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Question

what is the importance of a synapse?

why does cyton lack a centrosome?

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Solution

Dear Student,

The information flows from one neuron to another neuron through synapse. Presynaptic neuron and the postsynaptic neuron are separated by a small gap — the synaptic cleft. The synaptic cleft is filled with extracellular fluid.

* Membranes of neurons are separated by fluid-filled spaces called synaptic cleft.

* Axon terminals have vesicles filled with chemicals (neurotransmitters).

* Impulse stimulates the movement of synaptic vesicles towards the membrane.

* Here, they fuse with the plasma membrane, and release their neurotransmitters at the synaptic cleft where they bind with their specific receptors.


Answer to your second question is : Centrosomes play an important role in mitosis now since nerve cells do not undergo mitosis they lack centrosomes.


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