Here's why:
* Structure: Connective tissue cells are diverse and vary depending on the type of connective tissue (e.g., fibroblasts, chondrocytes, osteocytes). Liver cells (hepatocytes) are large, polygonal cells with a distinct structure.
* Function: Connective tissue cells provide support, bind tissues together, and help with repair and defense. Liver cells are responsible for a wide range of functions including detoxification, protein synthesis, bile production, and glucose metabolism.
* Origin: Connective tissue cells originate from mesenchyme, a type of embryonic tissue. Liver cells develop from endoderm, a different germ layer.
In summary: Connective tissue cells and liver cells are fundamentally different in their structure, function, and origin, making them two distinct types of cells.