Heart Poem

heart cartoon
Thumping thumping,
Pumping squeeze!
Not 2 arms, 2 eyes, or knees…
eyes cartoon
Not your legs,
Nor other part,
I never rest,
‘Cause I’m your heart…
I pump away,
Every second!
Each whole day!
clock cartoon
Thumping, thumping
Blood I’m pumping,
Through your veins,
Never stopping,
Not one time,
Your heart’s the part,
That keeps you fine…
heart cartoon

Watch Mr. R.’s Human Heart Video

What is a Heart?

The heart is the organ which pumps blood throughout the circulatory system.
All vertebrates have a heart, as do many invertebrates. The human heart is made up of cardiac muscle, which must keep working throughout your lifetime.
The average human heart (based on a 78 year life span) beats about 3 billion times! But for all that work it does, the heart usually weighs less than a pound.

The human heart has four chambers, through which blood passes:
Deoxygenated blood enters the chamber called the right atrium.
The blood then moves to the next chamber called the right ventricle.
From the right ventricle the blood passes through the pulmonary arteries to the lungs where it receives oxygen.
From the lungs, blood returns to the heart’s left atrium and left ventricle.

Mr. R.'s World of Science