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The diaphragm contracts and a vacuum is created inside the thorax. The lungs expand to fill the space created, as reduced air pressure allows air to expand the lungs. The intercostals' muscle contract and lift the ribcage further increasing the thoracic space.

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15y ago

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What is the interval between expiration and inspiration?

The interval between expiration (breathing out) and inspiration (breathing in) is called the respiratory cycle. During this cycle, the lungs expand and contract to allow air to move in and out of the body.


What do you call air moving through the respiratory tract during inspiration?

During inspiration, air moving through the respiratory tract is called inhalation. This process involves the diaphragm and rib muscles contracting to expand the chest cavity, allowing air to enter the lungs.


What gas enters the blood during inspiration?

Oxygen is the gas that enters the blood during inspiration. It is taken into the lungs from the outside air and then diffuses into the blood vessels in the lungs.


How do the lungs take in and breathe out?

During inspiration the ribs move upwards and outwards and the diaphragm contracts ,thus,increasing the volume of the thoracic cavity.this leads to a decrease in pressure inside the lung.therefore the air from outside rushes in . During expiration the ribs move inwards and downwards and the diaphragm relaxes thus,creating low pressure .this leads to the expulsion of air from our body.


What happens during inspiration and expiration?

During inspiration, the diaphragm and intercostal muscles contract, expanding the chest cavity and allowing air to rush into the lungs. During expiration, the diaphragm and intercostal muscles relax, causing the chest cavity to decrease in size and air to be pushed out of the lungs.


How does the air move during day time and during night time?

the cool air pushes the warm air


How does pneumothorax affect lung pressure and aleveolar pressure when inspiratory muscles contract?

A pneumothorax is air in the plural cavity. When a person takes a breath the lung cannot expand. This expatiation normal lowers the pressure in the lungs allowing air to move into the longs, without expatiation during inspiration the pressure does not change and air will not move in.


What are inspiration and expiration in relationship to breathing?

inspiration is when air is breathed in through the mouth or nose which then goes into the air passage and into the alvioli which transfers the oxygen around the circulatory system to be used by the working muscles.expiration is breathing out.impure air containing CO2 is let out during tat process


What muscle is the prime mover of inspiration?

The diaphragm is the prime mover of inspiration, as it contracts and flattens during inhalation, creating a vacuum in the chest cavity that allows air to be drawn into the lungs.


How does the expansion of the chest wall expand the lungs during inspiration?

the air goes up to the chest cavity. Hope this helps you!


How does the air move during night time and day time?

the cool air pushes the warm air


Period of breathing when air leaves the lungs?

Inspiration.