Respuesta :
Contracting the diaphragm. When the diaphragm contracts, it moves downward, which increases the space in your chest cavity, allowing the lungs to expand and take in air.
Respiration is a biological process important for living beings. It involves taking oxygen into the body while the carbon dioxide is thrown out from the body.
The inhaled oxygen is used by the body cells and tissues for biochemical processes.
The correct answer for the blank is:
Contract.
- During respiration, the lungs need to move and eventually gets filled with oxygen.
- The diaphragm lies above the abdominal cavity and its movements cause inhalation and expiration of the gases.
- When the diaphragm contracts it increases the internal cavity of the lungs making space for oxygen to enter.
Therefore, inhaling requires one to enlarge the thoracic cavity by contracting the diaphragm.
To learn more about diaphragm and respiration follow the given link:
https://brainly.com/question/23723497
