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Hillock

Hillock

in anatomy, any small elevation or prominence.

axon hillock, the conical area of origin of the axon from the nerve cell body; it contains parallel arrays of microtubules and is devoid of nissl substance.

Synonym: implantation cone.


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Re:

... signals that are interpreted by our body. Axons are just propagating the signal. I agree because the nerve impulse is generated at the axon hillock, not in the axon itself.

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by aptitude
Mon Sep 12, 2011 2:19 am
 
Forum: Human Biology
Topic: Axons generate impulse or transfers information
Replies: 2
Views: 3688

Axons generate impulse or transfers information

I know the fact that, if the total strength of the nerve signal exceeds the threshold at axon hillock, it triggers an action potential. But if someone asks me a question about axon being the nerve impulse generator or the structure responsible for transfer of information, ...

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by itsmridecide
Wed Jul 27, 2011 7:38 am
 
Forum: Human Biology
Topic: Axons generate impulse or transfers information
Replies: 2
Views: 3688

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 depolarizes (make cell negative) ...

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by chachi
Wed Dec 02, 2009 2:30 am
 
Forum: Human Biology
Topic: neurology
Replies: 5
Views: 4129

Please help me to answer these questions

... pump plays an important role in restoring resting membrane potential. An for the second, it is a net summation fo both EPSPs and IPSPs at the axon hillock that will determine of the neuron will be depolarized or hyperpolarized. Please tell me if I am on the right path.. Thanks

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by Vangeek
Sun Sep 28, 2008 5:46 pm
 
Forum: Cell Biology
Topic: Please help me to answer these questions
Replies: 4
Views: 4235


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