Three primary sets of neurochemistry coordinate with the neurology to create autonomic states.
These include the connection chemistries of Oxytocin and Vasopressin (the chemistry of love and bonding).
The activation chemistries of adrenaline (this is the more common name, but it is also called epinepherine) and cortisol that prepare our body to fight or flee.
The shutdown chemistries of endogenous opioids that immobilize us, and help us dissociate if there is a lifethreat.
These can be released singly or in combination, with other neurotransmitters and other hormones. They suffuse the inward ocean that bathes the interior of our bodies.