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Respirtaion
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Created by
Zunairah Hussain
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Cards (10)
Lungs
Function
:
Get the oxygen that we need from the air all around us into our bloodstream where it can be transported to the rest of the body
Air flow through the lungs
1.
Mouth
/
nose
2.
Trachea
3.
Bronchi
4.
Bronchioles
5.
Alveoli
Alveoli
Small sacks arranged like bunches of grapes
Site of
gas exchange
Alveolus
One layer of very
thin
cells
Large
surface area
Moist
walls
Oxygen concentration in alveoli
Higher
than in
blood capillaries
Carbon dioxide concentration in blood
Higher
than in
alveoli
Carbon dioxide
is
dissolved in blood plasma
,
not carried
by
red
blood cells
Blood keeps moving throughout the entire process with a constant supply of
deoxygenated
blood entering the capillaries and
oxygenated
blood leaving
Breathing rate
Calculated by
dividing
the number of breaths taken by the time in
minutes
Breathing
rate changes during
exercise