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Normal inspiration and expiration is directly related to contraction and relaxation of the diaphragm. This is involuntary act, normally.
Shana Bradtke
Wiki User
∙ 15y agoThe contraction of the diaphragm muscles expands the lungs causing a decrease in the internal pressure within the lungs. This sucks air in through the mouth or nose. When the diaphragm releases, the air is released. This is how people breathe.
Wiki User
∙ 11y agoThe diaphragm is the main muscle for both inspiration and expiration in most animals (birds don't have a diaphragm).
The diaphragm, by contracting and relaxing, changes the size of the thorax. This creates a difference in the pressure of air inside and outside the lungs, allowing for the flow of air into and out of the lungs.
Wiki User
∙ 12y agoDuring inhalation the diaphragm muscle contracts and this causes it to (effectively) move downwards, its previously upwardly curving shape becomes a flatter one, and this decreases the pressure in the thorax region (the region in which the lungs reside) because there is more air space. As a consequence, air rushes in from outside the body, via the nose and mouth, and fills the lungs with air. The alveoli in the lungs takes the air and sends it round the blood-stream.
Exhaling is, obviously, the opposite: The diaphragm relaxes, moves upwards to it's original, relaxed state, and thus increases the air pressure in the thorax area (because there is now less air space), this forces air that was not removed by the alveoli, and air that has returned to the lungs from the blood-stream, back into the atmosphere via the nose and mouth. Also, in and out of your nose ...air goes in and out
Wiki User
∙ 13y agoIt contracts and pulls the lungs downwards. This opens the lungs and chest cavity and allows air to come into the lungs.
Wiki User
∙ 10y agoNormal inspiration and expiration is directly related to contraction and relaxation of the diaphragm. This is involuntary act, normally.
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Does the diaphragm deal with inspiration or expiration?
The diaphragm regulates respiration - so both inhalation and exhalation. I reccomend this nt be placed in radiology as it is at the time of this writing.
What muscle is the prime mover of inspiration?
The Diaphragm.
Which muscies is responsible for inspiration when breathing?
The diaphragm, a sheet of muscles spanning the rib cage just below the lungs, is mainly responsible for both inspiration and expiration. The intercostal muscles are also used, expanding and contracting the the space between the ribs. The abdominal muscles are used to a lesser extent either by relaxing to allow further expansion of the diaphragm or contraction for rapid expulsion of air. (Note to the person who answered this question previously: "Inspiration" means to inhale. "Expiration means to exhale. Don't tell someone that they don't know what they are talking about unless you know what you are talking about.)
What are the two kinds of respiration that occur in the body?
Inspiration & expiration
What regulates smoothing of transitions from inspiration to expiration?
pontine respiratory group (PRG)
What is the main function of the internal and extercostal muscles?
They assist the diaphragm with inspiration and expiration.
Does the diaphragm deal with inspiration or expiration?
The diaphragm regulates respiration - so both inhalation and exhalation. I reccomend this nt be placed in radiology as it is at the time of this writing.
What is the importance of the characteristic of diaphragm in relation to its function during gas exchanges?
Normal inspiration and expiration is directly related to contraction and relaxation of the diaphragm. This is involuntary act, normally.
What is the interval between expiration and inspiration?
Interval between expiration and inspiration
What is the diaphragm muscle and the chest muscles are used for?
Breathing. These muscles are used to change the pressure in the chest so air can flow in and out of the lungs (on inspiration and expiration).
What is the difference between normal inspiration and expiration and forced inspiration and expiration?
my wang
What muscle is the prime mover of inspiration?
The Diaphragm.
What are the actions from the constructions in respiratory muscles?
Muscles of inspiration include: diaphragm, scalenes, pectoralis minor, and external intercostals. The muscles of expiration include: abdominals and internal intercostals.
Inspiration not equal to expiration?
Inspiration should equal to expiration;IE ratio and IT , inspiration equals tidal volume. It means that the patient is having trouble breathing.
Does emphysema make inspiration or expiration more difficult?
Yes, in asthma, bronchitis, emphysema expiration is difficult than inspiration..
An unpaired muscle that acts with the muscle to accomplish inspiration?
Inspiration is due to the contraction of the diaphragm and external intercostal muscles.
How do pressure changes within the chest cavity cause inspiration and expiration?
The diaphragm contracts, causing the lungs to expand. This creates a 'pressure difference' and air fills the lungs. When the diaphragm relaxes, it 'squeezes'[ the lungs, forcing the unabsorbed air (and waste gasses) back out again.
