Cardiovascular physiology: Difference between revisions

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Latest revision as of 03:51, 5 November 2012

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Assistant Editor(s)-in-Chief: Rim Halaby

Anatomy of the heart

Coronary circulation

Microcirculation

Cardiac electrophysiology

Cardiac muscle

Cardiac cycle

Pressure-volume loop

Hemodynamics

Key Words

Listed in alphabetical order:

Template:WikiDoc Sources

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+__NOTOC__
 {{SI}}
-{{CMG}}
+{{CMG}}; '''Assistant Editor(s)-in-Chief:''' [[User:Rim Halaby|Rim Halaby]]
+==[[Anatomy of the heart]]==
+==[[Coronary circulation]]==
+==[[Microcirculation]]==
+==[[Cardiac electrophysiology]]==
-'''Cardiovascular physiology''' is the study of the [[circulatory system]]. More specifically, it addresses the [[physiology]] of the [[heart]] ("cardio") and [[blood vessel]]s ("vascular").
+==[[Cardiac muscle]]==
+==[[Cardiac cycle]]==
-These subjects are sometimes addressed separately, under the names "cardiac physiology" and "circulatory physiology".<ref>[http://www.lib.mcg.edu/edu/eshuphysio/program/section3/3outline.htm Overview] at [[Medical College of Georgia]]</ref>
+==[[Pressure-volume loop]]==
+==[[Hemodynamics]]==
-Although the different aspects of cardiovascular physiology are closely interrelated, the subject is still usually divided into several subtopics.
-==Heart==
-:''See [[Heart#Physiology]] for more details''
-* [[Cardiac output]] (= [[heart rate]] * [[stroke volume]]. Can also be calculated with [[Fick principle]].)
-** [[Stroke volume]] (= [[end-diastolic volume]] - [[end-systolic volume]])
-** [[Ejection fraction]] (= stroke volume / end-diastolic volume)
-** [[Inotropic]], [[chronotropic]], and [[dromotropic]] states
+==Key Words==
+''Listed in alphabetical order:''
+* [[Angiotensin]]
+* [[Aortic body]]
+* [[Autoregulation]]
+* [[Baroreceptor]]
+* [[Baroreflex]]
+* [[Blood pressure]]
+* [[Blood vessel]]
+* [[Cardiac action potential]]
+* [[Cardiac output]]
+* [[Cardiac pacemaker]]
+* [[Carotid body]]
+* [[Central venous pressure]]
+* [[Chronotropic]]
+* [[Compliance (physiology)|Compliance]]
+* [[Diastole|Diastolic pressure]]
+* [[Dromotropic]]
+* [[Ejection fraction]]
 * [[Electrical conduction system of the heart]]
-** [[Electrocardiogram]]
+* [[Electrocardiogram]]
-** [[Cardiac pacemaker]]
+* [[End-diastolic volume]]
-** [[Cardiac action potential]]
+* [[End-systolic volume]]
+* [[Fick's law of diffusion]]
 * [[Frank-Starling law of the heart]]
-* [[Wiggers diagram]]
+* [[Heart]]
-* [[Pressure volume diagram]]
+* [[Heart rate]]
+* [[Inotropic]]
-==Blood vessels==
+* [[Juxtaglomerular apparatus]]
-:''See [[Blood vessel#Physiology]] for more details''
+* [[Mean arterial pressure]]
-* [[Compliance (physiology)|Compliance]]
 * [[Microcirculation]]
-* [[Starling equation]]
-* [[Fick's law of diffusion]]
 * [[Poiseuille's law]]
+* [[Pressure volume diagram]]
+* [[Pulse pressure]]
+* [[Renin]]
+* [[Renin-angiotensin system]]
 * [[Skeletal-muscle pump]]
+* [[Starling equation]]
-==Regulation of blood pressure==
-* [[Baroreceptor]]
-* [[Baroreflex]]
-* [[Renin-angiotensin system]]
-** [[Renin]]
-** [[Angiotensin]]
-* [[Juxtaglomerular apparatus]]
-* [[Aortic body]] and [[carotid body]]
-* [[Autoregulation]]
-===Hemodynamics===
-Under most circumstances, the body attempts to maintain a steady [[mean arterial pressure]].
-When there is a major and immediate decrease (such as that due to [[hemorrhage]] or [[Orthostatic hypotension|standing up]]), the body can increase the following:
-* [[Heart rate]]
-* [[Total peripheral resistance]] (primarily due to [[Vasoconstrictor|vasoconstriction]] of [[arteries]])
-* [[Inotrope|Inotropic state]]
-In turn, this can have a significant impact upon several other variables:
 * [[Stroke volume]]
-* [[Cardiac output]]
+* [[Systole (medicine)|Systolic pressure]]
-* Pressure
+* [[Total peripheral resistance]]
-** [[Pulse pressure]] ([[Systole (medicine)|systolic pressure]] - [[Diastole|diastolic pressure]])
+* [[Wiggers diagram]]
-** [[Mean arterial pressure]] (usually approximated with diastolic pressure + 1/3 pulse pressure)
-** [[Central venous pressure]]
-==Regional circulation==
-{| class="wikitable"
-| '''Name of circulation''' || '''% of [[cardiac output]]'''  || '''[[Autoregulation]]''' || '''[[Perfusion]]''' || '''Comments'''
- |-
- | [[pulmonary circulation]] || 100% (deoxygenated) ||  ||  || [[Vasoconstriction]] in response to [[hypoxia]]
- |-
- | [[cerebral circulation]] || 15%<ref>{{GeorgiaPhysiology|3/3ch11/s3c11_13}}</ref>  || high  || under-perfused || Fixed volume means intolerance of high pressure. Minimal ability to use [[anaerobic respiration]]
- |-
- | [[coronary circulation]] || 5%  || high  || under-perfused  || Minimal ability to use [[anaerobic respiration]]. Blood flow through the [[left coronary artery]] is at a maximum during [[diastole]] (in contrast to the rest of [[systemic circulation]], which has a maximum blood flow during [[systole]].)
- |-
- | [[splanchnic]] circulation || 15% || low  ||   || Flow increases during [[digestion]].
- |-
- | [[hepatic circulation]] || 15% ||  ||  || Part of [[portal venous system]], so [[oncotic pressure]] is very low
- |-
- | [[renal circulation]] || 25%  || high || over-perfused || Maintains [[glomerular filtration rate]]
- |-
- | [[skeletal muscle]] circulation || 17%<ref>{{GeorgiaPhysiology|3/3ch11/s3c11_2}}</ref> || ||  || Perfusion increases dramatically during [[exercise]].
- |-
- | [[cutaneous]] circulation || 2%<ref>{{GeorgiaPhysiology|3/3ch11/s3c11_10}}</ref>  || || over-perfused || Crucial in [[thermoregulation]]. Significant ability to use [[anaerobic respiration]]
-|}
-==References==
-<references/>
-==External links==
-* {{MeshName|Cardiovascular+physiology}}
-* www.cvphsysiology.com - Comprehensive explanation of basic cardiovascular concepts.
 {{Cardiovascular physiology}}
 [[Category:Cardiology]]

Cardiovascular physiology: Difference between revisions

Latest revision as of 03:51, 5 November 2012

Key Words

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