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.
Cramps or numbness in the hands could be caused by something normal: sleeping in a bad position and blocking blood flow is quite normal. But at other times, it doesnât have anything to do with your position. It is an unpleasant sensation that sometimes shows up in other areas of the body as well, like the legs or feet.