blood
Actually lymph is also a liquid tissue and part of the immune system.
Because the arteries wouldn't be able to have blood flow through your body unlike arteries veins are through out your whole body so they can transport blood through your whole body, veins keep your blood circulating
food is absorbed into the small intestine and the transported around body in blood. heart pumps oxygenated blood and during this the lungs take in the oxygen out of the food.
BLOOD. that is the only liquid tissue you will ever find in the human body. --thoughtfulobserver
Blood its the only liquid organ
No , you cant live without a heart. The heart is reasonable for circulating the blood around the body. Blood carries the oxygen, which the body needs to survive. The only exception to this is someone had a artificial heart, it would be doing the same work as a human heart.
The valves in the heart act as one-way switches that allow blood to only flow one way. So every time the contracts, the blood flows out and into the lungs or the body, depending on which side the blood is circulating through.
Water is absorbed through the walls of your digestive tract and participates in most of the functions in your body. The blood stream is not the only way water moves through the body but is is one of the most rapid ways to get liquid where it is needed.
Not only the heart, but muscles in general are red because they are irrigated by the flowing blood in the organism.
The only arteries in the body that move deoxygenated blood away from the heart are the pulmonary arteries. Arteries are blood vessels.
That would be the kidney