Respiratory System


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How to get the most from the revision slides
  • Have a pen & paper ready
  • Answer every question
  • Attempt to label all slides
  • Mark your answer after answering
  • Elaborate on each answer
  • Add relevant clinical content
  • If you have trouble, ask - you know where


Community of Truth

What is my answer?
What is the correct answer?
I am am wrong, what was my error?
THUS: Find the truth

Philosophy 1

What is the least amount of work I can do so I can get out of here.

Philosophy 2

Today and Now I will do something for my future self.

Slides: Respiratory System

  • Slide 71: Nostril
  • Slide 72 & 74: Lung
  • Slide 73: Trachea
  • Slide 108: Olfactory epithelium
  • Slide 111: Epiglottis

Retrieval Practice



  • Ink
  • Best Effort
  • No consultation
  • Do not look up the answers

Please note: Answer slides run in parallel


  • Is this a good reflection of your knowledge?
  • Did you improve on your previous attempt?
  • What sections do you need to spend some extra time on?
  • Do you need clarification for any specific section?

Important concept


External nose > Alveolus

Go with the flow

Trace the air flow of respiratory system starting with the nostrils.

What path does a molecule of oxygen take to reach the blood?

What sights will it see along the way?

1. Outside air

2. ??

3. ...

4. Toes

The cardiovascular system needs to be connected to the respiratory system.

Path of O2 and CO2

  • List complete
  • With layers
  • And cells
  • And function of each
  • Make use of drawings and diagrams

Ciliated simple epithelium

What cells are present in simple ciliated epithelium?

Ciliated simple epithelium

  • Goblet cells
  • Basal cells
  • Ciliated columnar cells
  • Non-ciliated columnar cells
Name three types of contractile cells.
Olfactory epithelium

Respiratory epithelium

  • Pseudostratified
  • Ciliated
  • Columnar
  • Epithelium with
  • 4 Cells
    • Ciliated columnar cells
    • Non-ciliated columnar cells
    • Goblet cells
    • Basal cells
Bronchi - Transitions
  • Intrapulmonary bronchi
    • Irregular cartilage
    • Respiratory epithelium
    • Glands
  • Bronchioles
    • Smooth muscle REPLACE cartilage
    • Ciliated columnar → Ciliated cuboidal
    • NO glands - goblet cells -> secretory cells
  • Terminal bronchioles
    • Smooth muscle
    • Ciliated cuboidal epithelium
    • Secretory cells
  • Respiratory bronchioles
    • Conducting -> Respiratory
    • Simple cuboidal epithelium
    • Secretory cells
    • Alveoli
Clara cells

Bronchiolar Exocrine Cells

Read more about the use of eponyms.

The functioning of the blood-air barrier

Blood-Air Barrier


Other barrier systems in the body?

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On or Before

Friday 21 February 2020

Last Practical 18 & 19 February