Which cell is not present in connective tissue proper ?

Options

A. Erthrocytes
B. Lymphocytes
C. Plasma cell
D. Fibroblast

Answer

**Step-by-Step Solution:**

1. **Understanding Connective Tissue Proper**: Connective tissue proper is a category of connective tissue that includes various types of cells and fibers that provide support and structure to the body.

2. **Identifying Cell Types**: In connective tissue proper, we typically find several types of cells, including fibroblasts, lymphocytes, and others. Each of these cells has a specific function.

3. **Analyzing Erythrocytes**: Erythrocytes, commonly known as red blood cells, are responsible for transporting oxygen throughout the body. They contain hemoglobin and are characterized by the absence of a nucleus.

4. **Determining Presence in Connective Tissue**: Since erythrocytes lack a nucleus and are primarily involved in blood circulation rather than providing structural support, they are not classified as part of connective tissue proper.

5. **Conclusion**: Based on the analysis, the cell that is not present in connective tissue proper is erythrocytes.

**Final Answer**: Erythrocytes (red blood cells) are not present in connective tissue proper.

---