Examlex
The __________ is the part of the psyche that tries to satisfy a person's basic drives and survival instincts.
Neurotransmitter
Chemical substances in the body that transmit signals across synapses between neurons, playing a crucial role in brain function and communication.
Acetylcholine
A chemical messenger that plays a significant role in muscle activity and memory retention.
Dopamine
A neurotransmitter in the brain that plays a key role in regulating mood, motivation, pleasure, and reward.
Endorphins
These are neurotransmitters produced in the brain that act as natural painkillers and are also associated with feelings of pleasure and well-being.
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