Heart grade 4

Your heart is

as big as our

closed fist.

• TRUE

• FALSE

It is located just

IN FRONT of the

breastbone,

between the lungs.

• TRUE

• FALSE

Heart

is made up of

cardiac muscles

• TRUE

• FALSE

Lungs is the

center of your

circulatory

system

• TRUE

• FALSE

What do you call the sac that enclosed and protects the heart?

• veins

• pericardium

pump and force

blood to circulate

around your body.

• chambers

• atrium

• ventricle

Your heart pumps

blood about 70 times a

minute or 100,000

times a day without

getting tired.

• FALSE

• TRUE

receives blood returning

to the heart from the

body while ventricles

pump blood from the

heart to the body.

• chamber

• atria

• ventricle

The main difference between

right and left atria is that right

atrium receives deoxygenated

blood from the body whereas left

atrium receives oxygenated blood

from the lungs.

• TRUE

• FALSE

muscular chamber that

pumps blood out of the

heart and into the

circulatory system.

• VENTRICLES

• AORTA