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When Air moves out of the lungs the pressure inside the lungs is?
when air moves out of the lungs, the air pressure decreases
Condition which smooth muscles contractions reduce the size of air passageways in the lungs?
Asthma
The order or events that occur during expiration when the lungs are filled with air.?
four movements 1 inspirator muscles relax 2 thoracic volume decreases 3 thoracic pressure increases 4 air flows out of lungs
What system consists of lungs the throat and the passageways that lead to the lungs?
This is called the Respiratory System. It allows the body to breathe and receive air.
What purpose do Bronchioles have in the body?
The bronchioles or bronchioli are the air passageways through the nose or mouth to the lungs.
Where does air go when its in your lungs?
the diaphragm pushes up and the air flows out the diaphragm pushes down and the air flows in
What are Tiny sacs in the lungs called?
alveoli
Under what conditions does air tend to flow into the lungs?
Air tends to flow into the lungs when thoracic volume increases and pressure decreases. When the opposite is true, air leaves the 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.
What force cause air to move in an out of the lungs?
inhale:- the air pressure in the lungs decreases and air moves in. exhale:-air pressure in the lungs increases and air moves out.
What is the result of inspiration and expiration?
This occurs within the respiratory system. During inpiration, the intercostal muscles contract, the diaphragm descends, and the rib cage rises. The thoracic cavity volume increases, stretching the lungs, and the intrapulmonary volume increases. This causes the intrapulmonary pressure to drop. Air flows into the lungs until the intrapulmonary pressure equals the atmospheric pressure. During expiration the intercostal muscles relax, the diaphragm rises, and the rib cage descends. The thoracic cavity volume decreases, causing the the lungs to recoil, and the intrapulmonary volume decreases. This causes the intrapulmonary pressure to rise, and the air flows out of the lungs until the intrapulmonary pressure equals the atmospheric pressure.
If the pressure inside the lungs decreases outside air is pushed into the airways by what?
The pressure inside the lungs decreases as the ribcage moves out and up. Air from outside basically gets pushed in by other air molecules due to the pressure gradient (air moves from a high pressure to a low pressure)
