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It is a closed tubular system in which the blood is propelled by a muscular heart Drugs have a positive inotropic effect if they increase the force of the heart’s contraction. Two circuits, the pulmonary and the systemic, consist of arterial, capillary, and venous components.
Pulmonary circulation, system of blood vessels that forms a closed circuit between the heart and the lungs, as distinguished from the systemic circulation between the heart and all other body tissues. Inotropic agents are drugs that influence the force of contraction of cardiac muscle and thereby affect cardiac output The circulatory system is the network of tissues, blood vessels, lymph vessels, and supporting components that transports nutrients, respiratory gases, and metabolic products throughout a living organism.
In addition to the lungs, many other organs in the body interact with the cardiovascular system
Blood carries away nutrients from the intestines, which are part of the digestive system. 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. The circulatory system forms a complex communication and distribution network to all physiologically active tissues of the body
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. With the evolution of lungs in early tetrapods, a new and apparently more efficient circulatory system evolved Two chambers of the heart, the atrium (or auricle) and ventricle, became increasingly important, and the beginnings of double circulation appeared.
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