1. Circulatory System HW on your desk! Catalyst  What is the function of the nervous system?  Order the following terms from smallest to largest: organ, cell, human, body system.  What is homeostasis?  Give one example of your body trying to put itself back into homeostasis. Include which systems work on this! Write in complete sentences! Don’t talk during the Catalyst!

2. Have you ever wondered…  How does the heart pump blood throughout our body?  Why are heart attacks deadly?

3. Objectives By the end of today, all SWBAT…  Describe the structure and function of the circulatory system  Explain how the circulatory system maintains homeostasis in the human body

4. Agenda  Catalyst Review  Anatomy  Back to Homeostasis  Quick questions  YOU’RE THE DOCTOR  Exit Question

5. The anatomy of the circulatory system  Key Point #1: The circulatory system consists of the heart, blood vessels, and blood  Heart: pumps blood through four chambers

6. The anatomy of the circulatory system  Key Point #1: The circulatory system consists of the heart, blood vessels, and blood.  Blood Vessels: carry blood Arteries: carries oxygenated blood from heart to organs Capillaries: O 2 diffuses into organs, CO 2 diffuses out Veins: carries deoxygenated blood from organs to heart

7. The anatomy of the circulatory system  Key Point #1: The circulatory system consists of the heart, blood vessels, and blood.  Blood Vessels: carry blood Pulmonary artery: Blood from heart  lungs Pulmonary vein: Oxygenated blood from lungs  heart

8. Blood Flow Aorta Big arteries Capillaries Vena Cava Small arteries Small veins Big veins

9. The anatomy of the circulatory system  Key Point #1: The circulatory system consists of the heart, blood vessels, and blood.  Blood: fluids and cells that carry nutrients and gasses Plasma: fluid; carries nutrients and waste Red blood cells (RBCs): carry O 2 and CO 2 White blood cells (WBCs): immune system cells Platelets: clot blood

10. What is a normal resting heart rate?  Ms. Stroh 120 bpm   Average adult70-100 bpm  In shape60-70 bpm  Good athlete50-60 bpm  Excellent athlete<50 bpm  Mr. LY45 bpm  World-class<40 bpm  Lance Armstrong32 bpm

11. The function of the circulatory system  Key Point #2: The circulatory system maintains homeostasis by distributing nutrients to cells and taking waste away from cells  Blood plasma: nutrients to cells, waste out of cells  RBCs: O 2 to cells, blood plasma: carries CO 2 out of cells

12. All doctors have to practice… Whiteboard time!!!

13. Whiteboard Practice (GP)  (It’s in your notes…)  Draw and label the four chambers of the heart, the aorta, and the vena cava

14.  Which chamber of the heart pumps blood to the lungs?  Which chamber of the heart pumps blood to the body? Whiteboard Practice (GP)

15.  Which chamber of the heart collects oxygenated blood?  Which chamber of the heart collects deoxygenated blood? Whiteboard Practice (GP)

16.  Which blood vessel brings blood to the lungs?  Why do it do this?  Which blood vessel brings blood from the lungs to the heart?  Why does it do this? Whiteboard Practice (GP)

17.  Identify THREE of the four parts of the blood, and describe what they each do. Whiteboard Practice (GP)

18.  In what two ways does the circulatory system maintain homeostasis? (Think: what bad stuff would happen if it worked incorrectly?) Whiteboard Practice (GP)

19.  James is a carrier for sickle cell, which decreases the amount of oxygen RBCs can carry.  If James had sickle cell, how would this disorder stop his circulatory system from maintaining homeostasis? (Think: why will he die?  ) Whiteboard Practice (GP)

20.  A crazy student stabbed Ms. S in the right ventricle for giving out too much homework last night!  How will this injury stop her circulatory system from maintaining homeostasis? (Think: why will she die?) Whiteboard Practice (GP)

21.  Jasmine and her boo have a child (after college and when they are financially stable). Unfortunately, it is born with a rare birth defect that causes it to have too little blood plasma.   How will this injury stop the child’s circulatory system from maintaining homeostasis? (Think: why will it die?) Whiteboard Practice (GP)

22. THERE’S A PATIENT IN THE ER!!! Can you handle it on your own?

23. Key Point Wrap-Up  Key Point #1: The circulatory system consists of the heart, blood vessels, and blood  What does each part do?  Key Point #2: The circulatory system maintains homeostasis in two ways  Blood plasma: nutrients to cells, waste out of cells  RBCs: O 2 to cells, Blood plasma: CO 2 out of cells

24. Exit Questions  Describe the function of RBCs.  Contrast veins and arteries.  2 differences – DO NOT WRITE “THE COLOR”!  Someone shot Ms. S in her left ventricle!!!  Describe the function of the left ventricle.  How will this injury stop her circulatory system from maintaining homeostasis? (Think: why will she die?) Write in complete sentences! Don’t talk during the Exit Question!