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Neurons and Neurotransmitters

Acetylcholine

Definition Acetylcholine (ACh) is a neurotransmitter, which is a chemical messenger that helps tr...

Action Potential

Definition An action potential is a rapid electrical impulse that travels along the membrane of a...

Adrenaline

Definition Adrenaline, also known as epinephrine, is a hormone and neurotransmitter produced by t...

All-or-Nothing Response

Definition The all-or-none response refers to how neurons (nerve cells) work: when a neuron recei...

Axon

Definition An axon is a long, slender projection of a nerve cell (neuron) that carries electrical...

Dendrites

Definition Dendrites are tree-like extensions of neurons, which serve as the input regions where ...

Dopamine

Definition Dopamine is a neurotransmitter, which is a type of chemical in the brain that helps tr...

Endorphins

Definition Endorphins are natural chemicals produced in your brain that act as your body’s way of...

Gamma-aminobutyric acid (GABA)

Definition Gamma-aminobutyric acid (GABA) is a neurotransmitter, which means it's a chemical that...

Glial Cells

Definition Glial cells are specialized non-neuronal cells found in the nervous system that play a...

Glutamate

Definition Glutamate is a type of amino acid that plays a crucial role in the human body, particu...

Melatonin

Definition Melatonin is a hormone produced by the pineal gland in the brain. It plays a key role ...

Neuron

Definition A neuron is a specialized cell in the nervous system that transmits information throug...

Neurotransmitter

Definition A neurotransmitter is a chemical messenger in the brain that allows neurons (specializ...

Reuptake

Definition Reuptake is a process in the brain where neurotransmitters—chemicals that transmit sig...

Serotonin

Definition Serotonin is a chemical compound in the body that acts as a neurotransmitter, meaning ...

Synapse

Definition A synapse is a tiny gap between neurons where communication occurs through chemical me...

Mirror Neurons

Definition Mirror neurons are specialized brain cells that activate both when an individual perfo...