circulatory system

Front

What is the main organ of the circulatory system?

Back

heart

Front

Arteries carry oxygen rich blood away from the heart.

Back

True

Front

Do veins carry oxygen poor blood back to the heart?

Back

True

Front

The job of the heart is to...

Back

pump blood around the body.

Front

The heart is about the size and shape of your . . .

Back

fist

Front

What are the smallest blood vessels?

Back

Capillaries

Front

The circulatory system works with the ___________ system to provide our body with oxygen.

Back

respiratory

Front

What is the main function of the circulatory system?

Back

Transport blood, nutrients, and gases throughout the body.

Front

The FREQUENCY of heart contractions is...

Back

heart rate

Front

The heart has ___ chambers.

Back

4