Respiration

Respiration is the whole chain

Respiration is the whole chain of processes from inhalation of air to the use of oxygen in the cells. Cellular respiration is the chemical process in

Lavoisier and Priestley studied gases

Lavoisier and Priestley studied gases in the 18th century. Lavoisier found that the gas used in burning was the respirable part of air and that exhale

Air enters through the nostrils

Air enters through the nostrils, passes through the nasal cavity, pharynx, larynx, trachea, bronchi, bronchioles, and finally reaches the alveoli.

The epiglottis is a flap

The epiglottis is a flap-like muscular valve that controls the movement of food and air. It helps food go to the food pipe and air go to the wind pipe

The diaphragm is a flexible flattened

The diaphragm is a flexible flattened muscle at the floor of the chest cavity. It contracts and flattens during inhalation and relaxes into a dome sha