Cardiovascular system 0.0 / 5 ? Physical EducationAnatomy & physiologyA2/A-levelAQA Created by: olliedowell111Created on: 18-01-17 11:58 what is myogenic capacity of the heart to generate its own impulses 1 of 23 what is the sympathetic system part of the autonomic nervous system that speeds up the heart rate 2 of 23 what is the parasympathetic system part of the autonomic nervous system that decreases the heart rate 3 of 23 what is the medula oblangata found in the middle of the brain that regulates the breathing and heart rate 4 of 23 what is the baroreceptors special sensors in the tisue to respond to changes in the blood pressure either decrease or increase 5 of 23 what is chemorecpetors tiny structures in the arotic arch that detect change sin the blood acidity 6 of 23 what is proprioceptors sensonry never endings in the muscles, that detect changes in muscle movement 7 of 23 what is stroke volume the volume of blood pumped out by the heart ventricles per contrationn 8 of 23 what is adrenaline a hormone that is released in the sympathetic nerves during exercise which can cause a increase in the heaert rate 9 of 23 what is diastole phase when the heart relaxes to fill up with blood 10 of 23 what is ejection fraction the percentage of blood pumped pout by the left ventricle 11 of 23 what is cardiac output the volume of blood pumped out by the heart ventricles per minute 12 of 23 Cardiac hyperthrophy thickening of the musclar walla of the heart to become bigger stronger which means larger ventricular cavity 13 of 23 what is bradycarida A decrease in the resting heart rate to below 60 beats per minute 14 of 23 what is stroke occurs when the blood supply is cut off by the brain 15 of 23 what is steady state able to meet oxygen demand with oxygen supply 16 of 23 what is blood pressure force exterted by the blood against the blood vessel walls 17 of 23 what is systolic pressure pressure in arteries when ventricles contract 18 of 23 what is diastolic pressure pressure in arteries when ventricles are relaxing 19 of 23 what is haemoglobin iron containing pigment in red blood cells which is the combination with oxygen to form oxyhaemoglobin 20 of 23 what is bohr shift increase in blood pressure and decrease in carbon dioxide and a decrease in ph levels. 21 of 23 what is vasodilation widening of blood vessels to increase blood flow in the capillaries 22 of 23 what is vasoconstriction narowing of the blood vessels to reduce blood flow in the capillaries 23 of 23
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