Smallest human cells are

Options

A. Leucocytes
B. Erythrocytes
C. Liver cells
D. Sperms.

Answer

To determine which is the smallest human cell among the given options (leukocytes, erythrocytes, liver cells, or sperm), we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Options**:
- We have four types of cells to consider: leukocytes (white blood cells), erythrocytes (red blood cells), liver cells (hepatocytes), and sperm cells.

2. **Research Cell Sizes**:
- **Leukocytes**: These cells vary in size but generally range from about 10 to 20 micrometers.
- **Erythrocytes**: Red blood cells are typically around 6 to 8 micrometers in diameter.
- **Liver Cells (Hepatocytes)**: These cells are larger, usually around 20 to 30 micrometers.
- **Sperm Cells**: The head of a sperm cell is approximately 4 micrometers in length, making it one of the smallest cells in the human body.

3. **Compare the Sizes**:
- From the sizes researched, we can see that sperm cells are smaller than leukocytes, erythrocytes, and liver cells.

4. **Conclusion**:
- Based on the size comparison, the smallest human cell among the options provided is the sperm cell.

### Final Answer:
The smallest human cells are **sperm cells**.

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