Ch. 7.10 - Lymphatic System and Immunity - Respiratory System
Alveoli
Tiny air sacs in your lungs where oxygen goes into your blood and carbon dioxide comes out
Epiglottis
The small flap that covers your windpipe when you swallow to keep food out
Larynx (voice box):
The part of your throat that contains your vocal cords and lets you speak.
Pharynx (throat):
The tube behind your mouth and nose that connects them to your windpipe and food tube.
Trachea (windpipe)
The main tube that carries air from your larynx (voice box) down toward your lungs.
Bronchi
The two main tubes that split off from your windpipe (trachea), one going to each lung.
Expiration (exhaling)
Breathing out.
Lungs:
The two main organs in your chest that you use to breathe.
Pleura
A thin, moist lining that covers your lungs and the inside of your chest.
Ventilation
The simple act of moving air in and out of your lungs (breathing).
Bronchioles
Very small, branching tubes inside your lungs that lead to the air sacs.
External respiration:
The exchange of gases (oxygen in, CO2 out) between your lungs and your blood.
Nasal cavities:
The two hollow spaces inside your nose.
Respiration
The whole process of breathing (inhaling/exhaling) and gas exchange.
Cellular respiration
The process where your body's cells use oxygen to get energy from food.
Inspiration (inhaling)
Breathing in.
Nasal septum
The wall of cartilage that divides your nose into two sides.
Respiratory system:
All the parts of your body that help you breathe (nose, throat, windpipe, lungs, etc.).
Cilia:
Tiny hairs in your nose and airways that sweep out dust and germs.
Internal respiration
The exchange of gases (oxygen out, CO2 in) between your blood and your body's cells.
Nose
The part of your face you breathe and smell with.
Sinuses:
Hollow, air-filled spaces in the bones of your skull connected to your nose.