PSYA01H3 Chapter 3.2: PSYA01H3 Chapter 3.: Chapter 3.2
Document Summary
Cells and neurotransmitters: neurons: one of the major types of cells found in the nervous system, that are responsible for sending and receiving messages throughout the body. When a stem cell divides, the resulting cells can become anything. The depending factor is the stem cell"s chem env. Numbness and tingling: disruption of sensory nerve cell signals that should otherwise reach the brain. This difference in charge b/w the inside and outside of the cell leaves the inside of the axon w/ a neg charge of approximately - Dopamine: control of movement, reward-seeking behaviour, cognition and attention. Norepinephrine: memory, attention to new or important stimuli, regulation of sleep and mood. Glutamate: excites nervous system, memory and autonomic nervous system reactions. Result: elevation in mood and less depr/anx symptoms. A drug binds to the presynaptic cell membrane and prevents dopamine from entering, leaving extra dopamine in the synapse to bind with the postsynaptic cell. agonist.
