The chemical messengers released into the spatial junctions between neurons are called

The chemical messengers released into the spatial junctions between neurons are called neurotransmitter.

Explanation:

Neurotransmitters are the chemical messengers of the brain, and are used to transmit signals from one neuron to another. This is because neurons don't actually touch each other- they have a gap between them called a synapse or synaptic cleft.

Major Types:

1) Amino acids 2) Gasotransmitters 3) Monoamines 4) Trace amines 5) Peptides 6) Purines and Others are acetylcholine (ACh), anandamide, etc.