How are Nerve impulses transferred? What chemicals are involved?

I’m having a bit of trouble with my human anatomy: nervous system/robotics unit in school. Lend a hand? I can’t find anything on the net.
The site doesn’t really help; we’re learning how to make and program robots and the question is what particular chemical is used in it. It says nothing in our textbook about it, it does say how they’re transferred and I have answered that already but I can’t find anything on the chemical.
Sorry; used in transferring impulses, not making robots. O__o

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4 comments

  • hi, i have found a site which might help you.. jus check it out i found it relavent

  • that question is very broad and people could answer it with a very basic statement or to a level of complexity that only 1 in 50 million people would understand. there should be endless info on the net… try the interesting link below…

    http://www.acm.uiuc.edu/sigbio/project/nervous/

  • nerve signals are sent via the neurotransmitter and the neurotransmitter receptors receive the information send to brain and perform the function required.

    The nerves don’t touch but send pulses over the gap (called the synaptic gap)

    The synaptic vesicles release the information into the synaptic gap which is ‘pulsed’ to the neurotransmitter receptor.

    some chemicals invovled are:-

    acetylcholine – usually an excitable chemical

    serotonin – inhibitor of pain pathway in spinal cord

    noradrenaline – located in brainstem usually excitable

    dopamine – found in midbrain and usually inhibitory

    glutamate – excitatory effect found in brain

    glycine – inhibitory effect found in spinal cordd

    encephalin – excitatory to systems that inhibit pain

    endorphin – excitatory to systems that inhibit pain

    substance p – excitatory effect found in sensory nerves, spinal cord pathways and parts of the brain associated with pain tranmissions.

    There are about 30 known neurotransmittors that exist

  • Several chemicals are involved;
    calcium ions,
    Acetylcholine,
    amino acids ( primarily glutamic acid, GABA, aspartic acid & glycine)
    Over 50 neuroactive peptides (vasopressin, somatostatin, neurotensin, etc.) have been found, among them hormones such as LH or insulin
    monoamines (norepinephrine NE, dopamine DA & serotonin 5-HT)
    Purines, (Adenosine, ATP, GTP)

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