The Heart.
the heart.
The heart is a four chambered pump that forces blood around the circulatory system, also known as the cardiovascular system. Which rather makes the heart a major (and very important) organ.
The heart is a part of the cardiovascular system.
An organ system.
The Cardiovascular system
Yes, blood is not considered an organ of the cardiovascular system. Blood is a fluid connective tissue that circulates through the cardiovascular system, which consists of the heart and blood vessels.
Cardiovascular
the heart is its own organ if you mean system it is part of the cardiovascular system.
Cardiovascular system
The heart is an organ within the circulatory system. It is make up of different tissues working together to pump blood.
heart
The cardiovascular system.