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Actually, air isn't forced into the lungs my the contraction of any muscle, but by the relaxation of the Diaphragm, along with the Intercostalis muscles on the ribs and the smooth muscle on the lungs. When your diaphragm contracts, it pushes air out of your lungs. When it relaxes, air is drawn in to the lungs. The intercostalis muscles also help move the ribs when the lungs move as your breath. There is one set on the ribs and one set in between each rib.
Hope this helps!
Wiki User
∙ 12y ago
Wiki User
∙ 12y agoThe pressure of the air in the lungs is reduced.
The greater pressure of the air outside the lungs pushes air in
Wiki User
∙ 13y agoAtmospheric air pressure moves air into lungs during INSPIRATION.
Wiki User
∙ 11y agoThe air around us and gravity. It also depends on how much u take in, the more oxygen you breath in the faster it will get there.
Wiki User
∙ 12y agoThe diaphram
Wiki User
∙ 12y agoDiaphragm
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What is the main force for pushing air out of the lungs?
It is mainly the contraction of the rib cage that pushes air out of the lungs.
What happens when a person inhales?
Air is forced into the lungs.
What result from the contraction of these muscles and how is this accomplished?
Under what internal conditions does air tend to flow into lungs?
When the diaphragm contracts does lung volume increase or decrease?
The downward contraction of the diaphragm (below the lungs) decreases the pressure within the lungs by expanding the thoracic cavity. The lungs sag into the cavity, and outside air flows into the lungs.The contraction of the diaphragm allows the person (or animal) to inhale air. When the diaphragm relaxes, it pushes upward on the lungs and exhalation occurs.
Under what internal condition does air tend to flow out of the lungs?
Contraction of the rib cage causes an increase in internal lung pressure that results in the expiration of air from the lungs.
How is air moved out of the lungs?
The diaphragm, a muscle right at the bottom of you rib cage, pulls air into your lungs and pushes it back out.
The lungs contain a certain amount of air that cannot be forced out the volume of air is known as what?
this is called residual volume.
What is the important muscle of inspiaration?
Most important muscle of inspiration is the diaphragm, which upon contraction, pulls the base of the lung down and increases the pressure inside of the lung, drawing air into the lungs. Other muscles that are not as important except for in forced inspiration are the intercostal muscles and sternocleidomastoid muscles, which only work when forced expiration is required as well :)
How do frogs get air into their lungs?
When air enters into the mouth through the internal nostrils. Air is drawn in by lowering of the floor of the mouth and then the floor is raised, causing the air to be forced out of the mouth. Valves in the external nostrils prevent the air from being forced back outside, and it is forced into the lungs.Frogs breathe by gulping air into their mouth and then closing their mouth and nares (nostrils). They then lift up their lower jaw and tongue to make the space inside their mouth very small. This increases the pressure of the air inside their mouth and the air moves from the mouth (high pressure) to the lungs (low pressure). Air always moves from areas of high to low pressure.Breathing out is passive (i.e. doesn't require energy) and the the high elasticity of the frogs body wall helps push the air out of the body.Read more in the related link.
What is the process of the respiratory system moves air into and out of the lungs?
Contraction of the diaphragm reduces space in the rib cage and forces gases out of the lungs. As the diaphragm relaxes it increases the cavity size in the chest causing a drop in pressure, the decrease in pressure draws air in through the mouth or nose into the lungs. :)
Why is it important to breathing to have a closed chest cavity?
There would be a loss in the ability for the lungs to have pressure because air could be forced out of the wound during movement of the lungs.
What causes lungs to fill with air?
When the chest cavity expands and the diaphragm contracts, it creates more space in the chest cavity. The pressure decreases, and pulls on the lungs. The lungs fill with air to compensate for the lost space from the expansion and contraction.
