KS3 Science Quiz - Circulatory System 02 (Questions)

This KS3 Science quiz challenges you on the circulatory system. The circulatory system transports blood around the body through blood vessels. The earliest known writings on the circulatory system are found in the Ebers Papyrus (16th century BCE), an ancient Egyptian medical papyrus containing over 700 prescriptions and remedies. In 1628, the English physician William Harvey wrote a medical book. In it, he summarised how he thought that the blood travelled round the body in a circuit. Before Harvey, people thought that it was pumped backwards and forwards through the blood vessels or that it didn't flow at all. Neither Harvey, nor those who came before him, knew of the existence of the capillaries. Harvey thought that the blood travelled through 'pores' in the flesh to get from artery to vein.

Even at the time of Harvey, they didn't really understand the many functions of blood. They knew it was important but not why. Microscopes did not come into existence until about 50 years later so they had no way of seeing the cells in blood. To them, it was simply a red sticky liquid.

1. Which is the correct statement about plasma?
[ ] A straw coloured liquid portion of blood
[ ] It contains haemoglobin
[ ] It fights against disease
[ ] It helps the blood to clot
2. Which is the correct statement about red blood cells?
[ ] They can be produced by a type of blood cell
[ ] They fight against disease
[ ] They have no nucleus
[ ] They help the blood to clot
3. Which is the correct statement about white blood cells?
[ ] They can be produced by a type of blood cell
[ ] They contain haemoglobin
[ ] They help the blood to clot
[ ] They protect the body against disease
4. Which is the correct statement about platelets?
[ ] They are produced by the kidneys
[ ] They contain haemoglobin
[ ] They fight against disease
[ ] They help the blood to clot
5. Which is the correct statement about capillaries?
[ ] They are very narrow blood vessels
[ ] They contain haemoglobin
[ ] They contain valves
[ ] They have thick muscle
6. Which is the correct statement about antibodies?
[ ] They are produced by some capillaries
[ ] They are produced by some plasma
[ ] They are produced by some red blood cells
[ ] They are produced by some white blood cells
7. One of the functions of white blood cells is .......
[ ] to carry carbon dioxide
[ ] to carry oxygen
[ ] to engulf microbes
[ ] to help the blood to clot
8. One of the functions of plasma is .......
[ ] to carry carbon dioxide from the organs to the lungs
[ ] to carry oxygen from the lungs to the organs
[ ] to form blood clots
[ ] to protect the body
9. The function of red blood cells is .......
[ ] to carry carbon dioxide from the organs to the lungs
[ ] to carry oxygen from the lungs to the organs
[ ] to form blood clots
[ ] to protect the body
10. Which of the following is NOT a function of blood?
[ ] It forms part of the body's defence mechanism
[ ] It transports food to cells
[ ] It transports oxygen to cells
[ ] It transports waste to cells
KS3 Science Quiz - Circulatory System 02 (Answers)
1. Which is the correct statement about plasma?
[x] A straw coloured liquid portion of blood
[ ] It contains haemoglobin
[ ] It fights against disease
[ ] It helps the blood to clot
It is the liquid part of blood
2. Which is the correct statement about red blood cells?
[ ] They can be produced by a type of blood cell
[ ] They fight against disease
[x] They have no nucleus
[ ] They help the blood to clot
They have no nucleus so that they can contain lots of haemoglobin
3. Which is the correct statement about white blood cells?
[ ] They can be produced by a type of blood cell
[ ] They contain haemoglobin
[ ] They help the blood to clot
[x] They protect the body against disease
Some white blood cells digest microbes
4. Which is the correct statement about platelets?
[ ] They are produced by the kidneys
[ ] They contain haemoglobin
[ ] They fight against disease
[x] They help the blood to clot
They stick together, along with a protein called fibrinogen to form a clot which plugs the hole in the blood vessel
5. Which is the correct statement about capillaries?
[x] They are very narrow blood vessels
[ ] They contain haemoglobin
[ ] They contain valves
[ ] They have thick muscle
Their wall is only one cell thick
6. Which is the correct statement about antibodies?
[ ] They are produced by some capillaries
[ ] They are produced by some plasma
[ ] They are produced by some red blood cells
[x] They are produced by some white blood cells
They are part of our immune system
7. One of the functions of white blood cells is .......
[ ] to carry carbon dioxide
[ ] to carry oxygen
[x] to engulf microbes
[ ] to help the blood to clot
They also produce antibodies and neutralise toxins
8. One of the functions of plasma is .......
[x] to carry carbon dioxide from the organs to the lungs
[ ] to carry oxygen from the lungs to the organs
[ ] to form blood clots
[ ] to protect the body
Plasma also transports glucose and hormones
9. The function of red blood cells is .......
[ ] to carry carbon dioxide from the organs to the lungs
[x] to carry oxygen from the lungs to the organs
[ ] to form blood clots
[ ] to protect the body
Haemoglobin is the protein inside a red blood cell
10. Which of the following is NOT a function of blood?
[ ] It forms part of the body's defence mechanism
[ ] It transports food to cells
[ ] It transports oxygen to cells
[x] It transports waste to cells
It transports waste AWAY from cells