Which cell divides to form isogenous groups within cartilage?

Which cell divides to form isogenous groups within cartilage?

• A. Chondrocyte
• B. Chondroblast
• C. Fibroblast
• D. Osteoblast

Answer: (A)

Isogenous groups form when a single chondrocyte divides within the cartilage matrix, and its daughter cells stay close together in the same area. The cell that splits to create this cluster is the chondrocyte, the mature cartilage cell housed in a lacuna. Chondroblasts are the proliferative precursors that lay down new matrix and mature into chondrocytes, driving growth at the surface, but the internal division that produces isogenous groups comes from a chondrocyte. Fibroblasts and osteoblasts are involved in other tissues and processes (fibrous connective tissue and bone, respectively) and don’t form isogenous groups within cartilage.

Isogenous groups form when a single chondrocyte divides within the cartilage matrix, and its daughter cells stay close together in the same area. The cell that splits to create this cluster is the chondrocyte, the mature cartilage cell housed in a lacuna. Chondroblasts are the proliferative precursors that lay down new matrix and mature into chondrocytes, driving growth at the surface, but the internal division that produces isogenous groups comes from a chondrocyte. Fibroblasts and osteoblasts are involved in other tissues and processes (fibrous connective tissue and bone, respectively) and don’t form isogenous groups within cartilage.