Veterinary Technician Practice Exam

What is the main function of osteoblasts in bone development?

1. Resorption of bone

2. Formation of new bone

3. Maintenance of bone structure

4. Regeneration of cartilage

The correct answer is: Formation of new bone

Osteoblasts play a crucial role in bone development primarily through the formation of new bone. These specialized cells are responsible for synthesizing and secreting the bone matrix, which consists of collagen and other proteins that provide structural support. As osteoblasts become encased in the matrix they create, they eventually differentiate into osteocytes, which contribute to the maintenance and monitoring of bone tissue. The formation of new bone involves a complex process called ossification, where osteoblasts actively lay down new bone material in response to various physiological needs, such as growth, repair, and modeling in response to stress or strain. This function is vital for maintaining the strength and health of the skeletal system, making osteoblasts essential for new bone growth as well as the ongoing process of bone remodeling.