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 known as **fibroblasts**. These cells are crucial for the formation and maintenance of connective tissues.

2. **Describe the Characteristics of Fibroblasts**:
- Fibroblasts are characterized as **flat and spindle-shaped** cells. Their shape allows them to spread out and interact with other cells and the extracellular matrix.

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