How your heart works

Where did the note say they took Mommy?

• To Grandma's house
• Their Hidden Base

• To the Heart

• The Final Chamber

What are they following to the heart?

• A vein

• An artery

• a trail

• They are not going to the heart.

How does oxygen get to your blood

• The lungs

• The ear

• The toes

• I don't need oxygen

The heart is the size of a (what?)

How does the oxygen rich blood leave the heart?

• the aorta.

• the right atrium.

• the vena cava.

• pulmonary artery.