2. Chapter 37 Circulatory and Respiratory Systems How do we get the reactants of cellular respiration, nutrients and oxygen, into our cells?

3. Review What kinds of nutrients do your cells use for energy?

4. After food is absorbed through intestines? Where does it go?

5. Do all nutrients go to the same place?

6. What happens to the nutrients? After we digest food: – Proteins, carbohydrates, nucleic acids  absorbed directly into the blood – Lipids are non-polar  absorbed into lymphatic system  then absorbed into blood – Nutrients enter the bloodstream by diffusion from areas of HIGH to LOW concentration

7. A close up your small intestine

8. Circulation of nutrients and other materials Where do nutrients go now? What else needs to circulate through the body?

9. Overview of the Circulatory System How does structure meet function? StructuresFunctionsStructure meets function Blood Blood Vessels Heart Movement of food, gasses, blood cells, waste, hormones, enzymes, and fluid through the body Details on following slides

10. What is the structure of blood?

11. Can you match structures to the various functions of blood? _Transports oxygen and CO2 _Transports nutrients, and waste _Immune response _Clots blood a. Plasma b. RBC c. Platelets d. WBC

12. Hemoglobin is a molecule found in Red Blood Cells A protein that transports four oxygen atoms Review: What level of structure does hemoglobin show?

13. How do the structure of blood vessels help them move blood? System of vessels Arteries – thick muscular walls Veins – thinner wall, contain valves Capillaries – 1-2 cells thin

14. What are the functions of vessels? System of vessels Arteries (RED) - move blood away from the heart Capillaries (PURPLE) - exchange of gasses and nutrients between cells and blood Veins(BLUE) - return blood to the heart

15. Connect vessel names to organs Heart – Coronary, Aorta, Vena Cava Lungs – Pumonary Head – Carotid, Jugular Liver – Hepatic Kidney – Renal Digestive – Mesenteric Legs – Femoral, Iliac Arms – Brachial, Cephalic

16. What are the structures of the heart?

17. Chambers of the heart

18. How does blood flow through the heart? Two Pathways Pulmonary Circuit –To the lungs to pick up oxygen Systemic Circuit- To the body to drop off oxygen Heart Animation

19. Analogy: Can you connect parts of a road map to the circulatory system? Interstates = Major Stops = Main Streets = Local Roads = Your House =

20. Activity: Google Mapping the Circulatory System Make your map - On a large piece of paper, you will make a map connecting major organs (buildings) with the correct vessels (streets). Be sure to LABEL your structures. Come and get a “direction request” 1.Highlight the route along you map that one would take to get from Point A to Point B (Be sure that your route obeys the One Way traffic flow) 2.Write out step by step directions (in words)

22. The Big Picture: Circulatory system connects the organs of exchange with the body cells * note names of major vessels

23. Practice on the Web Measuring heart rate: http://www.topendsports.com/testing/heart- rate.htm http://www.topendsports.com/testing/heart- rate.htm