In which type of bone is remodeling more active?

• A. Cortical bone
• B. Trabecular bone
• C. Compact bone
• D. Osteogenic bone

Answer: (B)

Trabecular bone, also known as cancellous or spongy bone, is where remodeling is more active compared to other types of bone. This increased activity is due to its structural characteristics and metabolic role within the body.

Trabecular bone is found at the ends of long bones and within the interior of others, providing a larger surface area for the exchange of minerals, which is crucial for maintaining bone health. The trabecular architecture allows for flexibility and resilience in response to mechanical loads, and due to its high surface area, it is more responsive to the metabolic demands of the body.

In addition, trabecular bone has a higher turnover rate than cortical bone. This means that it undergoes more frequent cycles of resorption and formation, which is vital for mineral homeostasis and the adaptation of bone density to mechanical stresses. This remodeling process is crucial for overall skeletal health, making trabecular bone particularly important when considering conditions like osteoporosis, where increased remodeling can lead to decreased bone density.

In contrast, cortical bone, compact bone, and osteogenic bone have different remodeling rates and structural characteristics; cortical bone is denser and remodels more slowly, while compact bone is primarily involved in providing strength and support. Osteogenic bone, while