Apocrine secretion of gland means

Options

A. When the product is released but cell remains intact
B. When the entire contents of cell are discharged with the destruction of the cell
C. When a part of apical cytoplasm is lost
D. None of these

Answer

### Step-by-Step Solution:

1. **Understanding Apocrine Secretion**: Apocrine secretion is a type of glandular secretion where a portion of the cell's cytoplasm is lost during the secretion process. This is distinct from other types of secretion.

2. **Analyzing the Options**:
- **Option A**: "When the product is released but the cell remains intact." This is incorrect because apocrine secretion involves the loss of part of the cell.
- **Option B**: "When the entire cell and its contents are discharged with the destruction of the cell." This describes holocrine secretion, not apocrine.
- **Option C**: "When a part of apical cytoplasm is lost." This is the correct definition of apocrine secretion.
- **Option D**: "None of these." This is incorrect as option C is valid.

3. **Conclusion**: The correct answer is **Option C**, which states that apocrine secretion means when a part of the apical cytoplasm is lost during the secretion process.