Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Ventricular_action_potential> ?p ?o }
Showing triples 1 to 41 of
41
with 100 triples per page.
- Ventricular_action_potential abstract "In electrocardiography, the ventricular cardiomyocyte membrane potential is about −90 mV at rest, which is close to the potassium reversal potential. When an action potential is generated, the membrane potential rises above this level in four distinct phases.The beginning of the action potential, phase 0, specialized membrane proteins (voltage-gated sodium channels) in the cell membrane selectively allow sodium ions to enter the cell. This causes the membrane potential to rise at a rate of about 300 V/s. As the membrane voltage rises (to about 40 mV) sodium channels close due to a process called inactivation.The Na+ channel opening is followed by inactivation. Na+ inactivation comes with slowly activating Ca2+ channels at the same time as a few fast K+ channels open. There is a balance between the outward flow of K+ and the inward flow of Ca2+ causing a plateau of length in variables. The delayed opening of more Ca2+-activated K+ channels, which are activated by build-up of Ca2+ in the sarcoplasm, while the Ca2+ channels close, ends the plateau. This leads to repolarisation.The depolarization of the membrane allows calcium channels to open as well. As sodium channels close calcium provides current to maintain the potential around 20 mV. The plateau lasts on the order of 100 ms. At the time that calcium channels are getting activated, channels that mediate the transient outward potassium current open as well. This outward potassium current causes a small dip in membrane potential shortly after depolarization. This current is observed in human and dog action potentials, but not in guinea pig action potentials.Repolarization is accomplished by channels that open slowly and are mostly activated at the end of the action potential (slow delayed-rectifier channels), and channels that open quickly but are inactivated until the end of the action potential (rapid delayed rectifier channels). Fast delayed rectifier channels open quickly but are shut by inactivation at high membrane potentials. As the membrane voltage begins to drop the channels recover from inactivation and carry current.".
- Ventricular_action_potential thumbnail Action_potential_ventr_myocyte.gif?width=300.
- Ventricular_action_potential wikiPageID "298614".
- Ventricular_action_potential wikiPageLength "2705".
- Ventricular_action_potential wikiPageOutDegree "19".
- Ventricular_action_potential wikiPageRevisionID "654685486".
- Ventricular_action_potential wikiPageWikiLink Action_potential.
- Ventricular_action_potential wikiPageWikiLink Calcium.
- Ventricular_action_potential wikiPageWikiLink Cardiac_action_potential.
- Ventricular_action_potential wikiPageWikiLink Cardiac_muscle_cell.
- Ventricular_action_potential wikiPageWikiLink Cardiomyocyte.
- Ventricular_action_potential wikiPageWikiLink Category:Cardiac_electrophysiology.
- Ventricular_action_potential wikiPageWikiLink Cell_membrane.
- Ventricular_action_potential wikiPageWikiLink Electrocardiography.
- Ventricular_action_potential wikiPageWikiLink HERG.
- Ventricular_action_potential wikiPageWikiLink Integral_membrane_protein.
- Ventricular_action_potential wikiPageWikiLink Ion.
- Ventricular_action_potential wikiPageWikiLink Ion_channel.
- Ventricular_action_potential wikiPageWikiLink KvLQT1.
- Ventricular_action_potential wikiPageWikiLink Membrane_potential.
- Ventricular_action_potential wikiPageWikiLink Potassium.
- Ventricular_action_potential wikiPageWikiLink Reversal_potential.
- Ventricular_action_potential wikiPageWikiLink Sodium.
- Ventricular_action_potential wikiPageWikiLink File:Action_potential_ventr_myocyte.gif.
- Ventricular_action_potential wikiPageWikiLinkText "Ventricular action potential".
- Ventricular_action_potential wikiPageWikiLinkText "ventricular action potential".
- Ventricular_action_potential hasPhotoCollection Ventricular_action_potential.
- Ventricular_action_potential wikiPageUsesTemplate Template:Cardiovascular_physiology.
- Ventricular_action_potential wikiPageUsesTemplate Template:Unreferenced.
- Ventricular_action_potential subject Category:Cardiac_electrophysiology.
- Ventricular_action_potential type Article.
- Ventricular_action_potential type Article.
- Ventricular_action_potential comment "In electrocardiography, the ventricular cardiomyocyte membrane potential is about −90 mV at rest, which is close to the potassium reversal potential. When an action potential is generated, the membrane potential rises above this level in four distinct phases.The beginning of the action potential, phase 0, specialized membrane proteins (voltage-gated sodium channels) in the cell membrane selectively allow sodium ions to enter the cell.".
- Ventricular_action_potential label "Ventricular action potential".
- Ventricular_action_potential sameAs Potenziale_dazione_ventricolare.
- Ventricular_action_potential sameAs m.01rm1m.
- Ventricular_action_potential sameAs Q7920311.
- Ventricular_action_potential sameAs Q7920311.
- Ventricular_action_potential wasDerivedFrom Ventricular_action_potential?oldid=654685486.
- Ventricular_action_potential depiction Action_potential_ventr_myocyte.gif.
- Ventricular_action_potential isPrimaryTopicOf Ventricular_action_potential.