Dictionary » S » Synapse



noun, plural: synapses

A specialized structure or junction that allows cell to cell communication.


(1) To form a synapse.

(2) To undergo synapsis.


A biological synapse involving neurons can be:

(1) Chemical synapse : the junction between neurons such that the nerve impulse is transmitted from a neuron to another neuron or to a muscle cell or gland cell.

(2) Electrical synapse : the gap junction between two apposed neurons that allows faster nerve transmission.

Recently, a biological synapse not involving a neuron is found to exist. The junction between a lymphocyte and an antigen-presenting cell is referred to as immunological synapse.

Word origin: from "synaptein", which Sir Charles Scott Sherrington and colleagues coined from the Greek "syn-" ("together") and "haptein" ("to clasp").
Related forms: synaptic (adjective).

Related terms:

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Results from our forum


Does adrenaline bound to synapse, when it is relased from suprarenal gland? Or its recepors are on just on the surface cells as well?

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by kapital
Fri Jun 28, 2013 8:23 pm
Forum: Physiology
Topic: adrenaline
Replies: 0
Views: 1764

meiome and genome

... for the meiotic transcriptome.[1][2] Meiosis is a key feature for all sexually reproducing eukaryotes in which homologous chromosome pairing, synapse and recombination occur. In addition to strong meiotic stage-specific expression of mRNA (the meiome), however, there are also pervasive translational ...

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by mattw
Sun May 05, 2013 2:58 am
Forum: Genetics
Topic: meiome and genome
Replies: 0
Views: 3360

Re: spinal nerves

2. For example, there could be electrical synapse. Could you than please tell, which one art they(is it)? 3. Ok. From where exactly the structure is refrred as spinal nerve? And where this contributions joint together?(C5-C8, T1)

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by kapital
Wed Jan 09, 2013 8:06 pm
Forum: Human Biology
Topic: spinal nerves
Replies: 2
Views: 2636

Why do neurones only have one axon?

I think more than 1 would cause more issues than it would solve firstly the action potential can spread to multiple other neurones at a synapse and transmit signals very fast. I think what you actually want to know is would having multiple axons on a neurone speed up transmission of a nerve ...

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by Drredfrizzle
Sun Nov 11, 2012 7:46 pm
Forum: Human Biology
Topic: Why do neurones only have one axon?
Replies: 1
Views: 3429

Chemical synapses

you mean how synapses differ in chemical way? Or what is it chemical synapse?

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by JackBean
Sun Aug 12, 2012 12:37 pm
Forum: Cell Biology
Topic: Chemical synapses
Replies: 1
Views: 1968
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