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Lesson Slides Unit 5 - Respiratory System £10.49
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  2.  
  3. PEARSON (PEARSON)
  4.  
  5. Applied Science 2016 NQF
  6.  
  7. Unit 5 - Principles and Applications of Science II

Lecture notes

Lesson Slides Unit 5 - Respiratory System
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This PPT has all the lessons for respiratory system - topic of unit 5 applied science - second year. It also has past paper questions embedded within the slides.

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  • January 7, 2025
  • 58
  • 2024/2025
  • Lecture notes
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Structure of Ventilation System
Aim of Lesson: to study the structure of Starter
the human ventilation system. Gl
Can you label any of the structures on th
You should be able to identify structures of the on page 8?
ventilation system on a diagram.
You should be able to describe the structure and
function of the components Why do humans need a specialized
You should be able to explain how mucous system?
membranes protect against infection.

Key Terms for the Lesson Diaphragm
Mucous Membranes
Trachea
Bronchi
Alveoli
Bronchioles

,Why do we need a ventilation system?
smaller SA:V ratio of humans, they need a specialised
Due to the ____________
exchange
_______________________ oxygen
system to get enough ________________ in
materials
body and remove the waste _________________________ from the bod


Oxygen is needed in the body as it is needed for
respiration
_______________________________. blood
It is absorbed into the __________
transported from the lungs to the tissues for aerobic respiration where __A
Energy currency
made which is used as the universal ______________________________
Carbon dioxide
In this process, __________________________________ is produced and
be removed from the body so it travels in the blood from the
Respiring tissues
________________________________ to the lungs.

,Site of Mammalian Gas Exchange: Lungs
2

1
3 4
5
11
6
8
12


7




10
9

13

, Feature Structure Function
Trachea  Ciliated epithelial cells  Main airway from mouth/nose into thorax
 Goblet cells Goblet cells + ciliated epithelial cells – p
 Smooth muscle against infection.
 C-shaped rings of cartilage Cartilage – prevents trachea collapsing an
open so air can flow




When the smooth muscle
contracts, what will it do to the
trachea?

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