Serotonin is not a hormone. It is a neurotransmitter.
Serotonin is not a neuron, it is a neurotransmitter. It relays information between neurons, with serotonin producing a calming, happy feeling. Lack of serotonin can cause depression, but an over abundance of serotonin can cause psychosis.
serotonin
serotonin
receiving neuron
Serotonin and Dopamine
serotonin. (ap3x)
serotonin
Serotonin is an organic molecule (5-hydroxytryptamine) that acts as a neurotransmitter.
Serotonin
Serotonin
Norepinephrine is a mediator that is considered to be both a neurotransmitter and a hormone. Hormones that are produced by both ovaries and testes are inhibin.