Breathing Flashcards
What do cells need to do to release energy
Respire
How is energy used in organisms
To stay alive, to make new substances and to help them move
What respiration uses oxygen
Aerobic respiration
Formula for aerobic respiration
Glucose + oxygen - carbon dioxide + water
How is glucose supplied
Digestion of carbohydrates
What is glucose absorbed into the blood by and dissolved into.
Absorbed by the small intestine and carried around the body dissolved in the plasma of the blood
What happens after the blood is dissolved into the plasma
The blood travels through blood vessels and is pumped by the heart
What forms the circulatory system
Heart and blood vessels
What is on the end of the trachea
Bronchus
What are alveoli
Tiny pockets in the air sac
Where are air sacks
Inside the lungs
Where are the alveoli
Inside the air sacks
What goes into the alveolus from the capillaries
Carbon dioxide goes into the alveolus to be breathed out
What enters the capillary
Oxygen from inhaled air enters the capillary
How many chambers are in the heart
4
What flows through the capillaries
Red blood cells
What great vets the lungs a large surface area
The alveoli
Why do lungs have a large surface area
So that oxygen can quickly diffuse from the air inside the lungs into the blood contained in capillaries
What makes it easy for oxygen to diffuse into blood in the capillaries
The walls of the alveoli are only one cell thick
Once oxygen has diffused into the blood, how is it carried round
Carried round by red blood cells to capillaries around the body
What leaks out of the capillaries
Tissue fluid
What does tissue fluid contain
Oxygen and glucose
What diffuses out of the blood in the lungs
The dissolved carbon dioxide diffuses out of the blood and into the air in the lungs
What do we breathe out more
Carbon dioxide
