The body region typically referred to the elbow is anatomically called what

Cubital region

Explanation:

The area elbow pit or fossa is a triangular region located on the anterior view of the human beings or other animals.

It lies anterior to the elbow when kept in the standard position. This region is commonly known as elbow.

This cubital region is used for the extraction of blood from the human body. It is the used as the intravenous route for the administration of any medication inside the body.

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.