Which term relates to the upper limb between the shoulder and the elbow?

The term that relates to the upper limb between the shoulder and the elbow is "brachial." This anatomical term specifically denotes the region of the arm that lies between these two joints, the shoulder (where the arm connects to the trunk) and the elbow (which bends the arm). The term "brachial" is derived from the Latin word "brachium," meaning arm, and it is commonly used in anatomical and medical contexts to refer to structures relating to this segment of the upper limb.

The antecubital region refers to the area in front of the elbow, also known as the cubital fossa, and is not synonymous with the entire arm between the shoulder and the elbow. Cephalic pertains to the head or the cranial part and is unrelated to the forelimb specifically. Axillary relates to the armpit area, which is proximal to the shoulder rather than describing the arm's section between shoulder and elbow. Thus, "brachial" is the most appropriate term for the specified region of the upper limb.