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Chapitre 18

Système nerveux

Qu'est-ce que le système nerveux ?
The nervous system is the collection of specialized cells responsible for maintaining an organism’s internal environment and coordinating the…
Le système nerveux parasympathique
The parasympathetic nervous system is one of the two major divisions of the autonomic nervous system. This parasympathetic system is responsible…
Le système nerveux sympathique
The sympathetic nervous system—one of the two major divisions of the autonomic nervous system—is activated in times of stress. It…
La barrière hémato-encéphalique
The blood-brain barrier (BBB) refers to the specialized vasculature that provides the brain with nutrients in the blood while strictly regulating…
Structure des neurones
Neurons are the main type of cell in the nervous system that generate and transmit electrochemical signals. They primarily communicate with each…
La synapse
Neurons communicate with one another by passing on their electrical signals to other neurons. A synapse is the location where two neurons meet to…
Cellules gliales
Glial cells are one of the two main types of cells in the nervous system. Glia cells comprise astrocytes, oligodendrocytes, microglia, and…
Potentiel de membrane au repos
The relative difference in electrical charge, or voltage, between the inside and the outside of a cell membrane, is called the membrane potential.…
Potentiel d'action
Neurons communicate by firing action potentials—the electrochemical signal that is propagated along the axon. The signal results in the…
Potentialisation à long terme
Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in…
Dépression à long terme
Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in…
Immunostaining to Visualize Murine Enteric Nervous System Development
The enteric nervous system is formed by neural crest cells that proliferate, migrate and colonize the gut. Following colonization, neural crest cells…
Three-dimensional Tissue Engineered Aligned Astrocyte Networks to Recapitulate Developmental Mechanisms and Facilitate Nervous System Regeneration
Neurotrauma and neurodegenerative disease often result in lasting neurological deficits due to the limited capacity of the central nervous system…
A <em>Drosophila In Vivo</em> Injury Model for Studying Neuroregeneration in the Peripheral and Central Nervous System
The regrowth capacity of damaged neurons governs neuroregeneration and functional recovery after nervous system trauma. Over the past few decades,…

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