Respiration Flashcards
What is the word equation of respiration
Glucose +oxygen ————-> Carbon dioxide + water + energy
What is the test for carbon dioxide
Turns limewater milky
Carbon dioxide levels can be detected using bicarbonate indicator
If carbon dioxide levels increase what is the colour change
Red to yellow
What is colour change if carbon dioxide levels decrease when Tested with bicarbonate indicator
From red to purple
What is the order that air travels through to get to your alveoli
Nose - trachea- bronchi- bronchioles- alveoli
What is another name for the windpipe
Trachea
Where in your lungs does gaseous exchange occur
Alveoli
What are the small hairs in the nasal cavity for
To trap the dirt in the air that’s breathed in
Why are the ribs important
Protect lungs and heart
What is the name of the material that keeps the airways open
Cartilage
What is the name of the muscle found in between the ribs
Intercostal muscle
What happens when you inhale(breathe in)
Intercostal muscles contract
Ribs move up and out
Diaphragm contracts and flattens
Volume in lungs increase
Pressure decreases
Air enters as pressure lower inside lungs to surrounding
What happens when you exhale
Intercostal muscles relax
Ribs move down and in
Diaphragm relaxes and moves up into doom shape
Volume decreases in lungs causing pressure to increase
Air forced out
What is important about the alveoli
There are milions of them in lungs
They have a large surface area for gas exchange
They are thin walled
They have a good supply so the gases can enter and leave the alveoli
They have moist walls to make it easier for gaseous exchange
Which gas enters the blood from alveoli
Oxygen
