Arteries Veins Capillaries

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

OXYGENATED blood returns from your lungs and enters the heart. The heart then pumps this blood to the ________

• capillaries

• veins

• brain

• arteries

The arteries carry the blood to a different blood vessel called ______. Here substances (like oxygen) are released into organ tissues.

• capillaries

• veins

• artery ends

• heart

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

Veins carry ______ to the heart:

• deoxygenated blood (blood without oxygen)

• oxygenated blood (blood with oxygen)

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

DEOXYGENATED blood travels through the veins and into the heart. The heart pumps this blood to the _______

• brain

• arteries

• lungs

• capillaries

Arteries carry blood _____ from the heart.