In the connective tissue micrograph, what does the arrow indicate?

In the connective tissue micrograph, what does the arrow indicate?

• A. Fibroblast nucleus
• B. Fibroblast cytoplasm
• C. Nucleus of an adipocyte
• D. Mitochondria

Answer: (A)

In connective tissue, fibroblasts are the resident cells that maintain and synthesize the extracellular matrix. The arrow highlights the fibroblast nucleus, which is typically elongated or oval and stains darkly, with only a small amount of cytoplasm visible around it. This makes the nucleus the most conspicuous feature in many connective-tissue drawings or micrographs. An adipocyte nucleus would be pressed to the cell edge by a large lipid droplet and isn’t seen here, and mitochondria are too small to resolve as distinct structures in standard light microscopy. So the arrow is pointing to the fibroblast nucleus.

In connective tissue, fibroblasts are the resident cells that maintain and synthesize the extracellular matrix. The arrow highlights the fibroblast nucleus, which is typically elongated or oval and stains darkly, with only a small amount of cytoplasm visible around it. This makes the nucleus the most conspicuous feature in many connective-tissue drawings or micrographs. An adipocyte nucleus would be pressed to the cell edge by a large lipid droplet and isn’t seen here, and mitochondria are too small to resolve as distinct structures in standard light microscopy. So the arrow is pointing to the fibroblast nucleus.