Which type of bone is the ulna classified as?

The ulna is classified as a long bone primarily due to its elongated shape, which is characteristic of long bones. Long bones are typically longer than they are wide and are essential for the movement and support of the body. They consist of a shaft, known as the diaphysis, and two ends, known as the epiphyses. In terms of function, long bones facilitate movement by acting as levers, supporting the weight of the body and providing a structure for muscles to attach to.

The ulna plays a crucial role in the anatomy of the arm, forming part of the elbow joint and providing articulation with the radius and humerus. Its long and slender structure allows for a greater range of movement at the elbow, as well as contributing to the forearm's overall stability. This classification helps in the understanding of bone structure and function within the context of both anatomy and beauty therapy, particularly when considering the effects of massage and other treatments around the upper limb.