Which bones are classified as short bones?

Short bones are characterized by their roughly cube-like shape, providing support and stability while allowing for some movement. The wrist and ankle bones, such as the carpals and tarsals, fit this definition perfectly as they are roughly equal in length and width. This structural design is important for their function in the body, which is to facilitate a range of movements and to absorb shock, particularly in areas that require flexibility and dexterity during activities such as walking and manipulating objects.

The other options consist of different classifications of bones: long bones, such as the humerus and femur, have a greater length than width and are primarily involved in movement; irregular bones like those in the vertebral column and skull serve complex functions and have varied shapes; flat bones, represented by ribs and scapulae, provide protection and surface area for muscle attachment. Each category of bones plays a distinct role in the overall framework and function of the skeletal system, but short bones specifically relate to the structure and purpose highlighted within the context of the question.