www.youtube.com/watch?v=bHZsvBdUC2I
- How did early organisms obtain the oxygen then needed to survive?
- What is diffusion?
- What adaptation allowed animals to grow larger and more diverse?
- What makes up your respiratory systems?
- Why can’t humans obtain their oxygen by simple diffusion?
- Describe “Bulk flow”.
- Because your lungs need to expand they do not have retractable muscles. What other parts of your body “pump” your lungs.
- What important function do your nose and sinuses perform?
- Why do our lung cells need to stay moist?
- Why is it important that your trachea is made of ridgid rings?
- Where in the lungs does diffusion meet bulk flow?
BLOOD TYPING QUESTIONS