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IGCSE /GCSE -POWER POINT PRESENTAION ON BREATHING AND GAS EXCHANGE $7.99
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IGCSE /GCSE -POWER POINT PRESENTAION ON BREATHING AND GAS EXCHANGE

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This document is a power point presentation suitable for the teachers and students on breathing and gas exchange .This is suitable for IGCSE edexcel Cambridge and GCSE

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  • November 21, 2022
  • 33
  • 2022/2023
  • Presentation
  • Unknown
  • Secondary school
  • 4
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Cha - 3 Breathing and Gas Exchange – Part 1
Objectives:
§ Identify the structure of human gas
exchange system.
§ Differentiate between gas exchange and
ventilation

, Introduction
Human gas exchange system.

,●Differentiate between gas exchange and
ventilation.
Gas exchange is the movement of gases into and out
of the cells of the body.
Ventilation (breathing) is the movement of air into
and out of the lungs.

● Why it is better to breathe through your nose than through
your mouth?
Nose is lined with mucus and contains hair to trap dust and
microbes. Also it is lined with blood capillaries to warm and
moisten the inhaled air.

, Human gas exchange system.

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