what is the importance of a synapse?
why does cyton lack a centrosome?
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.