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When the diaphragm relaxes, the volume of the thoracic cavity decreases. The resultant decrease in thoracic cavity leads to an increase in the pressure. This increase in pressure leads to the exhalation of air out of the lungs into the atmosphere.

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15y ago
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13y ago

the volume increases when the pressure in the thoracic cavity when the diophram is pulled down.

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Q: What happens to the thoracic cavity when the diaphragm relaxes?
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Related questions

What muscular structure separates the thoracic and abdominopelvic cavity?

The diaphragm separates the abdominal from the thoracic cavity.


When exhaling what happens?

The diaphragm relaxes and reduces the space in the chest cavity.


What is the changes in size of thoracic cavity during the contraction and relaxation of diaphragm?

When the Diaphragm contracts, it is pulled down, and is pulled back up when it relaxes.Also, when you inhale, it contracts. When you exhale, it relaxes.


What major cavity is superior to the diaphragm?

In physiology superior means above. The cavity superior to the diaphragm is the thoracic cavity


What muscle is separating the thoracic cavity from the abdominal cavity?

The thoracic cavity is separated from the abdominal cavity by the diaphragm. This is a broad flat muscle. (muscular) diaphragmThe diaphragm is a muscle that separate the thoracic from the abdominal cavity. The pelvis is the lowest part of the abdominal cavity and it has no physical separation from it Diaphragm


Divides the thoracic cavity from the abdominopelvic cavity?

The diaphragm divides the thoracic cavity from the abdominopelvic cavity.


What is it called when the diaphragm relaxes and the chest cavity becomes smaller?

During exhalation the diaphragm relaxes and the chest cavity gets smaller.


What separates the abdominopelvic cavity from the thoracic cavity?

The diaphragm.


What are in the thoracic cavity?

The intercostals and the diaphragm.


How do you breathe using the diaphragm?

When you take a breath, the diaphragm contracts and when it does, it drops down. This increases the size of the thoracic cavity. Air pressure is now lower in it than outside. Air moves from a high pressure to a low pressure. Air rushes in and the reverse happens when the diaphragm relaxes.


What happens to the pressure and volume inside the thoracic cavity when you pull the rubber diaphragm down the lung model?

When the diaphragm is pulled down, the volume of the thoracic cavity increases, and the air pressure in the thoracic cavity decreases. This causes inhalation.


What organ separates the thoracic cavity from the abdonminal cavity?

Diaphragm