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NPB 101 Lec 30 - Flashcards

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Class:NPB 101 - Systemic Physiology
Subject:Neurobiology,Physio & Behavior
University:University of California - Davis
Term:Fall 2010
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___________ is the largest artery in the mammalian circulatory system Aorta
TF All events that occur in the left side of the heart occur simultaneously in the right side of the heart true
Atrial-ventricular valves communicate between the atria and the respective ventricles
Blood is returned to the left atria from the ___________ lungs
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P wave is associated with ___________ activation atrial
Why does the left atrium contract? Result of the firing of an AP from the SA node
Immediately after atria contracts, ___________ contraction occurs ventricular
QRS complex associated with ___________ contraction ventricular
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When the ___________ contracts, its pressure increases from near 0 to about 80 mmHg ventricle
When ventricular contraction occurs, ventricular pressure begins to shoot up very rapidly from a very low pressure to a very high pressure
What happens when ventricular pressure exceeds to a higher pressure than atrial pressure? Atrial-ventricular valves close
Closure of atrial-ventricular valves occurs as a result of increased ___________ pressure ventricular
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Closure of the atrial-ventricular valves results in the generation of the first ___________ heart sound
___________ is the period of time during which ventricles contract, the pressure rises very rapidly up to 80 mmHg, but there is no change in ventricular volume Isovolumetric ventricular contraction
At some point, ventricular pressure is going to rise high enough as a result of ventricular contraction that ventricular pressure will exceed aortic pressure
What happens to aortic semilunar valves when ventricular pressure exceeds aortic pressure? forced open by blood leaving the ventricle
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When ventricular pressure exceeds aortic pressure, there is a rapid ejection of blood from the ventricle to the ___________ aorta
___________ is the period of rapid ejection of blood from the ventricle to the aorta Rapid Ventricular ejection
During ___________, the ventricles are contracting, and there is a rapid decrease in ventricular volume Rapid ventricular ejection
During Rapid Ventricular Ejection, ventricles are contracting and there is a rapid decrease in ___________ ventricular volume
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During Rapid Ventricular Ejection, ventricular volume falls from about ____ to ____ 135ml to 65 ml
TF Ventricle doesn't pump out all the blood that had filled it true
___________ is the amount of blood pumped out of the ventricle stroke volume
___________ is the amount of blood pumped out of the ventricle per minute cardiac output
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stroke volume x heart rate = ___________ cardiac output
typical normal heart rate in human = ___________ 70 bmp
stroke volume = change in ___________ ventricular volume
What is the stroke volume? 70 ml
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How much blood is pumped out of the ventricle per minute? ~ 5L/min
___________ fiber length is the fiber length that the muscle fibers would have immediately prior to ventricular contraction initial
When does initial fiber length occur? at the end of diastole
___________ volume is the volume of blood held in the ventricles immediately prior to ventricular contraction end-diastole
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Where did the blood that was pumped by the ventricle go to? the aorta
Ventricles pump blood into arterial system so that the blood can be distributed to the organs and tissues of the systemic circulation
When ventricular pressure exceeds aortic pressure, ___________ valve is opened and stroke volume is ejected into the aorta aortic
Stroke volume being ejected into the aorta increases ___________ aortic blood pressure
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___________ is the rapid ejection of blood leading to ejection of blood into aorta Ejection phase of systole
After the ventricle has ejected blood into the aorta, the ventricle begins to relax, and ventricular pressure begins to ___________ decrease
When ventricular pressure falls after ejecting blood into the aorta, it falls until it falls below prevailing level of ___________ pressure aortic
What happens to the aortic semilunar valves when ventricular pressure falls below level of aortic pressure? they close
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The closing of the ___________ valves generates a second heart sound aortic semilunar valves
___________ is the period of time when all the valves are closed for a brief period of time and no change in ventricular volume Isovolumetric ventricular relaxation
How long does isovolumetric ventricular relaxation last? 30 msec
How long does isovolumetric ventricular contraction last? 50 msec
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___________ last around 300 msec systole
___________ last around 500 msec diastole
Aorta and large arteries are elastic t
Ejecting blood into the ___________ will stretch to accomodate the volume of blood aorta
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What provides force to push blood forward from the aorta toward circulatory system and to the capillary beds? Elastic recoil
As a result of elastic recoil, arterial blood pressure stays at a relatively ___________ level high
Average value for ___________ blood pressure is 100 mmHg arterial
Arterial pressure remains high as a result of elastic recoil to drive blood through arteries and into systemic capillaries YES!
