1. By: Tayla Creed, Monique Jackson and Simone Hoaten
Circulatory System
By: Tayla Creed, Monique Jackson and Simone Hoaten

2. The Circulatory System

3. To carry digested food from the small intestine to all areas in the body which need it.
To carry oxygen from the lungs to the rest of the body.
To aid the disposal of all waste from the body.
To distribute heat.
To fight disease by using white blood cells to fight off infection

4. Main organs of the system
Heart
Veins
Arteries
Lungs

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The heart

6. Functions of the heart
The hearts main function is to pump the blood within the body throughout the places in the body which need it.
The heart constantly purifies, receives and distributes blood.
The heart is separated into four chambers, each of them perform their own function independently, therefore the heart is able to receive and distribute blood at the same time.
The four chambers are:
The left atrium
The right atrium
The left ventricle
The right ventricle.

7. Veins and arteries

8. DIFFERENCES BETWEEN ARTERIES AND VEINS
Carry blood away from the heart
Have thick muscular walls
Have a pulse
Deep under skin
Have no valves
Arteries branch at their ends, into tiny arterioles those then join capillaries
Carry blood to the heart
Have thin walls
Do not have a pulse
Near surface of the skin
Have valves to stop backflow of blood
Vein branch at the beginning, into tin venules which join capillaries

9. Main function of Lungs There are 2 lungs in the human body
They supply oxygen to the heart.
The intake of air while breathing is carried out by the lungs, and this oxygen is then added into the blood and then transported to the heart.

10. Two illnesses or diseases
That can happen in the
Circulatory system:
Heart Attack
Hole in the Heart

11. Heart attack

12. Heart attack

13. Heart Attack

14. Heart Attack
Coronary Heart Disease is a condition in which a waxy substance called plaque builds up inside the coronary arteries. These arteries supply oxygen-rich blood to your heart
Plaque builds up along the course of an artery and narrow the channel through which blood flows. This is called Atherosclerosis.
If the artery becomes too narrow, it cannot supply enough blood to the heart muscle when it becomes stressed.
If the clot becomes large enough, it can completely block blood flow through a coronary artery.
If the blockage isn't treated quickly, the portion of heart muscle fed by the artery begins to die.
The heart muscle will ache if it doesn't get blood supply. This ache or pain is called angina.
If the plaque ruptures, a small blood clot can form within the blood vessel, acting like a dam and acutely blocking the blood flow beyond the clot.
When that part of the heart loses its blood supply completely, the muscle dies.
Healthy heart tissue is replaced with scar tissue.
This is called a heart attack

15. Hole in the heart

16. Hole in heart

17. What is a hole in the heart?
Holes in the heart are problems with the heart's structure and this happens at birth.
These defects change the flow of blood through the heart.
The heart has two sides, separated by an inner wall called the septum.

18. About Hole in heart Right side of heart:
Receives oxygen-poor blood from the body
Left side of heart:
Receives oxygen- Rich blood from the lungs and pumps it into the body
The septum prevents mixing of blood between the two sides of the heart. However, some babies are born with holes in the upper or lower septum.

19. Websites we got our Information from: