1. Do Now: Get notebook, pencil, and circulatory system diagram/poster
Start a new Do Now page
At top of page write Do Nows for week of 2/5
Compare and contrast arteries and veins
Explain why capillaries are so important to the circulatory system

2. Respiratory System Engage Video
What is being shown in the video?
What do you think it represents?

3. Essential Questions
What is the main function of the respiratory system?
What is the organs that make up the respiratory system?

4. Glue notes onto the next available page

5. Respiratory System
A series of organs which take in oxygen and give off carbon dioxide (primary function)
Primary organ is the lungs that carries out the exchange of gases as we breath

6. Nasal and Oral Cavities
The respiratory system begins here at the nose and mouth
The air is moistened, warmed, and filtered as it enters the body
Nasal Cavity
Oral Cavity

7. Pharynx (Throat)
The passage that leads from the nose and mouth to the larynx
Same tube as food passed through, so the epiglottis (flap that acts as a switch) plays a role again to stop food going down your wind pipe

8. Larynx
Hollow muscular organ which holds the vocal cords (voice box) which produces sound

9. Quick Action – Respiratory System
Say Something
Those are some big vocabulary words. Discuss with a partner your understanding of the words pharynx, larynx, and epiglottis.
Where are they located, and what is their function in the respiratory system? Which one is part of the digestive system, too?

10. Trachea and Bronchus
Trachea- a hollow tube (wind pipe) that connects larynx to the right and left bronchus
Bronchus (bronchi)- the two major air passageways leading from the trachea to the lungs

11. Bronchioles and Alveoli
Bronchioles- the smallest air passageways coming off of the bronchi
Alveoli- air sacks at the end of bronchioles where gas exchange takes place (oxygen in and carbon dioxide out)

12. Diaphragm
A sheet of skeletal muscle that extends across the bottom of the heart and lungs
Pulls and pushes against the lungs as we inhale and exhale
Aids the lungs in expanding and contracting

13. Respiratory Video

14. Respiratory Activity
We are going to tie the function of the respiratory system to the function of the circulatory system
Write a tragedy story about two characters in love, one named Oxygen and the other named Carbon Dioxide.
Explain the path that both take through the circulatory and respiratory system
Describe in detail if they are in love why this is considered a tragedy story.