It increases.
It decreases, allowing air to flow in.
answer: diaphragm at the bottom of the chest cavity is a muscle called the diaphragm. when the diapragm contracts, the chest cavity becomes larger.
Depression results when the muscle fibers of the diaphragm contracts.
The Diaphragm
The diaphragm separates the chest from the abdomen and pelvis
answer: diaphragm at the bottom of the chest cavity is a muscle called the diaphragm. when the diapragm contracts, the chest cavity becomes larger.
The diaphragm contracts and moves downward during inhalation, which increases the volume of the chest cavity. This decrease in pressure in the chest cavity creates a pressure difference that allows air to flow into the lungs.
The diaphragm is located underneath the ribcage and separates the chest cavity from the abdominal cavity. It contracts and relaxes to help regulate breathing by controlling the volume of the chest cavity.
The diaphragm is a convex shaped muscle (convex side within the chest cavity).When the diaphragm muscle contracts it flattens out and drops down out of the chest cavity making more room and creating a vacuum -- air then rushes into the lungs.When the diaphragm relaxes it moves back up into the chest cavity and expels the air on the lungs. During inhalation, the increased volume of the lungs causes the ribcage to expand. Inhalation - Diaphragm CONTRACTS and moves DOWN (to allow more space in the chest cavity for lungs to expand).Exhalation - Diaphragm RELAXES and moves UP (to force air out of the lungs).
The diaphragm relaxes and reduces the space in the chest cavity.
When you inhale, the diaphragm contracts and moves downward. This movement creates more space in the chest cavity, allowing the lungs to expand and fill with air.
When you inhale, your diaphragm contracts and moves downward, expanding the chest cavity and drawing air into the lungs. The oxygen in the air is then exchanged with carbon dioxide in the blood. When you exhale, the diaphragm relaxes and moves upward, compressing the chest cavity and pushing air out of the lungs.