The heart pumps blood throughout the body.

[Beware the Beast Man]

[Liberal Veteran]

1. Pump, pump, pump, pump, pump, pump, pump

Pump, pump, pump, pump, pump, pump, pump
Pump, pump, pump, pump, pump, pumps your blood

The right atrium's where the process begins
Where the CO2-blood enters the heart
Through the tricuspid valve to the right ventricle
To the pulmonary artery and lungs
Once inside the lungs it dumps its carbon dioxide
And picks up its oxygen supply
Then it's back to the heart through the pulmonary vein
Through the atrium and left ventricle

Pump, pump, pump, pump, pump, pump, pump
Pump, pump, pump, pump, pump, pump, pump
Pump, pump, pump, pump, pump, pumps your blood

Pump, pump, pump, pump, pump, pump, pump
Pump, pump, pump, pump, pump, pump, pump
Pump, pump, pump, pump, pump, pumps your blood

The aortic valve's where the blood leaves the heart
And it's channeled to the rest of the bod
The arteries, arterioles, and capillaries too
Bring the oxygenated blood to the cells
The tissues and the cells trade off waste and CO2
Which is carried through the venules and the veins
To the larger vena cava to the atrium and lungs
And we're back to where we started in the heart

Pump, pump, pump, pump, pump, pump, pump
Pump, pump, pump, pump, pump, pump, pump
Pump, pump, pump, pump, pump, pumps your blood

Pump, pump, pump, pump, pump, pump, pump
Pump, pump, pump, pump, pump, pump, pump
Pump, pump, pump, pump, pump, pumps your blood

[Sporadicus]

2. Careful!

Sounds suspiciously like a bodily function to me.

[Beware the Beast Man]

3. Bingo.

:D

[trof]

4. locking