7. Blood And The Circulation

Question 1

What is blood?

What triggers blood clotting?

Answer 1

• It’s a tissue
• It’s made of a liquid called PLASMA

• Platelets trigger blood clotting

Question 2

What is red blood cells?

Answer 2

Very small things which allow oxygen

Question 3

What is white blood cells?

Answer 3

They help protect the body against infections

Question 4

What are arteries?

Answer 4

Thick walls made from muscle

• They take blood from your heart to your organs.

Question 5

What are veins?

Answer 5

Thinner walls and valves to prevent back flow

Takes blood from your organs to your heart

Question 6

What are capillaries?

Answer 6

Narrow, thin walled blood vessels

Question 7

You must know for the heart:

Answer 7

• The left and right ATRIA received blood from veins.

* The left and right VENTRICLES pump the blood out into the arteries.