What are the main cells of connective tissue proper? What is the name given to the intercellular material that surrounds these cells?

Explanation

### Step-by-Step Solution:

1. **Identify the Main Cells of Connective Tissue Proper**:
- The primary cells found in connective tissue proper are called **fibroblasts**. These cells are crucial for the formation and maintenance of the connective tissue.

2. **Function of Fibroblasts**:
- Fibroblasts are responsible for the secretion of the **extracellular matrix**. This matrix provides structural support and plays a role in cell signaling.

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