<P> Neurotransmitters are endogenous chemicals that enable neurotransmission . It is a type of chemical messenger which transmits signals across a chemical synapse , such as a neuromuscular junction , from one neuron ( nerve cell ) to another `` target '' neuron , muscle cell , or gland cell . Neurotransmitters are released from synaptic vesicles in synapses into the synaptic cleft , where they are received by neurotransmitter receptors on the target cells . Many neurotransmitters are synthesized from simple and plentiful precursors such as amino acids , which are readily available from the diet and only require a small number of biosynthetic steps for conversion . Neurotransmitters play a major role in shaping everyday life and functions . Their exact numbers are unknown , but more than 200 chemical messengers have been uniquely identified . </P>
<P> Neurotransmitters are endogenous chemicals that enable neurotransmission . It is a type of chemical messenger which transmits signals across a chemical synapse , such as a neuromuscular junction , from one neuron ( nerve cell ) to another `` target '' neuron , muscle cell , or gland cell . Neurotransmitters are released from synaptic vesicles in synapses into the synaptic cleft , where they are received by neurotransmitter receptors on the target cells . Many neurotransmitters are synthesized from simple and plentiful precursors such as amino acids , which are readily available from the diet and only require a small number of biosynthetic steps for conversion . Neurotransmitters play a major role in shaping everyday life and functions . Their exact numbers are unknown , but more than 200 chemical messengers have been uniquely identified . </P>
what are the areas of the neuron that secrete neurotransmitters called
what are the areas of the neuron that secrete neurotransmitters called
synaptic vesicles
synaptic vesicles