What control(s) the functioning of organs.

The nervous system controls the functioning of all the organs of our body. Its is like a central system which acts like a communication network. It regulates the functioning of the body by directing the organs to perform the tasks properly. Thus, the nervous system in our body controls the functioning of the body organs.

Smoking damages the respiratory system by inhalation of a foreign substance, that is absorbed and residue is left behind on our lungs sponge like substance. the gas that is inhaled also increase your blood pressure and dilates your blood vessels. also the process of inhaling and exhaling the smoke it causes irritation to the throat and mouth. smoking can cause lung cancer and other respiratory and circulatory diseases.