Cancellous bone refers to spongy, porous bone that lies under cortical bone.

Cancelous bone is a type of bone tissue found in the human skeleton, not in the psychology context. Therefore, I will provide an explanation of cancellous bone in the anatomical and physiological context.

Cancellous bone, also known as trabecular or spongy bone, is a porous and lightweight type of bone tissue found at the ends of long bones, in the pelvis, and in the vertebrae. It is composed of small, irregularly-shaped structures called trabeculae, which form a lattice-like structure with open spaces between them.

Cancellous bone plays an important role in providing structural support to the body and in facilitating the production and maintenance of red and white blood cells. The open spaces within cancellous bone contain bone marrow, which is responsible for producing these blood cells.

Examples of factors that can affect the structure and function of cancellous bone include age, hormonal changes, and certain medical conditions such as osteoporosis, a condition that causes bones to become brittle and prone to fractures. In addition, lifestyle factors such as diet and exercise can influence the development and maintenance of healthy cancellous bone.

Medical professionals may use imaging techniques such as X-rays, CT scans, and MRIs to evaluate the density and structure of cancellous bone and to diagnose conditions that affect bone health. Treatment options for cancellous bone-related conditions may include lifestyle changes, medications, and surgical interventions.