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1. How many liters of blood does the circulatory system of an average adult carry?
5 liters
2. What are the three primary components of blood?
Plasma, red blood cells, and white blood cells
3. What percentage of human blood is made up of plasma?
60%
3. What is plasma’s main role in the circulatory system?
Carry necessary chemicals and nutrients
4. Which substances does plasma transport to cells in the body?
Glucose, fats, and amino acids
5. What percentage of blood is made up of red and white blood cells combined?
40%
6. What is the primary function of red blood cells?
Carry oxygen in the blood
7. What is the primary function of white blood cells?
Defend the body against viruses and bacteria
8. What is the main function of the heart in the circulatory system?
To pump blood throughout the circulatory system
9. How many chambers does the heart have?
Four
10.What are the top chambers of the heart called?
Atria
11.What is the function of the right atrium?
To collect oxygen-poor blood returning to the heart
12. Where does the left atrium receive blood from?
The lungs
13.What happens when the atria contract?
Blood is pushed into the ventricles
14.Where does blood go after the right ventricle contracts?
To the lungs
15. Where does blood go after the left ventricle contracts?
To the rest of the body
