Respiratory system

This unit is divided into 3 topics:

respirstory system
1- The gas exchange system
2- Gas exchange
3- Breathing

How are we going to work?

Follow these instructions:

 

1 THE GAS EXCHANGE SYSTEM

By the end of this lesson you should be able to:

a- Identify in diagrams and name the larynx, trachea, bronchi, alveoli and associated capillaries.
b- Describe the structures named above.

Activities:

1) Watch this video

i- Is something wrong in the video? Post your answer in “comments”

 

2 GAS EXCHANGE

By the end of this lesson you should be able to:

a- Compare the composition of inspired and expired air.
b- List the features of gas exchange surfaces.
c- Describe gas exchange at the alveolus.

Activities:

1) Watch this video
2) Play this animation
3) Answer questions 1 and 2 from the photocopies given in class. (Helpful resource: text book)

 

3 BREATHING

By the end of this lesson you should be able to:

a- Describe how volume and pressure changes lead to ventilation of the lungs.
b- Explain the role of mucus and cilia in protecting the respiratory system from pathogens and dust particles.

Activities:

1) Watch this video
2) Read pages 122 and 123 from the book:Inspiration and Expiration. Pay special attention to the Figures.
3) Answer questions 3 and 4 a- from the photocopies.
4) Watch this video

5) Answer question 4 b- from the photocopy.

 

FINAL ACTIVITY

Comparing inspired and expired air:
a- Complete table from question 5 a- on the photocopy and answer the following question:

“During exercise, carbon dioxide builds up in muscle cells. Explain how this results in an increased rate of breathing.

FINAL REVISION

1- Activity: Shows a video. Very clear and simple. Watch it!
2- Test: Interactive multiple choice question. Try it!

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