histamine is the most abundant neurotransmitter in the nervous system.
histamine is the most abundant neurotransmitter in the nervous system.
what is the most abundant neurotransmitter in the nervous system?
histamine
in the brain, serotonin is a neurotransmitter and regulates arousal, behavior, sleep, and mood, among other things. during prolonged exercise where central nervous system fatigue is present, serotonin levels in the brain are higher than normal physiological conditions; these higher levels can increase perceptions of effort and peripheral muscle fatigue. the increased synthesis of brain serotonin occurs because of a higher level of tryptophan, the serotonin precursor, in the blood and which results in larger amounts of tryptophan crossing the blood-brain barrier. an important factor of serotonin synthesis is the transport mechanism of tryptophan across the blood-brain barrier. the transport mechanism for tryptophan is shared with the branched chain amino acids (bcaas), leucine, isoleucine, and valine. during extended exercise, bcaas are consumed for skeletal muscle contraction, allowing for greater transport of tryptophan across the blood-brain barrier. none of the components of the serotonin synthesis reaction are saturated under normal physiological conditions, allowing for the increased production of the neurotransmitter. however the failure of bcaas to decrease time to fatigue consistently limit this hypothesis.
central nervous system fatigue
bullet::::- gap junction









































bullet::::- synaptic plasticity









































bullet::::- long-term potentiation









































section::::some branches of science that study the human nervous system.:components of the nervous system.:neurotransmitter.









































neurotransmitter – endogenous chemical that relays, amplifies, and modulates signals between neurons and other cells to which they are synaptically connected.









































bullet::::- list of neurotransmitters









































bullet::::- neuromodulator









































bullet::::- monoamine neurotransmitter









































bullet::::- neuropeptide









































section::::some branches of science that study the human nervous system.:components of the nervous system.:neurotransmitter receptor.
outline of the human nervous system