Best Answer

You've sort of got it backwards: axon terminals initially release neurotransmitters into the synaptic cleft, from where they diffuse across the cleft and fit into receptor sites on ligand-gated sodium ion pores on the dendrites, causing those pores to open, allowing sodium ions into the dendrite, resulting in a change in the voltage of the dendrites membrane, which initiates the propagation of the signal along the dendrite and soma towards the axon hillock, where it may trigger an action potential in the axon.

However, after the neurotransmitters have done their job at the dendrites, they can be "released" by the dendrites , as in let go of, to be re-absorbed, re-cycled, re-used by the axon terminals.

The axons "give" the neurotransmitters to the dendrites as chemical messengers to convey the signal, and the dendrites "give them back" after the message has been received and conveyed onward.

User Avatar

Wiki User

14y ago
This answer is:
User Avatar
More answers
User Avatar

Wiki User

13y ago

They can cause the post-synaptic neuron to fire (that would be the neuron on the other, receiving, side of the synapse).

However, generally there also needs to be either OTHER neurons releasing neurotransmitters to the post-synaptic neuron, so that the SUMMATION of voltages resulting from many signals will be sufficient to trigger the action potential impulse in the axon of the post-synaptic neuron, or, the rate of release of neurotransmitters from the single neuron would have to be high enough that there would similarly be enough of a voltage experienced at the axon hillock within a short period of time to trigger the action potential (fire the neuron).

Those two conditions for firing a neuron are called SPATIAL, or TEMPORAL summation, meaning that many impulses come to the axon hillock either through many inputs in space, or through time.

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: Do the dendrites receive or release neurotransmitters?
Write your answer...
Still have questions?
magnify glass
Related questions

How does an axon release neurostransmitter?

An axon sends signal from dendrites to terminals to release neurotransmitters

Do dendrites release neurotransmitters?

Not really, but sort of, eventually. Initially they receive neurotransmitters which are originally released by axon terminals into the synaptic cleft; then, after they have done their job of opening ligand-gated ion pores to allow sodium ions into the dendrite, which initiates a graded potential in the dendrite, they are then released so they can be re-absorbed and re-used by the axon terminals as new impulses reach the axon terminals.But functionally it is the axon which releases neurotransmitters, when an action potential causes it, so that dendrites can receive them. The dendrites only "release" them after their job is done, so they can be re-used.

Where are neurotransmitters released?


What role do dendrites play in transmission at chemical synapses?

Dendrites are the beginning of action potentials as they are formed and then propagate through a neuron. At the synapse, the dendrites receive the incoming signal from neurotransmitters released at the terminal of the previous neuron.

The part of the neuron that is responsible for receiving information signals from other neurons is called?

Dendrites are the part of a neuron which receives chemical messages (neurotransmitters) through synapses.Mostly the dendrites receive messages from other neurons, but the cell bodies of neurons also receive direct synaptic inputs from other cells.

What are retrograde neurotransmitters?

Retrograde neurotransmitters are released from dendrites and alter the activity of neighbouring cells. This process is the opposite of typical neurotransmitters, which are released from the axon terminal (of a post synaptic neuron) and act on dendrites. Two examples are the gaseous neurotransmitters Carbon Monoxide and Nitric Oxide.

What is the function of a neuron's dendries?

In general, but not always, dendrites receive neurochemical information from neurotransmitters released by axons. Dendrites are branched extensions of the neuronal cell body, or soma, that receive information from other neurons. The dendrite is the post-synaptic portion of many synapses within the nervous system that contains synaptic receptors that bind to neurotransmitters and respond by excitation or inhibition of the membrane potential.

What areas do the neurotransmitters diffuse through?

Primarily the Brain: from the Axons to the Dendrites.

Chemicals that cross the synaptic space from the axon to the dendrites are called?


What are extensions of a neuron that receive signals?

These are called 'dendrites'

What is dendrites function?

Assuming that the question is What is the function of the dendrites? The answer is: Dendrites receive incoming information from axon terminals.

What is main part of neuron?

There are several key parts to a neuron: dendrites, which receive input, cell body or soma, where the electrical impulses sum, axon, the structure along which the action potential is propagated, and the terminal buttons which release neurotransmitters into the synapse between two neurons.