Which of the following terms doesn't mean one and the same ?

Options

A. Polygobulia - Polycythemia
B. Scavenger leucocyte - Monocyte
C. Bicuspid valve - Mitral valve
D. Myocardial infarction - Myocardial ischaemia

Answer

To solve the question "Which of the following terms doesn't mean one and the same?", we will analyze each option provided to determine if they are synonymous or not.

### Step-by-Step Solution:

1. **Identify the Options**: We need to analyze the terms provided in the options. The terms are:
- Polyglobulia
- Polycythemia
- Squanger leukocyte
- Monocyte
- Bicuspid valve
- Mitral valve
- Myocardial infarction
- Myocardial ischemia

2. **Analyze the First Option**:
- **Polyglobulia** is matched with **Polycythemia**.
- **Meaning**: Both terms refer to an increased volume of red blood cells in the blood.
- **Conclusion**: They mean the same thing.

3. **Analyze the Second Option**:
- **Squanger leukocyte** is matched with **Monocyte**.
- **Meaning**: Monocytes are a type of white blood cell capable of ingesting bacteria and particulate matter. The term "squanger leukocyte" refers to the same type of cell.
- **Conclusion**: They mean the same thing.

4. **Analyze the Third Option**:
- **Bicuspid valve** is matched with **Mitral valve**.
- **Meaning**: The bicuspid valve is another name for the mitral valve, which is located between the left atrium and left ventricle of the heart.
- **Conclusion**: They mean the same thing.

5. **Analyze the Fourth Option**:
- **Myocardial infarction** is matched with **Myocardial ischemia**.
- **Meaning**: Myocardial infarction refers to a heart attack, which occurs when blood flow to a part of the heart is blocked. Myocardial ischemia refers to reduced blood flow to the heart muscle, which can lead to a heart attack but is not the same condition.
- **Conclusion**: They do not mean the same thing.

### Final Answer:
The term that does not mean one and the same is **Myocardial infarction** (matched with **Myocardial ischemia**).