1. B A D C Mind Stretcher – 1/22/17
Put the following images in order from smallest to largest. Add whether each is a tissue, cell, organ system or organ too! B A D C

2. Answer: B- cell, C-tissue, D- organ, A- system

3. Who Knows….. Two functions of the respiratory system?
1. ______________________________
2. ______________________________

4. Respiratory System Functions:
1. To take in oxygen 2. To eliminate waste in the form of carbon dioxide

5. Human Body: Respiratory System
Parts of the respiratory system include:
Larynx (vocal box)
Trachea
Bronchi
Bronchioles
Lungs
Alveoli

6. Moving Air in and Out
When you inhale (breathe in), the diaphragm and rib muscles contract.
When you exhale (breathe out), these muscles relax. The diaphragm pushes upwards.

7. Alveoli
The alveoli are moist, thin-walled pockets which are the site of gas exchange.
This is where the oxygen enters the bloodstream and the carbon dioxide leaves!

8. Respiratory System Info:
Oxygen is essential to life. We use the oxygen we breathe and the food we eat to produce energy. Physical activity increases our need for energy; increasing the use of oxygen and nutrients. The body can store some of the things it needs to function. However, oxygen cannot be stored for more than a few minutes at a time. At rest the blood holds about a quart of dissolved oxygen, but it is constantly being used by the cells to produce energy during respiration. The respiratory system must work all of the time to supply enough oxygen to the body.

9. Ted Ed- How does breathing work?

10. Ted Ed- What do the lungs do?

11. Directions: Complete Edhelper silently & turn in! (put dividers up)
Read Ch (starts on p. 620 in book)
AFTER reading…complete the Respiratory organizer provided- due by WED (start on any side!)
Finished? Study OR finish your notes organizer using PPT on blog (if you haven’t already!!)