Dictionary » S » Soma

Soma

Definition

noun, plural: somas

(1) (anatomy) The axial portion of an animal body (i.e. including the head, neck, trunk, and tail)

(2) (neurobiology) Cell body

(3) Alternative name for human body


Supplement

Word origin: Greek sōma (body)

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Do pseudounipolar neurons have one axon and one dendrite?

... that the axon and dendrite are structurally and functionally the same save for the fact that, apparently, dendrites carry impulses towards the soma, whereas axons carry them away. it's a bit picky, but i guess wiki is right.

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by plasmodesmata11
Sun May 23, 2010 1:52 am
 
Forum: Cell Biology
Topic: Do pseudounipolar neurons have one axon and one dendrite?
Replies: 2
Views: 5074

neurology

An action potential fires when the soma (cell body) reaches threshold. It is then, that the axon hillock begins to fire, this firing elicits a cascade of changes with the membrane potential. The voltage gated sodium channels open up, which ...

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by chachi
Wed Dec 02, 2009 2:30 am
 
Forum: Human Biology
Topic: neurology
Replies: 5
Views: 4033

altruism and evolution

I don't why my phrase "sterile soma" has been substituted with "generic drug".

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by anfiosso
Sat Sep 01, 2007 9:21 am
 
Forum: Evolution
Topic: altruism and evolution
Replies: 13
Views: 8116

altruism and evolution

... organism, pluricellular algae for example, clusters of some cells have renounced at their pluripotent phenotype, and they established a sterile soma, whose ending scope is to protect the germinal lineage. What do you think about this reductionist approach?

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by anfiosso
Sat Sep 01, 2007 9:17 am
 
Forum: Evolution
Topic: altruism and evolution
Replies: 13
Views: 8116

centrosomes

According to its name, it refers to the center: Centrosoma = central (adj. centre) + soma (body) or Centriola = central (adj. centre) + -iol (something small) But I believe it does not exactly locate in the centre because nothing is perfect :)

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by Dr.Stein
Sun Oct 22, 2006 2:21 am
 
Forum: Cell Biology
Topic: centrosomes
Replies: 6
Views: 3343
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