Inspiration vs. Expiration
Main DifferenceThe main difference between Inspiration and Expiration is that Inspiration (inhalation) is the method of taking air from the outside into the lungs, whereas Expiration (exhalation) is the method of releasing air from the lungs to the outside.
Difference Between Inspiration and Expiration
Inspiration vs. Expiration
The inspiration is known as the active process, which brings air into the lungs, while the expiration is the passive method that excludes air out of the lungs to the outer environment.
Inspiration vs. Expiration
During the inspiration process, the inspired air consist of oxygen-nitrogen mixture; on the other hand, during the expiration process, the expired air consist of the mixture of carbon dioxide and nitrogen.
Inspiration vs. Expiration
The method of inspiration is also called as the inhalation process; on the flip side, the act of expiration is also known as the exhalation process.
Inspiration vs. Expiration
During inspiration, the mass of the chest cavity increase, whereas during the process of expiration, the mass of the chest cavity decreases.
Inspiration vs. Expiration
The intercostal muscles present outside contracts, and the intercostal muscles inside become relaxed during inspiration, while the outside intercostal muscles during expiration relaxed and internal intercostal muscles contract.
Inspiration vs. Expiration
The function of intercostal muscles includes forward and outward movement of the rib cage in inspiration; on the other hand, the function of intercostal muscles during expiration is the downward and inward movement of the rib cage.
Inspiration vs. Expiration
In the gaseous exchange, oxygen enters into the lungs in the course of inspiration; on the contrary, during expiration, carbon dioxide is removed from the lungs.
Inspirationnoun
The drawing of air into the lungs, accomplished in mammals by elevation of the chest walls and flattening of the diaphragm, as part of the act of respiration.
Expirationnoun
The act of expiring.
Inspirationnoun
(countable) A breath, a single inhalation.
Expirationnoun
The act or process of breathing out, or forcing air from the lungs through the nose or mouth
respiration consists of inspiration and expirationInspirationnoun
A supernatural divine influence on the prophets, apostles, or sacred writers, by which they were qualified to communicate moral or religious truth with authority; a supernatural influence which qualifies people to receive and communicate divine truth; also, the truth communicated.
Expirationnoun
Emission of volatile matter; exhalation.
Inspirationnoun
The act of an elevating or stimulating influence upon the intellect, emotions or creativity.
Usage notes: In this sense, it may be followed by the adposition to in relation to the person being influenced, and for or to in relation to the idea or activity:Expirationnoun
(euphemism) The last emission of breath; death.
Inspirationnoun
A person, object, or situation which quickens or stimulates an influence upon the intellect, emotions or creativity.
Expirationnoun
A cessation, extinction, ending
Inspirationnoun
A new idea, especially one which arises suddenly and is clever or creative.
Expirationnoun
That which is produced by breathing out, as a sound.
Inspirationnoun
arousal of the mind to special unusual activity or creativity
Expirationnoun
a coming to an end of a contract period;
the expiry of his driver's licenseInspirationnoun
a product of your creative thinking and work;
he had little respect for the inspirations of other artistsafter years of work his brainchild was a tangible realityExpirationnoun
euphemistic expressions for death;
thousands mourned his passingInspirationnoun
a sudden intuition as part of solving a problem
Expirationnoun
the act of expelling air from the lungs
Inspirationnoun
(theology) a special influence of a divinity on the minds of human beings;
they believe that the books of Scripture were written under divine guidanceInspirationnoun
arousing to a particular emotion or action
Inspirationnoun
the act of inhaling; the drawing in of air (or other gases) as in breathing
Comparison Chart
| Inspiration | Expiration |
| The method of taking air into the lungs is known as inspiration. | The act of expulsion of the air out from the lungs is known as the expiration. |
| Also Known As | |
| Inspiration is also known as the inhalation process | Expiration is also known as the exhalation process |
| Active or Passive | |
| An active process | A passive process |
| Diaphragm | |
| The diaphragm moves towards down by contraction and becomes flat | The diaphragm moves up through relaxing and change into dome-shaped |
| Intercostal Muscles | |
| The external intercostal muscles contract and on the other hand the internal intercostal muscles relax | The outer intercostal muscles relax while the internal intercostal muscles contract |
| Intercostal Muscles Function | |
| The rib cage moves forward and towards outward during the process through the action of intercostal muscles | The rib cage moves downward and towards inward during the process by the action of intercostal muscles |
| The Size of the Chest Cavity | |
| The size of the chest cavity increases | The size of the chest cavity decreases |
| Air Pressure | |
| The air pressure inside the lungs decreases because of the increase in the volume of the chest cavity | The air pressure inside the lungs increases due to the decrease in the volume of the chest cavity |
| The Movement of Air | |
| Air moves towards the lungs | Air moves out of the lungs |
| Gas Exchange | |
| Oxygen moves inward the lungs | Carbon dioxide is taken out from the lungs |
| Chemical Composition of Air | |
| Inspired air consist of an oxygen-nitrogen mix | Expired air consist of carbon dioxide-nitrogen mix |
| Internal Pressure | |
| The pressure of air in the lungs is less than the atmospheric pressure | The pressure of the air inside the lungs is higher than the atmospheric pressure |
Inspiration vs. Expiration
Inspiration is also known as the inhalation, considered as the process of drawing air inside the lungs. Expiration, also called the exhalation, viewed as the process of releasing air to the outside from the lungs through mouth or nose.
