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Patrick

Cardiovascular System

TermDefinition
Arteriole Small diameter blood vessel that extends and branches out from an artery and leads to capillaries
Artery Large muscular vessels that carry blood away from the heart
Atria Thin walled blood collection chambers of the heart, pump blood into the ventricles (singular atrium)
Atrioventricular Node Conducts the electrical impulses that come through the SA node through the atria to the ventricles
Atrioventricular Valves Ensure blood flows from the atria to the ventricles
blood pressure the force exerted by circulating blood on the walls of blood vessels.
bundle of his a collection of heart muscle cells specialized for electrical conduction that transmits the electrical impulses from the AV node
cardiovascular system an organ system that moves nutrient hormones gases and waste to and from body cells and distributes heat to maintain homeostasis
capillary smallest of the bodies blood vessels
coronary circulation supplies the heart tissue with blood
distole period of time when the heart relaxes after contraction
heart the muscle organ that pumps blood through the blood vessels by repeated rhythmic contractions
hypertension condition in which a persons blood pressure is chronically high
pulmonary circulation portion of the cardiovascular system which carries de-oxgyenated blood from the heart to the lungs and returns oxygenated blood back to the heart
purkinje fibers specialized cardiac muscle cells that conduct action potentials into the ventricles, causing the cardiac muscle of the ventricles to contract in a controlled fashion
semilunar valves present in the arteries leaving the heart, prevent blood flowing back from the arteries into the ventricles
sinoatrial node know as the cardiac pace maker, responsible for the wave of electrical stimulation that starts atrial contraction by creating an action of potential
sphygmomanometer measures arterial pressure
systemic ciruclation
Created by: laurenethree
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