Where is trabecular bone commonly found?

Where is trabecular bone commonly found?

• A. In areas of high mechanical stress
• B. In the shaft of long bones
• C. In the end of long bones
• D. In the skull

Answer: (C)

Trabecular bone, also known as cancellous or spongy bone, is primarily located at the ends of long bones, particularly at the epiphyses, as well as in the interiors of vertebrae and in certain bones like the pelvis and ribs. This type of bone has a porous structure that makes it lighter and is designed to absorb and distribute forces effectively. The reason this choice is correct is that trabecular bone's specific structure allows it to cope well with the mechanical loads and stresses that occur at joint surfaces and other areas where bones bear weight. The bone's trabecular network aids in reducing the weight of the skeleton while still providing essential strength and support, particularly in areas where dynamic loading occurs — such as the ends of long bones, which are involved in joint movements. In contrast, areas of high mechanical stress typically contain more compact bone, and the shafts of long bones primarily consist of cortical bone, which provides strength and rigidity. Trabecular bone is not the primary type of bone found in the shaft of long bones, where the mechanical demands require denser structural support. Although trabecular bone can be found in the skull, it is less predominant compared to the cortical bone that comprises the outer layer of the skull

Trabecular bone, also known as cancellous or spongy bone, is primarily located at the ends of long bones, particularly at the epiphyses, as well as in the interiors of vertebrae and in certain bones like the pelvis and ribs. This type of bone has a porous structure that makes it lighter and is designed to absorb and distribute forces effectively.

The reason this choice is correct is that trabecular bone's specific structure allows it to cope well with the mechanical loads and stresses that occur at joint surfaces and other areas where bones bear weight. The bone's trabecular network aids in reducing the weight of the skeleton while still providing essential strength and support, particularly in areas where dynamic loading occurs — such as the ends of long bones, which are involved in joint movements.

In contrast, areas of high mechanical stress typically contain more compact bone, and the shafts of long bones primarily consist of cortical bone, which provides strength and rigidity. Trabecular bone is not the primary type of bone found in the shaft of long bones, where the mechanical demands require denser structural support. Although trabecular bone can be found in the skull, it is less predominant compared to the cortical bone that comprises the outer layer of the skull