When using Protocol 22, which of the following body parts is considered peripheral?

The correct answer is the hand because it is considered a peripheral body part. In the context of anatomy, peripheral body parts refer to those that are located away from the central part of the body, such as limbs and extremities. The hand is at the end of the arm, making it an example of a peripheral structure.

In contrast, the abdomen is a central body area that houses vital organs, and the head contains the brain and sensory organs, which are also centrally located. The upper leg, while further away from the center than the abdomen or head, is still considered to be more proximal compared to the hand, which is at the extremity of the limb. Therefore, the hand is the clear choice for the peripheral body part in this scenario.