Respiration End Of Unit Test Flashcards
There walls are very…
Thin
Alveoli cover a
A) small
B) large
Surface area
B
Gases…………..through the walls
Diffuse
The alveoli are MOIST so the gasses…………….
Dissolve
The alveoli is surrounded by a large network of ……………
Capillaries
Which gas diffuses through the walls of the alveoli
Oxygen
The alveoli transfers oxygen into the ……..
Blood
What do red blood sells contain
Haemogoblim
What does the carbon dioxide diffuse from
The plasma
What helps gas exchange
Thin alveoli wall
Thin layer of moisture which dissolves the gas
Thin capillary wall
Where does gas exchange happen?
At the alveoli
Where is the alveoli
Connected to the bronchioles in the lungs
On a model what happens to the lungs when the rubber diaphragm is pulled down
The lungs (which are balloons) will inflate
What happens when the rubber diaphragm is pushed up again
The lungs deflate
Pressure always changes
A) high to low
B) low to high
A
When inhaling the diaphragm muscle ……… …. …….. ………
Contracts and moves down
When the rib muscle contacts the rib cage ……………..
Expands
Where does the aorta go
To the rest of the body
Where does the pulmonary artery go to
The lungs
Where does the vena cava come from
The rest of the body
Where does the pulmonary vein come from
The lungs
Four chambers of the heart
Right ventricle, left ventricle, right atrium, left atrium
Which Chambers have the thinnest walls
The atriums/atrial
Which chamber has the thickest walls
Left ventricle
The left ventricle has the thickest walls because …..
It has to pump blood around the whole body
What do valves do
Stop the back flow of blood
