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| heart, blood, and blood vessels |
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| lymph, lymph nodes, and lymph vessels |
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| made up of cardiovascular and lymphatic systems, function is transport of gases, nutrients and hormones; gets rid of waste; and helps maintain constant body temperature |
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| muscular organ between lungs and behind sternum that pumps blood through blood vessels; beats 2.5 billion times in an average lifetime |
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| membrane surrounding the heart |
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| inner layer of the pericardium; visceral pericardium |
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| separates the heart into a right side and left side |
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| pumps blood to other parts of body |
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| flaps of tissue that open in only one direction |
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| Atrioventricular Valve (AV valve) |
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| valve separating atrium from ventricle; blood pressure causes this valve to close as the ventricles pump to prevent backflow into the atria |
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| Semilunar Valve (SL valve) |
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| blood is pumped through here from the ventricles out of the heart into large blood vessels; prevents backflow into the ventricles when the heart relaxes |
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| Sinoatrial Node (SA node) |
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| located in the right atria, is the area in whch the first group of cells are stimulated- they are self-exciting; called pacemaker b/c it regulates rate of contraction of entire heart |
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| Atrioventricular Node (AV node) |
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Definition
| found in the septum between the atria |
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| ventricles contract, AV valve close and SL valves open |
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| ventricles relax, AV valve opens, and SL valves close due to the backpressure of blood |
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| occurs if one valve fails to close properly during backflow |
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| series of pressure waves within an artery caused by the contractions of the left ventricle- most common place to take it is at a radial artery wrist-thumb side (average 70-90bpm) |
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| blood flows in one direction; blood is contained in blood vessels or heart |
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| blood leaves the system and circulates within tissues throughout the organism's body |
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| large, muscular vessels that carry blood away from the heart |
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| the force blood exerts against the inside walls of the blood vessel; measured in arm |
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| a small branch of an artery leading into capillaries |
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| any of the fine branching blood vessels that form a network between the arterioles and venules |
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| a very small vein, esp. one collecting blood from the capillaries |
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| large blood vessel that carries blood to the heart |
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| a large vein carrying deoxygenated blood from the lower body into the heart |
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| a large vein carrying deoxygenated blood from the head, arms, and upper body into the heart |
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| a membranous fold in a hollow organ or tubular structure, such as a blood vessel, that maintains the flow of the contents in one direction by closing in response to any pressure from reverse flow |
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| dilated b/c of weakened valves |
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| blood travels between the heart and lungs |
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| movement of blood between the heart and the rest of the body except the lungs, blood moves from the aorta to other subsystems |
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| supplies blood to the heart through coronary arteries |
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| disease in which fatty materials buildup on the interior wall of an artery; decrease risk of this or heart disease by eating healthy, low saturated fats, not smoking, exercise, manage stress, and keep healthy weight |
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| Hepatic Portal Circulation |
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| supplies liver with blood and takes away waste |
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| supplies kidneys with blood and filters blood and remove waste |
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| transparent yellowish fluid containing white blood cells, that bathes the tissues and drains through the lymphatic system into the bloodstream |
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| function is to return fluids that has collected in tissues to the blood through diffusion |
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| small organs that filter the lymph, removing foreign particles, microorganism, and other tissue debris |
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| white blood cells in lymph nodes, fight disease |
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