abstract2 - synapse consists of many channels that make the...

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The brain uses chemical messengers to communicate. Now, scientists are studying about the brains other way to communicate through electrical signaling. The electrical impulses that constantly run through our nervous system are essential for our survival. Most neurons communicate through neurotransmitters that travel though gaps called chemical synapses. Other neurons travel along continuous channels to other cells called electrical synapses. Evidence of electrical signaling was first seen by Edwin Furshpan and David Potter in 1957. Only in the fast few years has science unraveled the cellular workings at the molecular level. An electrical
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Unformatted text preview: synapse consists of many channels that make the cell membrane permeable or ions to deliver messages. Each channel contains twelve membrane proteins call connexins that convey signals directly. In a chemical synapse, neurotransmitter chemicals carry signals between cells. By omitting neurotransmitters, electrical synapses conduct impulses from one neuron to the next at far higher speeds. Chemical synapses secrete neurotransmitters, which must cross the synaptic gap to deliver their message. The entire process takes about half a millisecond. That may seem fast, but for many physiological processes it would be too slow for survival....
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This note was uploaded on 10/31/2011 for the course BIO 102 taught by Professor Robinson during the Spring '09 term at UPenn.

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