0
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!
What else can I help you with?
What is the main force for pushing air out of the lungs?
The main force for pushing air out of the lungs is the contraction of the diaphragm and intercostal muscles. During exhalation, these muscles relax, causing the volume of the thoracic cavity to decrease, which increases the pressure in the lungs, forcing air out.
What happens when a person inhales?
Air is forced into the lungs.
Under what internal condition does air tend to flow out of the lungs?
Air tends to flow out of the lungs when the internal pressure of the lungs is higher than the atmospheric pressure. This pressure difference is created by the contraction of the diaphragm and intercostal muscles during exhalation, which reduces the volume of the lungs and forces air out.
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.
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.
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 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 does the diaphragm works?
The diaphragm is a dome-shaped muscle located beneath the lungs that contracts and flattens when you inhale, creating a vacuum in the chest cavity that allows air to rush into the lungs. When you exhale, the diaphragm relaxes and returns to its dome shape, pushing air out of the lungs. This process of contraction and relaxation allows for breathing to take place.
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 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. :)