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 ___________ is the largest artery in the mammalian circulatory systemAorta
 TF All events that occur in the left side of the heart occur simultaneously in the right side of the hearttrue
 Atrial-ventricular valves communicate between the atria and the respective ventricles 
 Blood is returned to the left atria from the ___________lungs
 P wave is associated with ___________ activationatrial
 Why does the left atrium contract?Result of the firing of an AP from the SA node
 Immediately after atria contracts, ___________ contraction occursventricular
 QRS complex associated with ___________ contractionventricular
 When the ___________ contracts, its pressure increases from near 0 to about 80 mmHgventricle
 When ventricular contraction occurs, ventricular pressure begins to shoot up very rapidly from a very low pressure to a very high pressure 
 What happens when ventricular pressure exceeds to a higher pressure than atrial pressure?Atrial-ventricular valves close
 Closure of atrial-ventricular valves occurs as a result of increased ___________ pressureventricular
 Closure of the atrial-ventricular valves results in the generation of the first ___________heart sound
 ___________ is the period of time during which ventricles contract, the pressure rises very rapidly up to 80 mmHg, but there is no change in ventricular volumeIsovolumetric ventricular contraction
 At some point, ventricular pressure is going to rise high enough as a result of ventricular contraction that ventricular pressure will exceed aortic pressure 
 What happens to aortic semilunar valves when ventricular pressure exceeds aortic pressure?forced open by blood leaving the ventricle
 When ventricular pressure exceeds aortic pressure, there is a rapid ejection of blood from the ventricle to the ___________aorta
 ___________ is the period of rapid ejection of blood from the ventricle to the aortaRapid Ventricular ejection
 During ___________, the ventricles are contracting, and there is a rapid decrease in ventricular volumeRapid ventricular ejection
 During Rapid Ventricular Ejection, ventricles are contracting and there is a rapid decrease in ___________ventricular volume
 During Rapid Ventricular Ejection, ventricular volume falls from about ____ to ____135ml to 65 ml
 TF Ventricle doesn't pump out all the blood that had filled ittrue
 ___________ is the amount of blood pumped out of the ventriclestroke volume
 ___________ is the amount of blood pumped out of the ventricle per minutecardiac output
 stroke volume x heart rate = ___________cardiac output
 typical normal heart rate in human = ___________70 bmp
 stroke volume = change in ___________ventricular volume
 What is the stroke volume?70 ml
 How much blood is pumped out of the ventricle per minute?~ 5L/min
 ___________ fiber length is the fiber length that the muscle fibers would have immediately prior to ventricular contractioninitial
 When does initial fiber length occur?at the end of diastole
 ___________ volume is the volume of blood held in the ventricles immediately prior to ventricular contractionend-diastole
 Where did the blood that was pumped by the ventricle go to?the aorta
 Ventricles pump blood into arterial system so that the blood can be distributed to the organs and tissues of the systemic circulation 
 When ventricular pressure exceeds aortic pressure, ___________ valve is opened and stroke volume is ejected into the aortaaortic
 Stroke volume being ejected into the aorta increases ___________aortic blood pressure
 ___________ is the rapid ejection of blood leading to ejection of blood into aortaEjection phase of systole
 After the ventricle has ejected blood into the aorta, the ventricle begins to relax, and ventricular pressure begins to ___________decrease
 When ventricular pressure falls after ejecting blood into the aorta, it falls until it falls below prevailing level of ___________ pressureaortic
 What happens to the aortic semilunar valves when ventricular pressure falls below level of aortic pressure?they close
 The closing of the ___________ valves generates a second heart soundaortic semilunar valves
 ___________ is the period of time when all the valves are closed for a brief period of time and no change in ventricular volumeIsovolumetric ventricular relaxation
 How long does isovolumetric ventricular relaxation last?30 msec
 How long does isovolumetric ventricular contraction last?50 msec
 ___________ last around 300 msecsystole
 ___________ last around 500 msecdiastole
 Aorta and large arteries are elastict
 Ejecting blood into the ___________ will stretch to accomodate the volume of bloodaorta
 What provides force to push blood forward from the aorta toward circulatory system and to the capillary beds?Elastic recoil
 As a result of elastic recoil, arterial blood pressure stays at a relatively ___________ levelhigh
 Average value for ___________ blood pressure is 100 mmHgarterial
 Arterial pressure remains high as a result of elastic recoil to drive blood through arteries and into systemic capillariesYES!
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