When you inspire to take a breath what happens to the pressure and volume in the lungs?

Answer 1

When the diaphragm contracts the lungs are pulled down. This creates space in the lungs for air to rush in because air pressure is greater outside the body than inside the body. So in order to reach an equilibrium the air outside rushes into the lungs when you inhale.

To my little knowledge of the body,the lungs collapse on exhaling and expand on inhaling.As the brain controls everything,except the heart, the heart has cells which can think for itself.If the brain stopped functioning,the heart can still beat as long as it has oxygen in the lungs.As soon as the air is used up the heart will eventually stop.When you sleep your heart keeps the lungs inhaling and exhaling to maintain life until you awake.Then the brain goes into a rest period and just gives the heart and lungs a slight electric shock to keep them going. If Im wrong here please let me know.

Answer 2

When you take a breath, the volume in the lung increases, and the pressure decreases.

Answer 3

No, it decreases. Your diaphragm pulls down towards your stomach and intestines making the space in your thoracic cavity (chest) greater thereby decreasing the pressure.

Answer 4

it enters the boby