Blood Vessels REGULATION OF HEART RATEstecklescience.weebly.com/.../23227308/blood_vessel... ·...
Transcript of Blood Vessels REGULATION OF HEART RATEstecklescience.weebly.com/.../23227308/blood_vessel... ·...
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CARDIOVASCULARSYSTEMBloodVessels
Intheheart,thestrokevolumeremainsrelatively______________________________.Accordingto
StarlingsLaw,themoreacardiacmuscleis__________________________thestrongerthe
__________________________________.Ifyouwanttochangethecardiacoutputyoumustchangethe
_________________________________.
REGULATIONOFHEARTRATE
Increasetheheartrate
• SympatheticNervousSystem
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• Hormones
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Decreasetheheartrate
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BLOODVESSELS
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THREELAYERS(TUNICS)
• Tunicaintima
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• Tunicamedia
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• Tunicexterna
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DIFFERENCESBETWEEENBLOODVESSELS
Thewallsofthearteriesarecomposedof_______________________muscletohelpmove__________________.Theskeletalmuscleshelp“____________________”thebloodofthe___________________backtotheheart.Thewallsofthecapillariesareonly______cellthicksotherecanbeexchangebetweenthebloodandthetissues.Mostofthearterialbloodispumpedbythe______________________
___________________preventbackflowintheveins.
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Capillarybedsallowforeasyexchangebetweenthe
________________________andthe_________________________________.
Oxygenandnutrientswillpassintothe__________________while
wastesandcarbondioxidewillpassfromthecellintothe
_____________________.
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Pulseisthepressurewaveofthe_____________________________Measureat“__________________________________”wherepulseiseasilypalpated.Theaveragenumberofheartbeatsperminuteis_______________________
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BloodPressureisameasurementmadebyhealthprofessionalsonthelarge_____________________SystolicDiastolicWhathappenstothepressureasthedistancefromtheheartincreases?
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FACTORSAFFECTINGBLOODPRESSURE
NeuralFactors
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RenalFactors
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Temperature
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• Chemicals
• Diet
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VARIATIONSINBLOODPRESSURE
Normal
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Hypotension
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• Hypertension
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DEVELOPMENTALASPECTS
Asimpletubeformsandisreadytopumpbythe_______week.Theheartbecomesafour‐chamberedorganbytheendofthe_______week.Thereareveryfewstructuraldifferencesafterthe_______week.