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knownot

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biology biophysics brain dance medicine mri neuron neuroscience nuclear magnetic resonance physics physiology

About knownot

I have a B.Sc. in biophysics and now i'm a neuroscience graduate student in the Technion, Israel.

I like to dance, listen to music, read and bake bread.

Member Since May 22, 2006
28, Female, Israel

Answers

Why is nerve fiber said to represent electrochemical

Nerve fibers contain ion-channels within their membrane. These ion-channels pass specific ions from the outside of the cell inward or in the opposite direction (depends on the concentration ...

Submitted by knownot 8 months ago

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How does diffusion act against a gradient?

Diffusion (a passive transport of matter) is a movement of matter and its direction is determined by the matters gradient. The only way I know of in witch matter can passively diffuse agains its ...

Submitted by knownot 1 year ago

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Possible frontal lobe brain injury

MRI would have shown sighns of head trauma, but sometimes there are neuropsychological simptoms that don't show in MRI or CT. A known simptom of head trauma is the appearance of sleep disorders So ...

Submitted by knownot 1 year ago

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When does DNA replication occur in a cell and why ...

In eukaryotic organisms (organisms that have internal membranes for separation of organelles) DNA replication occurs in the cell nucleus during the "S phase" of the cell cycle. In animals, After the ...