Y8 Breathing System Flashcards
What is the first part of the breathing system?
Air enters your body through your mouth and your nose.
How much nitrogen is in inhaled air (%)?
78%
How much Oxygen is in Inhaled air (%)?
21%
How much carbon dioxide is there in inhaled air (%)?
0.04%
What is the percentage of other gases in the breathing system (%)?
0.96
What is the second step of the breathing system?
Air moves down the trachea (windpipe).
What tissue does the trachea have to keep it open?
It has ring of cartilage.
What happens before the fourth step of the breathing system?
Air moves down a bronchus.
The bronchus splits into…
Many Bronchiole
The bronchiole contains ….
many alveoli
Alveoli is
Air sac
What is the trachea?
It has rings of cartilage to keep it open
What does the ribcage do?
The bones in it protects the lung.
What does the heart do?
It pumps blood around the body as it is a muscle.
What is the bronchiole?
It is a small tube for the air to travel in
What does the alveolus do?
It is where the oxygen gets diffused into the blood.
What happens to the intercostal muscles when you inhale and exhale ?
Inhale- they move up and out
Exhale- they move in and down
What is the job of the alveoli?
For oxygen to diffuse quickly into the de-oxygenated blood.
Why do we need many alveoli?
So more blood can pass around the body.
What happens to the volume inside our chest?
It increses
