Circulatory System- Blood Vessels

What is the purpose of the circulatory system?

• To change food into nutrients

• To transport blood carrying nutrients throughout the body

• To eliminate waste in the body

• To help the body move

What are the three main components of the circulatory system?

• brain, lungs, heart

• blood, brain, lungs

• blood vessels, stomach, heart

• heart, blood, blood vessels

Which blood vessel carries blood FROM the tissues INto the heart?

• veins

• arteries

• capillaries

• red blood cells

Veins carry ______ to the heart:

• deoxygenated blood (blood without oxygen)

• oxygenated blood (blood with oxygen)

Which type of blood vessel has thinner walls?

• artery

• vein

These blood vessels move the blood AWAY from the heart to other parts of the body:

• veins

• arteries

• capillaries

• white blood cells

The heart pumps blood with a lot of pressure. For this reason the ______ walls are thick, resistant, and flexible.

• artery

• capillary

• vein

• cell

The arteries carry ______ AWAY from the heart to the other parts of the body.

• deoxygenated blood (without oxygen)

• oxygenated blood (with oxygen)

What type of blood vessel is the smallest and has the thinnest walls?

• capillaries

• arteries

• platelets

• veins

In what blood vessel are substances (like oxygen) transported directly into organ tissues?

• arteries

• capillaries

• red blood cells

• veins