1. Unit 4- Cardiovascular (Circulatory) System

2. Bell Ringer Classroom Rules Write Down Vocabulary:
Atrium: Upper chamber of the heart that receives blood from the rest of the body
Ventricle: Lower chamber of the heart that pumps blood out of the heart to the rest of the body
Pulmonary: Refers to the lungs
Systemic: Spread throughout the entire body
Viscosity: Refers to how fluid a liquid is
Blood with high viscosity = difficult to push through vessels

3. Homework Due : Evens: 01/06 Odds: 01/07
Answer the following questions:
Is exercise important for the heart? Why?
What is carried in the blood?
What is homeostasis?
How does the circulatory system work with other systems to maintain homeostasis?
What are some factors that affect blood flow?(Research, name and describe at least 3 factors)

4. WHAT ARE WE LEARNING TODAY?
OBJECTIVE
Identify and investigate the general functions of the circulatory system.
Describe the structure of the heart and explain how it pumps blood through the body.

5. What is the essential question?
The circulatory system is divided into two separate pathways: pulmonary circulation and systemic circulation. How do they work together and separately to move blood throughout the body?

6. HOMEOSTASIS What do you think homeostasis means?
“The circulatory system maintains homeostasis”
Homeostasis – Equilibrium

7. Input Notes
Today we will be writing down what is in RED

8. What are the Functions of the Circulatory System?
Transports O2 (oxygen), CO2 (carbon dioxide), nutrients, etc. to and from the cells of the body.
Helps maintain a constant body temp. & homeostasis.
Carries cells that help protect the body from disease.

9. What is the Heart?
The heart is a muscular organ that pumps blood throughout the body.
Show actual heart

10. How does your blood circulate through the Body?
Blood Circulation:
The heart functions as two separate pumps.
Systemic circulation: BODY receives oxygen-rich blood pumped by the LEFT side of the heart
Pulmonary circulation: LUNGS receive oxygen-depleted blood pumped by the RIGHT side of the heart

11. Following a blood droplet through the body

12. 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

13. 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

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

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

16. 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.

17. 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

18. 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.

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

20. What is the Heartbeat?
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.
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?

21. Go With The Flow Procedures:
1. Follow teacher directions.
2. Begin the activity in a standing position at a station along the route taped to the floor.
3. Using the color circle representing the type of blood for your position, walk along your route and describe to the class what is happening at each stop.
4. Explain what route (blood vessel) must be followed to reach the next stop.

22. WE DO: “Go With The Flow” Part I RA RV LA LV CO2 O2 Pulmonary Vein
Artery RA RV LA LV
Vena
Cava
Aorta
WE DO:
“Go With The Flow”
Part I

23. Flow Chart “Go With The Flow” Part 2
Instructions: Using the four basic flowchart symbols, chart the blood’s path through the heart and throughout the body. Start in the right atrium where the blood enters the heart and end with the vena cava veins returning blood to the heart – one complete cardiac cycle!

24. Independent Practice 15 min
Let students use power notes and work in groups at tables for about 5 minutes to find the proper order.
Below are the steps involved in the pumping action of the heart, but they are not in correct sequence. Put them in order, numbering them from 1 to 9.
__8__ Blood will then move through the ARTERIES, then through CAPILLARIES, and then return through the VEINS.
__3__ The RIGHT VENTRICLE then pumps blood through the PULMONARY ARTERY into the lungs.
__2__ The RIGHT ATRIUM contracts and pumps the blood through the tricuspid valve and into the RIGHT VENTRICLE.
__7__ The left side of the heart contracts the strongest to send blood out the LEFT VENTRICLE and through the AORTA on its way to all parts of the body.
_5___ Oxygenated blood then flows through the PULMONARY VEIN and into the LEFT ATRIUM.
__9__ Deoxygenated blood (blood without oxygen) will then return to the heart and the cycle repeats
__4__ In the lungs, tiny blood vessels called CAPILLARIES absorb carbon dioxide from the blood and replace it with oxygen.
__6__ Oxygenated blood then pumps through the mitral valve and into the LEFT VENTRICLE.
__1_ Blood that has circulated through the body, which has lost its oxygen and collected carbon dioxide, enters through the VENA CAVA into the RIGHT ATRIUM of the heart.

25. Exit Ticket Finish before the bell rings!
__c__ right atrium a. large vessels that take blood away from the heart to the body
__h__ left ventricle b. carry deoxygenated blood to the lungs from the heart
__f__ left atrium c. contracts and pumps deoxygenated blood into right ventricle
_b___ right ventricle d. large vessels that bring deoxygenated blood to the heart
___g_ pulmonary veins e. smallest of blood vessels where substance exchange happens
_d___ veins f. contracts and pumps oxygenated blood into left ventricle
__a__ arteries g. contracts and pumps oxygenated blood to the body
__e__ capillaries h. bring oxygenated blood from the lungs to the heart
__i__ pulmonary arteries i. contracts and pumps deoxygenated blood to the lungs