front 1 Blood flow through the cardiovascular system is affected by: | back 1 blood pressure, blood volume,
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front 2 Which of the following factors would most directly affect blood flow through the
| back 2 A. Blood pressure |
front 3 Materials can move across capillary walls by | back 3 Diffusion and osmosis.
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front 4 What things affect vascular resistance | back 4 length of the blood vessel (l), radius of the blood vessel (r), and the viscosity of the blood (η) |
front 5 As blood travels from the aorta toward the capillaries, the | back 5 pressure increases |
front 6 Which of the following has the greatest effect on blood flow | back 6 vessel length |
front 7 Which of the following factors is most likely to result in an increase in blood pressure? | back 7 decreased blood flow to the kidneys |
front 8 Blood flow to a tissue will increase if the? | back 8 arterioles dialate |
front 9 Blood pressure is determined by measuring the | back 9 Force exerted by blood in a vessel against air in a closed cuff. |
front 10 Select the correct statement about factors that influence blood pressure. | back 10 Excess red cell production would cause a blood pressure increase. |
front 11 Which of the following is not one of the three main factors influencing blood pressure?
| back 11 emotional state |
front 12 The blood osmotic pressure is most affected by changes in the | back 12 concentration of plasma proteins |
front 13 Which of the following statements is false concerning the movement of fluid between capillaries and interstitial space | back 13 The blood hydrostatic pressure and the blood osmotic pressure are equal in magnitude but opposite in direction.1 |
front 14 Will result in increase blood flow to a tissue | back 14 increased vessel diameter, increased blood pressure, decreased peripheral resistance, relaxation of precapillary sphincters |
front 15 Will lead to a increase in blood pressure | back 15 incr levels of ADH
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front 16 Stimulation of the aortic baroreceptors result in increased activity by the ____ nervous system | back 16 parasympathetic |
front 17 what happens to venous return during excersice | back 17 increases |
front 18 What happens to cardiac output and stoke volume during increased excercise | back 18 both cardiac output and stroke volume increase |
front 19 In response to hemmorage there is | back 19 mobilization of the venous reserve |
front 20 Symptoms of shock include all of the following, except | back 20 profuse sweating |
front 21 Homeostatic mechanisms can compensate for circulatory shock during the ___ stage. | back 21 compensated |
front 22 Seperates the tunica media and the tunica externa | back 22 external elastic membrane |
front 23 Diffusion occurs between blood and interstitial fluid in which of the following vessels? | back 23 capillaries |
front 24 Which of the following layers of a vessel contains collagen fibers with scattered bands of elastic fibers? | back 24 tunica externa |
front 25 Which vessel is known as a resistant vessel? | back 25 arteriolar |
front 26 May result from the abdominal aorta being clamped too long during a surgical procedure. | back 26 loss of urinary function |
front 27 can result from an aneurysm in the brain? | back 27 stroke |
front 28 You are caring for five patients on the central nursing unit. Which of your five patients is at greatest risk for a myocardial infarction? | back 28 35-year-old white male who smokes 2 packs per day for 20 years |
front 29 Arteriosclerosis can lead to | back 29 coronary atery disease
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front 30 Venoconstriction ________ the amount of blood within the venous system, which ________ the volume in the arterial system. | back 30 reduces; increases |
front 31 Under normal cardiovascular circumstances, blood flow is ________ cardiac output. | back 31 equal to |
front 32 Affect blood flow through the body | back 32 a) resistance
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front 33 You would expect to find fenestrated capillaries in | back 33 the pancreas |
front 34 Factors that increase the risk of atherosclerosis include all of the following, except | back 34 A family history of low blood pressure. |
front 35 What type of vessel would have a greater resistance | back 35 a vessel with a diameter less then 1 mm |
front 36 How would increased sympathetic stimulation of a blood vessel affect the critical closing pressure of the vessel? | back 36 it would increase |
front 37 Affect aortic regurgitation has on pulse pressure | back 37 increase |
front 38 Which of the following would be most likely to have the highest pulse pressure? | back 38 an individual with aortic regurgitation |
front 39 Edema would likely occur when | back 39 the heart is an insufficient pump |
front 40 In which of the following would the rate of blood flow be greatest, assuming the same pressure?
| back 40 A |
front 41 Which of the following will cause a decrease in blood pressure?
| back 41 D |
front 42 The goal of cardiovascular of cardiovascular regulation is to ensure | back 42 that blood flow changes occur
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front 43 Continous capillaries | back 43 (i.e.muscle, fat, nervous tissue)
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front 44 Fenestrated capillaries are found in endocrine glands, intestinal villi and kidney glomeruli and are more permeable than continuous capillaries. | back 44 have intracellular perforations called fenestrae
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front 45 Fenstrated capillaries are more | back 45 permeable than continous capillaries |
front 46 The most common capillaries | back 46 Continuous |
front 47 Arteries | back 47 carry oxygen rich blood back to the heart |
front 48 Capillaries | back 48 connect arteries and veins
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front 49 Veins | back 49 take oxygen-poor blood back to the heart. |
front 50 When renin is released from the juxtaglomerular cells angiotensinogen is converted into | back 50 angiotensin I |
front 51 Capillaries that have a complete lining are called | back 51 continous |
front 52 What structure do RBCs move through single file? | back 52 capillary |
front 53 Increased levels of carbon dioxide in the blood will result in decreased | back 53 parasympathetic stimulation of the heart |
front 54 return blood to the heart | back 54 veins |
front 55 collect blood from capillaries | back 55 venules |
front 56 smallest branches of arteries | back 56 arterioles |
front 57 carry blood away from the heart | back 57 ateries |
front 58 diffusion between blood and interstitial fluid takes places | back 58 capillaries |
front 59 carries blood from the left ventricle to systemic circulation | back 59 aorta |
front 60 carries blood from the right ventricle to the pulmonary circulation | back 60 pulmonary trunk |
front 61 walls of arteries are __than the walls of veins | back 61 thicker |
front 62 ___ have small, round lumen; ___ have large, flat lumen | back 62 artery; veins |
front 63 the lining of a _____ can contract | back 63 vein |
front 64 arteries are ___ elastic than veins | back 64 more elastic |
front 65 ____ contain valves that prevent backflow of blood | back 65 veins |