What type of bone is characterized as longer than it is wide, such as the femur?

Long bones are defined by their elongated structure, typically being longer than they are wide. This category includes bones like the femur, which is the largest bone in the body and plays a key role in the skeletal structure of the leg. Long bones are not only essential for support and movement but also serve vital functions in the growth and production of blood cells, as they contain bone marrow. Their unique shape allows for the leverage necessary for locomotion and support during various physical activities.

In contrast, short bones are roughly equal in length and width and include bones like the carpals in the wrist. Flat bones, such as the sternum and skull bones, have a flattened shape and typically serve protective functions. Irregular bones, which include the vertebrae, have complex shapes that do not fit into the other categories and serve specialized roles. Understanding these classifications helps in comprehending bone physiology and the overall functionality of the skeletal system.