Sunday, December 26, 2010

Neurotransmitters

Acetylcholine


  • is the first discovered neurotransmitter
  • acts as a chemical transmitter in both the parasympathetic and central nervous system
  • stimulates muscles and excites the nerves by delivering Na ions
  • too much can cause decreased heart rates, but too little can cause motor dysfunction

Serotonin

  • synthesized from  A.A. tryptophin
  • involved in transmitting nerve signals
  • it affects our mood and keeps our emotions under control 
  • serotonin is used as medication to alter patient's moods 
  • foods that increase serotonin levels: dark chocolate, whey protein, nicotine

Endorphins

  • endorphins can be found in the pituitary and within the nervous system
  • it works to relieve pain, leading to pleasurable feelings
  • as a result, stress and pain are the two most common factors that lead to release of endorphins within the body
  • chocolate enhances secretion of endorphins

Norepinephrine

  • a stress hormone and neurotransmitter
  • main purpose is to relieve stress (secreted by the brain)