Alveoli
Tiny air sacs in the lungs where oxygen enters the blood and carbon dioxide leaves
Epiglottis
A flap that covers the windpipe when you swallow to stop food from entering the lungs.
Larynx
The voice box, which holds the vocal cords
Pharynx
The throat, a tube shared by the respiratory and digestive systems
Tranchea
The windpipe, the main tube carrying air from the throat to the bronchi.
Bronchi
The two main tubes (airways) that branch from the windpipe and lead into the lungs.
Expiration
The process of breathing out (exhaling) air.
Lungs
The two primary organs for breathing that take in oxygen.
Pleura
The thin, double-layered membrane that surrounds the lungs.
Ventilation
The simple movement of air into and out of the lungs
Bronchioles
Small, narrow branches that extend from the bronchi deeper into the lungs
External respiration
The exchange of gases between the air in the lungs and the blood.
Nasal cavities
The air passages inside the nose that warm and filter air
Respiration
the overall process of breathing and gas exchange
Cellular respiration
The process where cells use oxygen and sugar to make energy
Inspiration
The process of breathing in (inhaling) air.
Nasal septum
The wall that divides the nose into two separate nostrils.
Respiratory sysytem
The network of organs and tubes used to get oxygen and expel carbon dioxide
Cilla
Tiny, hair-like structures that sweep mucus and debris out of the airways
Internal respiration
The exchange of gases between the blood and the body's cells.
Nose
The entry point for air into the respiratory system
Sinuses
Air-filled spaces in the skull that help produce mucus and lighten the head.