Chemical Synapse
no
exocytosis
The answer is NEUROTRANSMITTER.
chemical synapse
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.
The action of the excitatory neurotransmitter will increase, since its concentration in the synapse will rise.
neurotransmitter carries the nerve impulses from neuron to neuron across a synapse
After the neurotransmitter is released from the nerve terminal, it moves across the synapse. At that point, the neurotransmitter may bind with receptors.
Neurotransmitter stay for few milliseconds only in the synapse. The rate is difficult to define, but then the decay is most probably exponential decay. The acetylcholine is destroyed by the enzyme acetylcholinestarage. The noradrenaline is taken up back by the neuron, which has secreted it.
Neurotransmitter molecules are removed from a synapse through a process called reuptake or enzymatic degradation. In reuptake, the neurotransmitter is taken back up into the presynaptic neuron. In enzymatic degradation, special enzymes break down the neurotransmitter molecules into inactive byproducts.
The chemical released by the axon that travels across a synapse and binds to dendrites or cells is called a neurotransmitter. Neurotransmitters play a crucial role in transmitting signals between neurons and regulating various physiological processes in the body.
The determination of whether a synapse is excitatory or inhibitory is based on the type of neurotransmitter released at the synapse. Excitatory synapses release neurotransmitters that promote the firing of the receiving neuron, while inhibitory synapses release neurotransmitters that prevent the firing of the receiving neuron.