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Do Dendrites release neurotransmitters into the extracellular space during nerve impulse transmissions?
Wiki User
∙ 10y ago
Receive, fundamentally, but then subsequently release when its job is done. The axon releases neurotransmitters into the synaptic cleft, where they diffuse across and fit into the receptor sites on ligand-gated ion pores located on the dendrites, where they act to open the ion pores so as to initiate the propagation of the neural signal along the dendrite ; however, those same receptor sites subsequently do release the neurotransmitters, so they can be re-absorbed and re-used by the axon terminals to pass neural signals to the dendrite as subsequent action potentials reach the ends of the axons.
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoWhen neurotransmitters diffuse across a synaptic cleft to a dendrite, they can bind to the receptor sites of ligand gated sodium ion channels, which causes those ion channels to open, which allows sodium ions to diffuse through them into the dendrite, making its membrane potential more positive, which begins the sequence by which that impulse is conveyed along the dendrite and cell body to the axon hillock.
Wiki User
∙ 10y agofalse.
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How is a nerve specialised to carry out its function?
A nerve cell is called a neuron. The neuron has dendrites that receive impules from the previous neuron and send it to the cell body and an axon that transmits the impulse to the next neuron. There is a space between one cell's axon and the next cell's dendrites called a synapse. Neurotransmitters are released from the axon terminal to carry the impulse across the synapse.
What carries impulse toward the cell body of a neuron?
Dendrites.
What do neurotransmitters do?
it can get impulses from the axons to the dendrites
How does an impulse cross a synaptic gap between two nerve cells?
Neurotransmitters send the impulse across the synapse
What impulse conduction is the fastest in neurons?
Axons conduct the nerve impulses. Dendrites receive the impulses. Possible the impulses go through the dendrites faster, though the synaptic cleft may slow this pathway. Dendrites are much shorter than axons.
The synapse is crossed because of the presence of?
Neurotransmitters that cause a chemical change and hence generat impulse in the dendrites of adjacent neurons. most common neurotransmitter is acetylcholine
What is the part of the neuron that carries messages?
Dendrites carry messages to a cell body of a neuron.
How is the message caried from one neuron to another it there is a space between them?
The synaptic gap is the space between the dendrites of one neuron and the axon of the next. The impulse is carried across this space by chemicals called neurotransmitters which conduct the electrical impulse.
How is a nerve specialised to carry out its function?
A nerve cell is called a neuron. The neuron has dendrites that receive impules from the previous neuron and send it to the cell body and an axon that transmits the impulse to the next neuron. There is a space between one cell's axon and the next cell's dendrites called a synapse. Neurotransmitters are released from the axon terminal to carry the impulse across the synapse.
What is the function of the dentrites?
Dendrites are attaches to the axon terminals of other neurons. The nerve impulse travel from other neurons into the corresponding neuron via dendrites.
What structure of a neuron is capable of propagating an electrical impulse?
the dendrites are
What carries impulse toward the cell body of a neuron?
Dendrites.
The neurotransmitters of a neutron enable a nerve impulse to do what?
they transport the nerve impulse through the synapses (:
What do neurotransmitters do?
it can get impulses from the axons to the dendrites
What is the result of sodium ions moving across the axons membrane during an action potential?
a neural impulse(electrical impulse) is released and it travels down the axon of a neuron to the axon terminals. At the axon terminal there are sacs called synaptic vesicles which contain chemicals called neurotransmitters. When the neural impulse reaches the terminal it causes the sacs to move closer to the membrane of the axon terminal and release the neurotransmitters inside. Then neurotransmitters travel across the synaptic gap and stimulate the dendrites of another neuron and the whole process starts again.
What structures cross the synapse to generate the next impulse?
Neurotransmitters.
When an impulse reaches the end of a neuron it tiggers the releases of?
Neurotransmitters
