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human cardiovascular system, organ system that conveys blood through vessels to and from all parts of the body, carrying nutrients and oxygen to tissues and removing carbon dioxide and other wastes.
cardiovascular system, System of vessels that convey blood to and from tissues throughout the body, bringing nutrients and oxygen and removing wastes and carbon dioxide. It is essentially a long, closed tube through which blood moves in a double circuit—one through the lungs (pulmonary circulation) and one through the rest of the body ...
circulatory system, system that transports nutrients, respiratory gases, and metabolic products throughout a living organism, permitting integration among the various tissues. The process of circulation includes the intake of metabolic materials, the conveyance of these materials throughout the organism, and the return of harmful by-products to ...
Human cardiovascular system, organ system that conveys blood through vessels to and from all parts of the body, carrying nutrients and oxygen to tissues and removing carbon dioxide and other wastes. It is a closed tubular system in which the blood is propelled by a muscular heart.
Heart, organ that serves as a pump to circulate the blood. It may be as simple as a straight tube, as in spiders and annelid worms, or as complex as the four-chambered double pump that is the center of the circulatory system in humans, other mammals, and birds. Learn more about the heart in this article.
The circulatory system, composed of the heart, blood, and blood vessels, circulates a transport fluid throughout the body, providing the cells with a steady supply of oxygen and nutrients and carrying away waste products such as carbon dioxide and toxic nitrogen compounds.
The human cardiovascular system is composed of the heart and the blood vessels—arteries, veins, and capillaries. Its purpose is to provide nutrients and oxygen to the tissues and to remove wastes from them. It is also where the body fights infections.
circulation, in anatomy and physiology, the continuous movement of blood throughout the body, driven by the pumping action of the heart. The circulation of the blood links the sites of oxygen utilization and uptake in the body; thus, it is critical to ensuring that oxygen-rich blood reaches tissues and that oxygen-poor blood is transported away ...
The heart acts as a pump to push the blood throughout the body. The heart is separated into four chambers, or parts. The upper chambers are called atria, and the lower chambers are called ventricles. A valve, or a flap that can open and shut, connects each atrium to the ventricle below it.
The respiratory, circulatory, renal, and digestive systems likewise are interconnected, working together to supply oxygen and blood to tissues, remove wastes, and break down and utilize nutrients. Learn more about these amazing systems through our human body interactive.