hormones and neurotransmitters

dopamine

serotonin

melatonin

secreted by pineal gland to regulate circadian rhythm

GABA

gamma aminobutyric acid inhibits neural activity by hyperpolarizing postsynaptic membrane

glycine

inhibitory neurotransmitter in central nervous system by hyperpolarizing postsynaptic membrane

inhibitory neurotransmitter in spinal cord and brainstem

glycine

inhibitory neurotransmitter in brain

gaba

excitatory neurotransmitter in central nervous system

glutamate

dopamine deficient basal ganglia

parkinson’s disease

excess dopamine or dopamine oversensitivity

schizophrenia

mania

norepinephrine and serotonin

acetylcholine deficient hippocampus

alzheimer’s

low norepinephrine

depression

low serotonin

depression

sweating, pupil constriction, salivation

acetylcholine

gastrin

G cells in stomach and duodenum stimulates HCL and pepsin release

secretin

S cells in duodenum stimulates bicarbonate neutralization of HCl

CCK

cholescystokinin I cells stimulates pancreatic enzyme and gallbladder bile secretion

somatostatin

pancreatic delta cells inhibits insulin and glucagon