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Chapter 35

Revise The Circulatory System

QuestionAnswer
List the four components of blood. Component means something that makes up the blood Red blood cells, white blood cells, platelets, plasma.
What is the function of Red blood cells? To transport oxygen around the body.
What is the function of each of White blood cells? To fight infection.
What is the function of each of Platelets? To clot the blood and stop bleeding.
What is the function of each of Plasma? To transport the other parts of blood, nutrients and waste around the body.
What is the function of the heart? To pump blood around the body.
How many chambers are in the heart? 4.
Why does the left side of the heart have a thicker wall than the right side? That is the side of the heart that pumps blood to the entire body.
What type of blood vessel carries blood towards the heart? Veins.
What type of blood vessel carries blood away from the heart? Arteries.
What type of blood vessel carries deoxygenated blood? Veins.
What type of blood vessel carries oxygenated blood? Arteries.
Why do veins have valves? To stop the back flow of blood.
What is your pulse? The feeling of your heart beating.
What is the average pulse rate for an adult? 70 beats per minute.
What effect does exercise on the pulse rate? Your pulse increases.
Why does exercise have this effect? Your body needs more oxygen and the heart has to pump faster to keep up.
Why does your breathing rate increase when your heart rate increases? Oxygen is taken in through your lungs and you have to breath faster to get more oxygen.
Created by: SC Dave
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