2024年6月22日 · When sodium (Na +) ions flow from the extracellular space into the cytoplasm of a cell, the effect is excitatory. The cell membrane becomes depolarized, or less negative. The cell membrane becomes depolarized, or less negative.

2023年10月21日 · The voltage-gated sodium channel is a protein channel that lies in the cell membrane. At the resting potential, it is closed, and no ions pass through it. When the membrane is depolarized, it undergoes a conformational change, and allows sodium ions to pass through it.

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2024年4月4日 · Vanishing White matter disease, H&E stain, high power, Labeled Axonal spheroids are a non-specific marker of axonal damage. Proximal to the point where an axon has been damaged, the cell body and proximal axon are still functioning, and axonal transport mechanisms are still trying to move molecules and organelles toward the distal end of the ...

2024年5月7日 · Recent middle cerebral artery infarct, whole mount coronal section through frontal lobe, labeled Last updated on Wednesday, April 15 2009 by jdmiles This is a coronal slice of gross brain, through the left cerebral hemisphere.

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2008年10月30日 · The intermediolateral cell column contains the cell bodies of preganglionic sympathetic efferents. This includes pilomotor, sudomotor, and vasomotor preganglionic neurons. ( See References )

2024年3月31日 · Subependymal giant cell astrocytoma x400 Last updated on Wednesday, April 8 2009 by gliageek Microcalcifications admixed with fibrillary astrocytic cells and epithelioid tumor cells of uncertain histogenesis ( by H&E morphology)

2024年12月22日 · Cavitated MCA infarct, lateral surface of brain, labeled This image shows the lateral surface of the left hemisphere of a person who has suffered a stroke. The cavitating lesion in the parietal lobe is highlighted in green.