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Presentation Life Sciences (Biology)-Gaseous exchange

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With this presentation, you are able to understand the important concepts of the Section Gaseous Exchange. If you want an A+ I suggest you buy these notes. As they are your path to success!!!

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  • August 24, 2024
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  • 2024/2025
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Systems in the Human
Body

, The Respiratory system
Grade 11




Compiled by J Gibson Presented by J Gibson & M Vermeulen

, Terminology
INHALATION EXHALATIO
N
BREATHING
The mechanical BREATHING GAS EXCHANGE
process whereby air
The exchange of
moves in and out of
oxygen (O2) and
the lungs
carbon dioxide
(CO2) across a
gaseous exchange
WHAT HAPPENS
surface.
TO THE O2?
WHERE DID THE
CO2 COME
FROM?
GAS EXCHANGE

, GRADE 10 REVISION – GAS EXCHANGE


In the respiratory system it occurs:
• at the alveoli
• at all metabolically active cells

Happens through diffusion:

Passive movement of substances
from an area with a high
concentration


to an area with a low
concentration.

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