the heart, btw that one was easy
Umm.. Heart maybe? Mm oxygen helps too
A disorder of the cardiovascular system, which includes organs such as the heart or arteries.
The three organs or tissues that make up the cardiovascular system are the heart, blood vessels, and blood.
blood , heart ,and lungs
That depends on the organ system. For instance, digestive system is made up of organs esophagus, stomach, pancreas, gall bladder, liver, small intestine, large intestine, as well as various other parts such as teeth, glands, and enzymes.
The organs involved in the cardiovascular system are the lungs, the heart and the brain. Without any one of those organs working properly you can die or live poorly. The blood vessels are the roadways for the blood to travel through out the body but are not to be confused with organs. They are tubes that do a fantastic job but not organs as some people believe. The trachea is the windpipe not an organ as some have mistaken also.
the heart and lungs help too.
The cardiovascular system.
The cardiovascular system
SYSTEMS of organs - such as the respiratory system or the cardiovascular system.
1. Respiratory system 2. Cardiovascular system
cardiovascular