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Excitable cell

Excitable cell

(Science: cell biology, physiology) a cell in which the membrane response to depolarisations is nonlinear, causing amplification and propagation of the depolarisation (an action potential). Apart from neurons and muscle cells, electrical excitability can be observed in fertilized eggs, some plants and glandular tissue. Excitable cells contain voltage gated ion channels.


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toxicology question

... of: a) dysregulation of gene expression, b) dysregulation of on-going cellular activity, c) dysregulation of electrically excitable cells d) dysregulation of internal cell maintenance or e) dysregulation of external ...

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by jnguyen
Mon Mar 03, 2008 2:53 am
 
Forum: General Discussion
Topic: toxicology question
Replies: 3
Views: 3479

Why I think Neo-darwinism is dead

... depends on stresses and relaxations . Lev Belousso The soul is that excitable little something that awakens when the sperm and egg embrace In ... DNA the role of absolute governor of the life and inheritance for the cell, and consequently for the organism. The Central Dogma proclaimed: DNA ...

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by supersport
Sat Aug 26, 2006 11:56 pm
 
Forum: Evolution
Topic: Why I think Neo-darwinism is dead
Replies: 26
Views: 20330

Re: impulse transmision...

... membrane. When a node of Ranvier is present, sodiumions flow into the cell and diffuse through the nerve and cause a change in rest potential nearby. ... but the previous node is in its refractory period and is thus not excitable and signalling goes in 1 way.

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by sdekivit
Sat Oct 01, 2005 6:08 pm
 
Forum: General Discussion
Topic: impulse transmision...
Replies: 1
Views: 1633


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