blood and circulation

What is the main organ of the circulatory system?

• small intestine

• bone

• lungs

• heart

The heart is an organ that pumps ________ to the whole body.

• nutrients

• oxygen

• carbon dioxide

• blood

Which of the following is the importance blood circulatory system?

• Transport oxygen, nutrients and water to the whole body.

• Transport virus.

• Make us sick and have stomach ache.

• Transport waste products.

The job of the heart is to . . .

• pump blood around the body.

• send food to the small intestines.

• break down food.

• give energy to the body.

Tags

NGSS.MS-LS1-3

This delivers oxygen to your body cells.

• white blood cell

• red blood cell

• respiratory system

• lungs

These are in your blood and fight diseases and infections.

• white blood cells

• red blood cells

• circulatory system

• blood

These blood vessels take oxygen-rich blood from the heart to the body cells.

• heart

• arteries

• veins

• capillaries

These blood vessels carry oxygen-poor blood to the lungs.

• heart

• capillaries

• veins

• arteries

These microscopic blood vessels are the smallest of all of our blood vessels and send blood to every part of the body.

• heart

• arteries

• veins

• capillaries

______________ are the second largest blood vessel. 

• Arteries
• Veins
• Capillaries