Left Ventricle.
The left ventricle is the heart chamber that most directly pumps blood to the vessel network. It pumps oxygenated blood out into the body through the aorta, which then branches out into smaller arteries to deliver blood to the rest of the body.
Left ventricle is the strongest and most important chamber of the heart. It receives oxygenated blood from left atrium, and pumps it into the aorta. Thus supplying the body with oxygenated blood. When this is said, all of the chambers are necessary for proper function of the heart.
The left side, because it pumps to the body
The left ventricle is the thickest and most powerful chamber of the heart. It has to pump blood further (to the body) than the right ventricle (to the lungs).
Atrium
You might be looking for the atria and ventricles, but these are just the chambers inside the heart. I have never heard of "heart pumps" before.
left ventricle left side
the heart and the liver because the heart pumps blood and the liver protects it
depends on if your right/left handed.
The heart is a muscle that pumps blood and causes the blood to circulate throughout the body. It is the most hardworking muscle in the human body.
Blood pressure is the measure of the pressure created as the heart pumps blood through the blood vessels. This is one of the most important vital signs.
It pumps blood to and from your lungs to become oxygenated, and then pumps that oxygenated blood to your brain and the rest of your body for your cells to receive oxygen. Apparently it isn't pumping as much blood to your brain as it does most people, though.