1. Circulatory System
Day 2

2. Bellringer What are the 4 chambers of the heart?
what does each chamber do?
Explain how blood flows through the body start at the right atrium
(Hint: Follow the arrows on the floor)

3. Bellringer: -Get out your notes to be checked
-Pick up the 2 worksheets from the front of the class
-Work on the bellringer quietly use your notes to help answer the questions
-Staple or glue the heart model into your journals

4. What is the Heartbeat?
When you are sitting still, your heart pumps about 5 L of blood each time.
When you are active, your heart pumps up to 35 L.
Why do you think there is an increase?
The movement of blood throughout your body is called circulation.
Aerobic exercise requires more oxygen throughout the body, therefore you use more blood and pump it more.

5. Heart Anatomy
Each half of the heart has an upper chamber (atrium) and lower chamber (ventricle).
The right atrium receives deoxygenated blood from the body.
The right ventricle pumps blood to the lungs to pick up O2.
The left atrium receives oxygenated blood from the lungs.
The left ventricle pumps oxygenated blood to the body.
Right atrium receives Deoxygenated blood from the body
4 pumps in one

6. Heart Anatomy Arteries carry oxygenated blood AWAY from heart.
Pulmonary artery carries deoxygenated blood to LUNGS.
Veins bring deoxygenated blood back to the heart.
Pulmonary Vein carries oxygenated blood from lungs to left atrium.
Right atrium recieves Deoxygenated blood from the body
4 pumps in one

7. Teacher point to parts of the heart and have students call them out and define their roles in the circulatory system.

8. What are the Blood Vessels?
As blood flows through the circulatory system, it moves through three types of blood vessels:
Arteries
Capillaries
Veins

9. What are the arteries? Large & tough
Thick walls that help them withstand the powerful pressure produced when the heart contracts.
Carry oxygenated blood AWAY
from the heart to the tissues of
the body
Pulmonary artery = deoxygenated
The aorta is the first of a series of arteries that carry the blood to the rest of the body.
The largest arteries are about as thick as a thumb.

10. What are the capillaries vessels?
Walls are only one cell thick.
Smallest of the blood vessels.
Most are so narrow that blood cells must pass through them in single file.
Bring O2 & nutrients
to tissues
Absorb CO2 & other waste from tissues

11. What are the veins? Return deoxygenated blood to heart.
Pulmonary vein = oxygenated
As with arteries, the thin walls of veins contain connective tissue and smooth muscle.
Large veins contain valves that keep blood moving toward the heart.

12. Path of blood vessels through the body:
Veins
Arteries
Heart
Body
(Capillaries)

13. Learning Target
Identify factors that affect blood flow and relate them to how they affect the cardiovascular system as a whole.

14. Systemic Circulation
carries oxygenated blood away from the heart to the body, and returns deoxygenated blood back to the heart.

15. Pulmonary Circulation
-carries deoxygenated blood away from the heart, to the lungs, and returns oxygenated (oxygen- rich) blood back to the heart.

17. Blood Clot
Blood clots are gel-like
clumps of blood
that cause a
blockage

19. Sickle Cell Anemia
Sickle cell anemia is a disease in which your body produces abnormally shaped red blood cells. The cells are
Shaped like a
crescent
or sickle

20. Notebook output
The rate in which blood flows through the human body changes in response to many factors. Based on what we learned the past two days write 5 sentences explaining some of those factors. Use words like VISCOSITY, BLOOD FLOW, DISEASE, SICKLE CELL ANEMIA, ATHEROSCLEROSIS, BLOOD CLOT, PLAQUES.

21. Group Work
Get in groups of 3 to 4 depending on the class size and make a skit of the disease on your paper.

22. Independent Practice
Complete the worksheet on the back of the group work.
If this is not finished in class, you can take it for homework.

23. Exit Ticket On a sheet of paper define: Atherosclerosis Blood clot
Sickle cell anemia
Pulmonary circulation
Systemic circulation