Circulation Quiz 1.3

Which of the following shows the types of blood vessels?

Which of the following best describes the heart and the circulatory system?

Your blood follows one pathway in your body.

There are about 98 000km of blood vessels in the body of a child!

THe capillaries are a network that joins the arteries and veins, allowing the blood to flow continuosly.

[blank_start]Veins[blank_end] carry blood back to the heart.The pressure of [blank_start]heartbeat[blank_end] is lost as the blood flows through the [blank_start]very narrow capillaries[blank_end], so they dont need [blank_start]thick muscular[blank_end] walls like the [blank_start]arteries[blank_end] do.

[blank_start]Cholesterol[blank_end] is a type of fat that is essential for health, but can block [blank_start]arteries[blank_end] if it builds up in them.If the arteries are blocked, then the blood won't reach the heart, which means no oxygen will reach the heart as well. lack of [blank_start]oxygen[blank_end] in the heart muscle will casue [blank_start]angina[blank_end]

Answer the following diagram:

Label the following diagram by dragging the answer and dropping it in the correct place.

Blood flowing along the [blank_start]vein[blank_end] towards the [blank_start]heart[blank_end] forces the valves against the [blank_start]vein wall[blank_end] and the blood can flow freely.The [blank_start]valves[blank_end] close preventing blood flow in the opposite direction.

The heart has four chambers

Your blood consist of red and white blood cells and platelets floating around in a liquid called____________.