The diaphragm is a large, dome-shaped muscle that sits below your lungs. It's the primary muscle responsible for breathing. Here's how it works:
Inhalation (Breathing In):
1. Diaphragm Contracts: The diaphragm flattens and moves downward, increasing the space in your chest cavity.
2. Lungs Expand: This increased space creates lower pressure in your lungs, drawing air in through your nose and mouth.
Exhalation (Breathing Out):
1. Diaphragm Relaxes: The diaphragm returns to its dome shape.
2. Lungs Contract: The space in your chest cavity decreases, causing pressure to increase in your lungs, pushing air out.
In summary:
* Inhalation: Diaphragm contracts, lungs expand, air rushes in.
* Exhalation: Diaphragm relaxes, lungs contract, air rushes out.
Let me know if you have any other questions!