2. Regents Biology 2006-2007 Circulatory System Blood Vessels

3. Regents Biology Blood vessels __________ arterioles __________ venules __________ artery arteriolesvenules veins

4. Regents Biology Arteries: Built for their job  ______________________  _______________________  provide strength for high pressure pumping of blood  elastic & stretchable  maintains blood pressure even when heart relaxes

5. Regents Biology Major arteries pulmonary artery pulmonary artery = to lungs aorta carotid = to head to brain & left arm to right arm coronary arteries to body

6. Regents Biology Coronary artery bypass bypass surgery

7. Regents Biology Veins: Built for their job  _______________________  ______________________  blood travels back to heart at low speed & pressure  why low pressure?  far from heart  blood flows because muscles contract when we move  squeeze blood through veins  valves in large veins  in larger veins one-way valves allow blood to flow only toward heart Open valve Blood flows toward heart Closed valve

8. Regents Biology Major Veins pulmonary vein = from lung superior vena cava = from upper body pulmonary vein = from lung inferior vena cava = from lower body

9. Regents Biology Structure-function relationship  ____________________  __________________  __________________ __________________ __________________ __________________  __________________ __________________ body cell O2O2 food waste CO 2

10. Regents Biology Circulation of Blood  2 part system  Circulation to lungs  ____________________  ____________________ ____________________  Circulation to body  ____________________ ____________________ heart lungs body Circulation to lungs Circulation to body

11. Regents Biology Vertebrate circulatory system heart lungs body  2 part system artery to body artery to lungs vein from lungs to heart vein from body to heart

12. Regents Biology Stops along the way…  Lungs  ______________________ ______________________  Small Intestines  ______________________ ______________________  Large Intestines  ______________________ ______________________  Liver  ______________________ ______________________

13. Regents Biology More stops along the way…  Kidneys  _____________________ _____________________  Bone  _____________________ _____________________  Spleen  _____________________ _____________________

14. Regents Biology waste food Circulatory System & Homeostasis  Homeostasis  keeping the internal environment of the body balanced  ___________________________________  Exercise  ___________________________  need more ATP  bring in more O 2 & food; remove more CO 2 & waste out  Disease  _____________________________________  need to work harder to bring in O 2 & food & remove wastes O2O2 ATP CO 2

15. Regents Biology 2006-2007 Have a heart? Ask Questions!!