Which body parts are included in the upper extremities?

The upper extremities encompass the arm, forearm, and hand, which are crucial components for a range of movements and functions, including grasping and lifting. The arm consists of the upper segment extending from the shoulder to the elbow, while the forearm connects the elbow to the wrist. The hand, which includes the wrist, is vital for manipulation and interaction with the environment.

In contrast, the other options refer to parts of the lower extremities or regions that do not fall under the category of upper extremities. The leg and ankle, as well as the thigh and knee, pertain to the lower limbs. The shoulder is a part of the upper extremities, but the neck is not, as it is associated with the head and upper torso. Therefore, the correct choice accurately identifies all components that make up the upper extremities in the context of anatomy and movement.