During inspiration and taking air into the lungs, the diaphragm moves towards down by contraction and becomes flat; on the other hand, during expiration, when air moves out from the lungs, the diaphragm moves up by relaxing and change into dome-shaped. Moreover, during the process of inspiration, the outer intercostal muscles contract. On the other hand, the internal intercostal muscles relax; on the flip side, during the process of expiration, the outer intercostal muscles relax while the internal intercostal muscles contract.
By the action of intercostal muscles, the rib cage moves forward and towards outward during the process of inspiration; on the contrary, through the action of intercostal muscles, the rib cage moves downward and towards inward during the process of expiration. During inspiration or inhalation, the size of the chest cavity increases; on the other hand, during the expiration or exhalation process, the size of the chest cavity decreases.
Due to the increase in the volume of the chest cavity during the act of inspiration, the air pressure inside the lungs decreases; on the flip side, due to the decrease in the volume of the chest cavity during expiration, the air pressure inside the lungs increases. In the course of inspiration, the air moves towards the lungs, while during the expiration, the air moves out of the lungs.
What is Inspiration?
Inspiration is known as the phase of taking air into the lungs during breathing. Inspiration is also known as the inhalation process, and it is an active process because it is the involvement of the contraction of the muscles.
Typically, in the process of regular inspiration, the two groups of muscles involved which are diaphragm and the outer intercostal muscles. In this process, the contractions occur in the diaphragm, moving it downward about the abdomen cavity and increasing the space of the thorax cavity.
In the meantime, the outer intercostals muscle contract and move the ribs outward and upward and expand the volume or quantity of the thoracic cavity. Besides, the enlargement of the thoracic cavity results in the intensifying of the lungs because of their adhesion to the pleural fluid. As a result, this expansion of the thoracic cavity is the decrease in intra-alveolar pressure, which is lower than the atmospheric pressure, and this pressure gradient results in the atmospheric pressure to enter into the lungs.
The process of inspiration is vital for taking oxygen inside the blood. The normal estimated air breathe consists of 21% of oxygen (O2) and 0.04% of carbon dioxide (CO2). The amount of needed oxygen increased when we do exercise, and this automatically increases the uptake of oxygen and makes breathing faster. This increased uptake of oxygen is known as VO2.
What is the Expiration?
Expiration is known as the passive process for taking out the air from the lungs. Normally, the liberating out the air from the lungs does not require any energy. So both the muscles diaphragm and external intercostal muscles become relax during expiration by recoiling the lungs.
The lessening of the diaphragm and intercostal muscles results in a decrease in the volume of the thoracic cavity and an increase in the interpulmonary pressure, which is higher than the atmospheric pressure. As a result, ultimately, the air which is present inside the lungs liberates out of the lungs.
ConclusionThe above discussion concludes that inspiration is the active process because of the involvement of muscle contractions. At the same time, expiration is known as the passive process, which is the involvement of muscle relaxation. Inspiration is responsible for taking air into the lungs, whereas expiration is liberating of the air out from the lungs.
