What is the primary role of osteoblasts in the skeletal system?

• A. Resorption of bone
• B. Formation of bone
• C. Production of cartilage
• D. Regulation of calcium levels

Answer: (B)

The primary role of osteoblasts in the skeletal system is the formation of bone. Osteoblasts are specialized cells that synthesize and secrete the components necessary for bone matrix, including collagen and other proteins, which provide structural integrity and strength to the bone. They also initiate the mineralization process, where calcium phosphate crystals are deposited, resulting in the hardening of the bone matrix. This function is crucial during the development of the skeleton and in the process of bone remodeling throughout life.

Osteoblasts work in tandem with osteoclasts, which are responsible for the resorption of bone, but their primary function is to build and create new bone tissue. This formation is essential for growth, repair, and maintaining the overall health of the skeletal system. Thus, the focus on the bone-forming capabilities of osteoblasts highlights their critical role in ensuring the strength and durability of bones.