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What is the function of the breathing system?
To breathe air in and out of the lungs.
What is the function of your lungs?
To exchange Co2 and O2 between the blood and the lungs.
Where are your lungs situated?
In your thorax
What is gas exchange?
The movement of oxygen from air to the blood and carbon dioxide in the opposite direction.
How are the alveoli well adapted for gas exchange?
- They're well ventilated
- They have a large surface area
- They have a good blood supply
- Their cell walls are thin
- They each have a thin layer of water so diffusion of the gases become quicker and easier
What is the Circulatory System's function?
To transport substances around the body.
What makes up the circulatory system?
Blood, Blood vessels and the heart.
What sides of the heart pumps deoxygenated and oxygenated blood?
- The right side pumps deoxygenated blood from the heart to the lungs
- The left side pumps oxygenated blood around the body
A fluid in the blood which carries other blood components
Play crucial roles in blood clotting
White blood cells
engulf invading pathogens
Red blood cells
Carry oxygen around the body
Carry blood away from the heart
Carry blood to the heart
Carry blood to the body cells
What are transverse waves?
These oscillate up and down whilst the wave pattern moves horizontally
The distance between two peaks or troughs
The distance between the equilibrium position and a peak or trough
The highest point of a wave
The lowest point of a wave
Middle of the wave
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