What Is The Respiratory System?
The respiratory system is the organs and other parts of your body involved in breathing when you exchange oxygen and carbon dioxide.
- Nose and Nasal Cavity
- Throat (pharnyx)
- Windpipe (trachea)
- Bronchial Tubes/Bronchi
- Air Sacs (alveoli)
Inhalation and Exhalation
As the bronchial tubes pass through your lungs, they divide into smaller air passages called bronchioles. The bronchioles end in tiny ballon-like air sacs called alveoli. Your body has about 600 million alveoli. The alveoli are surrounded by a mesh of tiny blood vessels called capillaries. Here oxygen from inhaled air passes into your blood. After absorbing oxygen, blood goes to your heart. Tour heart then pumps it through your body to the cells of our tissues and organs.
Inhalation and exhalation are how your body brings in oxygen and gets rid of carbon dioxide. The process gets help from a large dome-shaped muscle under your lungs called the diaphragm. When you breathe in, your diaphragm pulls downward creating a vacuum that causes a rush of air into your lungs. The opposite happens with exhalation. Your diaphragm relaxed upward, pushing. on your lungs, allowing them to deflate.