The atmosphere is quite dusty, giving the Martian sky a light brown or orange-red color when seen from the surface; data from the Mars Exploration Rovers indicate that suspended dust particles of roughly 1.5 micrometres diameter.
Glutamate is a powerful excitatory neurotransmitter that is released by nerve cells in the brain. It is responsible for sending signals between nerve cells, and under normal conditions it plays an important role in learning and memory.
Definition: Glutamate is a type of brain chemical called a neurotransmitter, which means that it helps transmit messages around the brain. It's normally involved in learning and memory. Glutamate is also involved in numerous neurological diseases. Also Known As: L-glutamic acid, glutamic acid, L-glutamate. Frequently Confused With: Glutamine Glutamate performs some necessary functions in your brain. It's considered an excitatory neurotransmitter, which means it stimulates areas in the brain or other parts of the nervous system.