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Chemicals called neurotransmitters move across the synaptic gap by diffusion and carry a neural signal across to the receiving neuron. But the 'bubbles' (vesicles) which contained the neurotransmitter chemicals do NOT themselves cross the synaptic gap, they just release the neurotransmitters into the synaptic gap. (The neurotransmitters move across the synapse, the vesicles do not.)
The vesicles release their contents of neurotransmitters into the synaptic gap by a process called exocytosis, in which the neural impulse which reaches the terminal button of the presynaptic neuron causes voltage-gated calcium ion pores to open, allowing an influx of calcium ions, which leads to the fusing of the vesicles to the cell membrane, which amounts to the vesicles 'turning themselves inside out' as the membrane of the vesicle merges with the cell membrane, which expels the neurotransmitters into the synaptic gap.
The neurotransmitters flow across the synapse to bind with the postsynaptic neuron, potentially triggering neuron excitation (firing) or inhibition (preventing firing).
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Is bubbles a chemical change?
In and of itself, no. Both chemical and physical changes can create bubbles.
How do impulses cross synapse between neurons?
By a chemical released by an axon.
What happens at the synapse between two neuron?
At the synapse, the electrical impulse between the two neutrons at synapse set of chain chemical reactions which create a chemical impulse at the synapse.
Which is the space that separates two neurons?
Synapses
If a piece of metal bubbles was place in acid is that a chemical change?
No, it is not a chemical change. For example, if you put gold bubbles into any single acid, no chemical change will take place.
What type of synapse uses neurotransmitter?
Chemical Synapse
What is the small space between one neuron and the next is called?
A synapse, chemical signals called neurotransmitters cross these gaps, carrying on the signal.
How does the impulse jump the synapse?
Chemical diffusion
What is the role of neurotransmitter at a chemical synapse?
exocytosis
What type of chemicals moves across the space between two nerve cells?
chemical synapse
Which type of synapse dominates the nervous system?
Chemical
Is bubbles a chemical change?
In and of itself, no. Both chemical and physical changes can create bubbles.
What is the chemical secreted into the gap between neurons at the synapse?
The answer is NEUROTRANSMITTER.
Why do chemical messengers get information from synapse?
They act as an active "bridge".
What is the relationship between a synapse and neurotransmitter?
Chemical synapses are specialized junctions through which neurons signal to each other and to non-neuronal cells such as those in muscles or glands. At a chemical synapse, one neuron releases a neurotransmitter into a small space (the synapse) that is adjacent to another neuron.
How are synapses adapted for diffusion?
The synapse releases a chemical that can diffuse across the gap between two neurones. The synapse has a large surface area, which means diffusion of the chemical can occur at a higher rate.
What is the space that impulses jump across by means of a transmitting chemical?
synapse
