what you mean by breathing? define inhalation and exhalation
Answers
Answer:
We breathe to stay alive.
Explanation:
During inhalation the air goes inside the body and lungs inflate. During exhalation the air comes out and our lungs relax.
Answer:
Difference Between Inhalation and Exhalation
The table below shows the differences between inhalation and exhalation
Inhalation Exhalation
What it means
Intake of air into the lungs Expelling air out of the lungs
Type
Active process Passive process
Size of the chest in the process
Increases, expands Decreases, reduces
Diaphragm – role
Contracts, gets flattened by moving down Relaxes, moves up forming a dome-shape
Intercostal muscle – role
Relaxation of internal intercostal muscles and contraction of external intercostal muscles Contraction of the internal intercostal muscles and relaxation of external intercostal muscles
Lungs – volume
Rises to cause inflation Reduces causing deflation
Action it causes
Supply of oxygen-rich air to the blood Carbon dioxide is expelled out
Air composition
Inhaled air is a mix of oxygen and nitrogen Exhaled air is a mix of nitrogen and carbon dioxide
Air pressure
Decrease Increase
Effect of intercostal muscles
Ribcage moves upwards and outwards Ribcage moves downwards.
