Circulatory system 1

What is the main organ of the circulatory system?

• small intestine

• bone

• lungs

• heart

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.

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

• head

• fist

• hand

• foot

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

• respiratory
• digestive
• muscular
• skeletal

Arteries carry oxygen rich blood away from the heart.

• True

• False

Veins carry oxygen poor blood back to the heart.

• False

• True

Identify

• Left atrium

• Right atrium

• Left ventricle

• Right ventricle

Identify

• Pulmonary veins

• Pulmonary artery

• Aorta

• Vena cava

Identify

• Left atrium

• Right atrium

• Left ventricle

• Right ventricle

The heart has ___ chambers.

• 1
• 2
• 3
• 4