The term "upper limb" refers to the human arm, which includes the shoulder, upper arm, forearm, wrist, and hand. It is designed for a wide range of movements and functions, such as reaching, lifting, and manipulating objects. The upper limb consists of bones, muscles, tendons, and ligaments that work together to provide strength and flexibility. The main bones in the upper limb are the humerus in the upper arm, the radius and ulna in the forearm, and the bones of the wrist and hand. Muscles in the upper limb allow for various actions, including lifting, pushing, and gripping, making it essential for daily activities.