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Emergency Care -- 13th Edition -- Chapter 7 Flashcards

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3790980702pathophysiologystudy of how disease processes affect the function of the body0
3790983348mitochondriapowerhouse of the cell1
3790986264mitochondriaproduces energy for the cell2
3790990384metabolismthe cellular function of converting nutrients into energy (converting glucose into ATP)3
3791002009adenosine triphosphate (ATP)the cell's internally created fuel, responsible for powering all the other cellular functions4
3791013188sodium potassium pumpspecialized mechanism the actively move ions back and forth across the cell membrane5
3791028741cellbasic building block of the body6
3791034184electrolytessubstances that, when dissolved in water, separate into charged particles7
3791042178important electrolytessodium, potassium, and magnesium8
3791045090glucosesimple sugar obtained from food that is the basic nutrient of the cell (basic building block for energy in the form of ATP)9
3791053505insulinrequired in the blood to help move glucose from the blood into the cells (body must have a consistent supply and must match the body's glucose requirements to ensure that the energy needs of the cells are met)10
3791067335oxygenused by the cell to metabolize glucose into energy11
3791070961aerobic metabolismthe cellular process in which oxygen is used to metabolize glucose. Energy is produced in an efficient manner with minimal waste products, including carbon dioxide12
3791078308anaerobic metabolismthe cellular process in which glucose is metabolized into energy without oxygen. Energy is produced in an inefficient manner with many waste products. Lactic acid is created13
3791637464respiratory systemsupplies the oxygen necessary for aerobic metabolism14
3791642556cardiovascular systemcarries oxygen to the cells15
3791653285cell membranevulnerable element of the cell16
3791659740permeabilitythe ability to effectively transfer fluids, electrolytes, and other substances in and out of the cell17
379167025421%percentage of oxygen in inhaled air18
3791676925fraction of inspired air (FiO2)the fraction of inspired oxygen / the concentration of oxygen in the air we breathe19
3791685003patentopen and clear / free from obstruction20
3791693313tidal volumethe volume of air moved in one cycle of breathing21
3791695056minute volumethe amount of air breathed in during each respiration multiplied by the number of breaths per minute22
3791705326dead air spaceair that occupies the space between the mouth and the alveoli but that does not actually reach the area of gas exchange23
3792285484medulla oblongatathe seat of respiratory control24
3792298373inhalationactive process -- diaphragm contracts, chest expands, negative pressure is created -- air is pulled in through the trachea25
3792307292exhalationpassive process -- diaphragm relaxes, chest returns to normal, positive pressure is created -- air is pushed out26
3792319639hypoxialow oxygen27
3792322168hypercapniahigh carbon dioxide28
3792327321chemoreceptorschemical sensors in the brain and blood vessels that identify changing levels of oxygen and carbon dioxide29
3792334157bloodvehicle by which oxygen and carbon dioxide are transported30
3792339108plasmaliquid portion of the blood31
3792341061hemoglobincarry oxygen in red blood cells32
3792343540white blood cellsfight infection33
3792348763plasma oncotic pressurethe pull exerted by large proteins in the plasma portion of the blood that tends to pull water from the body into the bloodstream34
3792380513hydrostatic pressurethe pressure within a blood vessel that tends to push water out of the vessel35
3792386808anemiadecrease in the number of red blood cells36
3792390050arteries (with one exception)carry oxygenated blood37
3792395956veins (with one exception)carry deoxygenated blood38
3792402305pulmonary arterycarry deoxygenated blood from the heart to the lungs39
3792404215pulmonary veinscarry oxygenated blood from the lungs to the heart40
3792409841capillariesthin walls that allow for movement of substances into and out of the bloodstream41
3792418148arteriolesthe smallest arteries42
3792423897stretch receptorssensors in blood vessels that identify internal pressure and transmits messages to the nervous system to make the necessary adjustments43
3792436744vasodilationuncontrolled dilation of the blood vessels44
3792439885loss of tonethe inability of blood vessels to control their diameter45
3792448532excessive permeabilitycondition in which the capillaries become over permeable (leaky) allowing too much fluid to flow out through their walls46
3792460125stroke volumethe amount of blood ejected from the heart in one contraction (normally 70 mL)47
3792464518preloadhow much blood is returned to the heart prior to the contraction. The greater the filling of the heart, the greater the stroke volume48
3792650750contractilitythe force of contraction, that is, how hard the heart squeezes. The more forceful the muscle squeezes, the greater the stroke volume49
3792662735afterloada function of systematic vascular resistance. It is how much pressure the heart has to pump against to force blood out into the system. The greater the pressure in the system, the lower the stroke volume50
3792700804cardiac outputthe amount of blood ejected from the heart in one minute (heart rate x stroke volume)51
3793167024hypertentionincreased blood pressure52
3793168884hypotensionlow blood pressure53
3793207397ventricular fibrillationheart is quivering and cant contract or pump properly54
3793249153perfusionthe regular supply of oxygen to and removal of wastes from the cells and tissues of the body as a result of the flow of blood through capillaries55
3793271537hypoperfusionthe inability of the body to adequately circulate blood to the body's cells to supply them with oxygen and nutrients56
3793277205hypoperfusionshock57
3793280715hypovolemic shocktype of shock -- low blood volume that leads to reduced pressure in the cardiovascular system. Heart has great difficulty pumping blood to all the necessary regions of the body58
3793309982distributive shocktype of shock -- blood vessel tone is lost, the smooth muscle in the vessels loses its ability to maintain a normal diameter59
3793326141cardiogenic shocktype of shock -- heart fails in its ability to pump blood and the heart can no longer maintain the pressure in the cardiovascular system and blood fails to be pumped to the cells60
3793333826obstructive shocktype of shock -- large quantities of blood are prevented from reaching essential organs and vital areas61
3793353203symptoms of compensated shockslight mental status change / increased heart rate / increased respiratory rate / delayed capillary refill time / pale skin and moist to touch / sweating62
3793380211diaphoresiscool, pale, and moist/sweaty skin63
3793385318decompensated shockcompensatory mechanisms have not been successful or have failed in their effort to sustain perfusion64
3793398423irreversible shockinadequately perfused organ systems begin to die / patient death will soon follow65
379340694560%amount of the body that is made of water66
3793410783intracellularwater that is inside the cells (70%)67
3793411979intravascularwater that is in the bloodstream (5%)68
3793414284interstitialwater that can be found between the cells and blood vessels (25%)69
3793418305dehydrationabnormally low amount of water in the body70
3793423555edemaswelling associated with the movement of water into the interstitial space71
3793429795meningesprotective layers that protect the brain and spinal cord72
3793453308meningitisan infection of the brain and spinal cord73
3793459628hypoglycemialow blood sugar74
3793494693major systems of the endocrine systemkidneys and brain75
3793498210nausea, vomiting, and diarrheamost common digestive disorders76
3793573681hypersensitivityexaggerated immune response (allergic reaction)77
3793606880histaminechemicals released due to hypersensitivity that produces edema and sometimes a narrowing of the airways because of changes in blood vessel permeability78
3793618822signs of neurologic impairmentaltered mental status / seizures / inability or difficulty to speak / visual or hearing disturbance / difficulty walking / paralysis / weakness / loss of sensation / pupil changes79

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