it is stored in vacuoles then released into the synapse.
it is produced else where only aqbt 3% in your brrain
it is produced in the brain.
The pineal gland.
dopamine and serotonin are some brain homones
seratonin is the chemical your brain produces that gives you for lack of a better word, happiness.
The pineal gland is at or very near the center of the brain and it produces serotonin.
When you are happy the brain releases chemical such as serotonin.
the Frontal Cortex
serotonin
Serotonin is a brain chemical which we all have in our brains. It has 3 actions in the brain: 1. It gives us self-confidence, a feeling of safety and security. 2. It causes us to feel sleepy. 3. It increases our appetites. The part of the brain where it does each of these 3 things is a different part of the brain from the part where the other 2 things occur. Thus, for example, increasing serotonin in the part of the brain where self-confidence is will increase your self-confidence, but not your sleepiness. Unfortunately, we have no medications to increase only the serotonin in one part of the brain. This explains why medications to increase serotonin in the brain can also cause increased appetite and sleepiness. Medications which increase serotonin in the brain (SSRI's such as citalopram, escitalopram, fluoxetine, paroxetine, and sertraline and SNRI's such as venlafaxine and duloxetine) give us more self-confidence, and a feeling of safety and security. By the way, serotonin also exists in our gastrointestinal tracts. In this location, it stimulates digestion. This is why such medications can cause gastrointestinal upset. But they can also help constipation.
Substantial nigra
The pineal gland....
The nervous system, especially the brain, produces endorphins.
serotonin
serotonin