What is the name of the bone that connects the arm to the trunk of the body?

The bone that connects the arm to the trunk of the body is the clavicle. The clavicle, commonly known as the collarbone, serves as a crucial link between the upper limb and the torso, acting as a strut that holds the shoulder in place. This positioning allows for a wide range of motion for the arm while also providing stability during movement. The clavicle articulates with the sternum at one end and with the scapula at the other, forming a vital component of the shoulder girdle. Its unique shape helps to protect underlying neurovascular structures while facilitating arm movements, making it essential in maintaining the overall function and mobility of the upper body.