Challenge: What is the approximate size of our heart?
Our fist
Challenge: How many liters of blood does an adult have - 1 litre, 5 litres, 15 litres, or 10 litres?
5 litres
Challenge: How long does it take for the blood to leave the heart, circulate through the whole body and come back again to the heart?
60 seconds
What are the different kinds of blood vessels?
Arteries, veins, and capillaries
Which kind of blood vessel carries blood away from the heart?
Artery
Which kind of blood vessel carries blood to the heart?
Vein
Challenge: Which kind of blood vessel connects the arteries to the veins?
Capillaries
Challenge: How many chambers is the heart divided into?
4
What is the heart?
A muscle
What does the blood take to the body?
Oxygen and nutrients
What are the four main parts of the circulatory system?
Heart, Lungs, Blood, Blood Vessels
What happens in the lungs when we breathe in?
Oxygen moves into the blood from the air we breathe in.
Challenge: Does blood travel faster in the veins or in the arteries?
Blood travels faster in the arteries.
Challenge: Which blood cells carry oxygen around the body?
Red blood cells transport oxygen around the body.
Challenge: Another name for the circulatory system: The c_ _ d _ _ v_s_ _ l _ _ system.
The cardiovascular system.
