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the closed system of tubes that conducts blood throughout the body, it consists of arteries, veins, and capillaries
the smallest blood or lympatic vessels,very thin to allow gas, nutrient, and waste exchange between the blood and tissues.
a waste product of cellular energy production, it is removed from the cells by the blood and eliminated from the body by the lungs
system that transports blood to all areas of the body, the organs, includes the heart and blood vessels
gaseous element absorbed by the blood from the air sacs in the lungs, it is necessary for cells to make energy
transports deoxygenated blood from the right side of the heart to the lungs where oxygen and carbon dioxide are exchanged, then carries oxygenated blood back to the left side of the heart
transports oxygenated blood from the left side of the heart to the cells of the body and then back to the right side of the heart
middle layer of the muscle, it is thick and composed of cardiac muscle, produces the heart contraction
two layer chambers of the heart that receive blood from the atria and pump it back out of the heart
largest artery in the body, located in the mediastinum and carries oxygenated blood away from the left side of the heart
a valve between the left atrium and ventricle, it prevents blood from flowing backwards into the atrium, ahas two cusps or flaps
a valve between the left atrium and ventricle in the heart, prevents blood from flowing backwards into the atrium has two cusps or flaps
semilunar valve between the right ventricle and pulmonary artery in the heart, prevents blood from flowing backwards into the ventricle
heart valves located between the ventricles and the great arteries leaving the heart
a valve between the right atrium and ventricle of the heart, prevents blood from flowing backwards into the atrium, has three cusps or flaps
largest artery in the body located in the mediastinum and carries oxygenated blood away from the left side of the heart
in the heart, conducts the electrical impulse from the atrioventricular node into the ventricles
area at the junction of the right atrium and ventricle receives the stimulus from the sinoatrial node and sends the impulse to the ventricles through the bundle of His
autonomic nervous system
portion of the nervous system that consists of nerves to the internal organs that function involuntarily, regulates the functions of glands, the adrenal medulla, heart, and smooth muscle tissue, is divided into two parts sympathetic and parasympathetic
part of the conduction system of the heart, the electrical signal travels down the bundle of His results int he ventricles beating at a different rate than the atria also called a heart block
bundle of His
located in the interventricular septum, receives the electrical impulse from the atrioventricular node and distributes it through the ventricular walls causing them to contract simultaneously
also called a pacemaker of the heart, is an area of the right atria that initiates the electrical pulse that causes the heart to contract
group of three arteries that branch off the aorta and carry blood to the myocardium
measurment of the pressure that is exerted by blood against the walls of a blood vessel
the lower the pressure within blood vessels during the relaxation phase of the heart beat
expansion and contraction produced by blood as it moves through an artery, can be taken at several pulse points throughout the body where an artery is close to the surface
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