Corresponding author. Rafael Armando Bonfante-Cabarcas. Barquisimeto, estado Lara, Venezuela. Chagas disease is a tropical parasitic disease caused by the protozoan Trypanosoma cruzi T.
|Published (Last):||17 May 2014|
|PDF File Size:||17.93 Mb|
|ePub File Size:||1.1 Mb|
|Price:||Free* [*Free Regsitration Required]|
The QT interval measures both repolarization and depolarization. Pyrantel blocks neuromuscular transmission by depolarization in the sensitive parasites, causing paralysis. All cardiac myocyte are capable of spontaneous rhythmic depolarization and repolarization of their membrane.
This improves when repolarization is combined with depolarization parameters. These voltage-gated ion channels allow for rapid depolarization throughout the cell. During depolarization there is a sudden increase in energy consumption. This condition is associated with unstable depolarization of axonal membranes, primarily in the peripheral nervous system. Quantum mechanical treatment explains the absolute precision of the membrane depolarisation in phototransduction.
Phase 0 This is the depolarisation phase. For example, curare is a poison that stops acetylcholine from depolarizing the postsynaptic membrane, causing paralysis.
The brain generates ammonia and its level of generation rises sharply during neuronal depolarization. This interaction of depolarization and repolarization alterations will define the final morphology of the ECG. Consequently, LVH markers based only on depolarization may lose accuracy. The atrioventricular node transmits the depolarization over special fibres His bundles to the ventricles. Blockage of this channel leads to depolarization and secretion of vesicles.
When one pathway into a synapse is stimulated weakly, it produces insufficient postsynaptic depolarization to induce LTP. This depolarization , if it reaches a certain threshold, will cause an action potential. This persistent depolarization makes the muscle fiber resistant to further stimulation by ACh.
Movement of AMPA receptors increases postsynaptic response to presynaptic depolarization through strengthening the synapses. Normal Q waves, when present, represent depolarization of the interventricular septum.
Possibly inappropriate content Unlock Examples are used only to help you translate the word or expression searched in various contexts. They are not selected or validated by us and can contain inappropriate terms or ideas.
Please report examples to be edited or not to be displayed. Rude or colloquial translations are usually marked in red or orange. Suggest an example Results: Exact: Elapsed time: ms. Suggest an example. Meztishura Neurociencia molecular — Wikipedia, la enciclopedia libre GABA es el principal neurotransmisor inhibidor en el cerebro y el glutamato es el principal neurotransmisor excitador del cerebro. El NO y el CO atraviesan las membranas neuronales y se difunden por el espacio extracelular pudiendo alcanzar a grupos de repolarizadion vecinas y actuar sobre ellas sin que haya receptores definidos en sus membranas, por lo que se les considera mensajeros transcelulares.
Cold Spring Harbor Laboratory Press. Estos receptores llevan el nombre de los agonistas que facilitan la actividad del glutamato.
La dopaminauna catecolamina, fue identificada en el nematodo C. Clase de los antiarritmicos que decrece la velocidad de despolarizacion, prolongando la duracion del potencial de accion. A este tipo de sustancias se les denomina antagonistas. Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies.
These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may have an effect on your browsing experience. Necessary Always Enabled. Non-necessary Non-necessary.
DESPOLARIZACION Y REPOLARIZACION PDF
Meaning of "despolarización" in the Spanish dictionary