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What is a pulse?
The rhythm of your heart rate and blood moving through your body.
Name the three main parts of the circulatory system.
The heart, blood, and blood vessels.
What do veins do?
Veins take deoxygenated blood back to the heart.
What do arteries do?
Arteries take oxygenated blood to the organs and the rest of the body.
What is haemoglobin?
Haemoglobin gives blood its red colour.
What is the difference between oxygenated and deoxygenated blood?
Oxygenated blood has oxygen and is a brighter red, while deoxygenated blood has carbon dioxide andis a duller red.
What are the four main parts of blood?
Red blood cells, white blood cells, platelets, and plasma.
What is the function of red blood cells?
Red blood cells carry oxygen around the body, as well as return carbon dioxide back to the lungs.
What is plasma?
Plasma is the liquid part of the blood.
What is the main function of the circulatory system?
To move blood through the heart and around the body.
What happens to your heart rate when you exercise?
Your heart rate increases.
Which blood vessels carry oxygenated blood to the organs and the rest of the body?
Arteries
What is the main function of valves in the heart?
They only allow blood to flow in one direction.
Which part of the blood is responsible for clotting?
Platelets.
What happens to blood when it reaches the cells of the body?
It offloads oxygen and absorbs carbon dioxide.
What gives blood its red colour?
Haemoglobin.
