Pathophysiology is the

Options

A. study of physiology of pathogen
B. study of normal physiology of host
C. study of altered physiology of host
D. none of the above

Answer

To solve the question regarding the definition of pathophysiology, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Pathophysiology**:
- Pathophysiology is a branch of medicine that deals with the changes in normal physiological processes due to disease or injury. It focuses on how these changes affect the body and its functions.

2. **Analyzing the Options**:
- **Option A**: Study of physiology of pathogen - This option refers to understanding how pathogens function, which is not the focus of pathophysiology.
- **Option B**: Study of normal physiology of host - This option describes the study of healthy physiological processes, which is also not the focus of pathophysiology.
- **Option C**: Study of altered physiology of host - This option correctly describes pathophysiology, as it involves studying how physiological processes are altered due to the presence of pathogens or injuries.
- **Option D**: None of the above - This option is incorrect since we have identified a correct option.

3. **Identifying the Correct Answer**:
- Based on the analysis, the correct answer is **Option C**: Study of altered physiology of host.

### Final Answer:
Pathophysiology is the study of altered physiology of host (Option C).

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