Central nervous system and is involved in most

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central nervous system and is involved in most aspects of normal brain function including cognition, memory and learning. Glutamate is toxic, not in spite of its importance, but because of it Glutamate does not only mediate a lot of information, but also information which regulates brain development and information which determines cellular survival, differentiation and elimination as well as formation and elimination of nerve contacts (synapses). From this it follows that glutamate has to be present in the right concentrations in the right places for the right time. Both too much and too little glutamate is harmful. This implies that glutamate is both essential and highly toxic at the same time. It took a long time to realize that glutamate is a neurotransmitter It may sound astonishing, but it took the scientific community a long time to realize that glutamate is a neurotransmitter although it was noted already 70 years ago that glutamate is abundant in the brain and that it plays a central role in brain metabolism. Ironically, the reason for the delay seems to have been its overwhelming importance. Brain tissue contains as much as 5 - 15 mmol glutamate pr kg, depending on the region, more than of any other amino acid. Glutamate is one of the ordinary 20 amino acids which are used to make proteins and takes parts in typical metabolic functions like energy production and ammonia detoxification in addition to protein synthesis. It was hard to believe that a compound with so many functions and which is present virtually everywhere in high concentrations could play an additional role as transmitter. When there is a surplus of glutamate, there is a likelihood of epileptic seizures.
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Norepinephrine Norepinephrine is a neurotransmitter that is secreted in response to stress. It is used for arousal in the fight or flight response and plays a role in learning and memory retrieval. Definition of Norepinephrine Have you ever wondered why your heart beats faster and your palms get sweaty when you're scared? Those are both caused by the release of norepinephrine in your body. Norepinephrine is a chemical released from the sympathetic nervous system in response to stress. It is classified as a neurotransmitter , a chemical that is released from neurons. Because the release of norepinephrine affects other organs of the body, it is also referred to as a stress hormone . The sympathetic nervous system triggers a response that is commonly referred to as our 'fight or flight response.' When we are faced with a situation that is potentially dangerous, we need to make a decision to either stay and face whatever we find intimidating or scary or to turn and run away as fast as we can! Both of these options require our body to work faster and better. This is where norepinephrine comes in. Function In order to make our body work as efficiently as possible, norepinephrine causes several changes in our body function. These include the following: 1. An increase in the amount of oxygen going to our brain - this helps us think clearer and faster.
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  • Summer '18
  • Tara Storm

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