Answer:
decreases; rises; out of
Explanation:
When the diaphragm contracts, the size of the thoracic cavity decreases, the pressure inside the thoracic cavity increases, and air flows out of the lungs.
During the process of breathing out, the diaphragm and the intercostal muscles relax and this leads to a decrease in the volume of the thoracic cavity. Since there is an inverse relationship between volume and pressure, the decrease in the volume of the thoracic cavity leads to an increase in its pressure. Consequently, the lung contracts and air is forced to leave it.
The diaphragm is a muscular structure, which is present below the lungs. The relaxation and contraction of the muscles help in the increasing and decreasing of the thoracic cavity during the breathing process.
The statement for the given blanks are:
When the diaphragm contracts, the size of the thoracic cavity increases, the pressure inside the thoracic cavity decreases, and airflow into the lungs.
The working of the diaphragm can be given as:
1. The diaphragm will contract during the inhalation process. The diaphragm will pull downward which will increase the size of the thoracic cavity and cause a decrease in pressure.
2. The change in the pressure will result in the rushing of air inside the lungs, and will fill up the lungs.
Thus, the contracting and relaxing of the diaphragm will result in the breathing process.
To know more about the diaphragm, refer to the following link:
https://brainly.com/question/1656972
