1. Respiratory and Circulatory Systems

2. Other Animal’s Respiration: Sponge, hydra, planaria – diffusion from water Earthworm – skin Insect – spiracles and trachea lead to air sacs Fish – gills

3. Other Animal’s Circulation: Sponge, hydra, planaria – diffusion Earthworm – aortic arches Insect – dorsal heart Fish – 2-chambered heart Amphibian – 3 chambered heart Reptile and bird – 3+ chambered heart

4. These systems are interrelated in humans

5. Anatomy of Our Respiratory System Site of gas exchange

6. What happens when we breathe?

7. Problems with Respiration Infection – colds, flu, pneumonia Bronchitis Asthma cancer

8. Our blood actually takes two paths during circulation

9. Human Heart circulation Pathway: Enters heart from superior and inferior vena cavae Right atrium Right ventricle Pulmonary arteries To the Lungs 4. Pulmonary veins 5. Left atrium 6. Left Ventricle 7. Aorta To the rest of the body

12. These are the arteries involved in heart attacks

13. Components of Blood

14. Blood Vessels

15. Problems of the Circulatory System Heart attack Angina High blood pressure (hypertension) Palpitations

16. The End