Eventually, the bronchi become known as bronchioles â the smallest air tubes in the lungs. This system of air tubes can be thought of as an upside down tree, with the trachea being the main trunk and the bronchi and bronchioles being the branches. The medical term for all the air tubes is 'the respiratory tract'.
An injury to the vertebrae or discs in your neck can cause pain, numbness, or weakness in your shoulder, arm, wrist, or hand because the nerves that extend out from between the neck provide sensation and allow for movement in these areas.
Numbness and tingling can be caused by a number of factors including: 1  Remaining in the same position (seated or standing) for a long time.  Injury or pressure on a nerve (for example, a back injury can cause numbness in the legs or feet, and a neck injury can cause numbness in the arms and hands).