Which part does the arm point to?

Arm: upper limb; The body part that connects the trunk with the hand. It is what we usually call the big arm and the small arm. The big arm is called the big arm and the small arm is called the small arm. Weapons refer to big weapons and small arms. Man has two arms.

Elbow: the joint on the upper limb connecting the upper arm and the lower arm. Every arm has an elbow.

Wrist: the joint between the upper limb and the hand. Each arm has a wrist.