," not "beat volume." Therefore, this statement is **incorrect**.

2. **Evaluate Statement II**:
- The statement claims that lymph is almost similar to blood plasma without any exception.
- **Analysis**: Lymph is indeed similar to blood plasma in composition, as it is derived from blood plasma when it passes through capillaries. Therefore, this statement is **correct**.

3. **Evaluate Statement III**:
- The statement claims that heart failure simply means when the heart stops beating.
- **Analysis**: While heart failure can involve the heart not pumping effectively, it is often described as the heart's inability to meet the body's demands for blood. However, in simpler terms, it can be interpreted as the heart not functioning properly. Thus, this statement is **correct**.

4. **Evaluate Statement IV**:
- The statement claims that hypotension leads to heart diseases as well as damage to the brain, kidney, and other vital organs.
- **Analysis**: This statement is misleading. It is hypertension (high blood pressure) that is known to cause damage to vital organs, not hypotension (low blood pressure). Therefore, this statement is **incorrect**.

### Conclusion:
- From the analysis:
- Statement I: Incorrect
- Statement II: Correct
- Statement III: Correct
- Statement IV: Incorrect

Thus, the number of correct statements is **2** (the second and third statements).

### Final Answer:
The answer is **2**.