CIRCULATORY SYSTEMIsabella, Sofia, Jayne

PSHE 7

Mrs. McDaniel

THE CIRCULATORY SYSTEM:

The Circulatory System has many

functions:•It brings oxygen to different parts of the

body•It uses antibodies to fight illness and

infections•It controls your body temperature

•Removes toxic product from your system

•Transports nutrients to different areas of

your body•It clots blood at an injury to prevent other

germs from entering your system

CIR

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The Circulatory System has two

main circuits: The Pulmonary

Circuit, which transports blood

from the heart to your back and lungs, and the

Systemic Circuit, which carries

blood to the rest of the body, and then back to the

heart. The Pulmonary

Circuit is located on the right side of the heart, and

the Systemic Circuit is located

on the left vain of the heart.

THERE ARE TWO DIFFERENT KINDS OF BLOOD CELLS:

White Blood cells,And Red Blood cells!

WHAT’S THE DIFFERENCE?

White blood cells help fight infections and disease, while red blood cells carry oxygen to through the body.

ARTERIES, VEINS, AND CAPILLARIES

Your arteries are what carry blood away from your heart. They have very thick and flexible walls, because when your heart beet accelerates, more and more blood flows through the arteries, gaining more and more pressure.Capillaries are very thin (one cell wide). They are what feed your muscles and cells, and their small size allows them to reach every part of your body.Veins lead off of the capillaries. They are what used blood back to your heart to be recycled into new blood.

This is what the capillaries, arteries, and veins look like:

The largest of the three are the arteries.The system in the middle are the capillaries, and the smallest of the three systems are the veins.

PLATELETS:Platelets are smaller parts of blood cells. They are what help clot your blood when it is exposed to oxygen, forming a thick layer of tough skin, known as a scab.

Every part of the circulatory system is essential for the function of the body. Without white blood cells, you could not fight off infections and disease. Without red blood cells, your muscles would not be able to get blood. Without veins, arteries, and capillaries, the blood would not be able to reach your muscles and return to the heart, and without platelets, when you are hurt or injured, you would not be able to stop bleeding. Your body depends on the circulatory system, so it is important you maintain a healthy level of iron and oxygen in your blood.

THE END!