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Epithelial tissue performs different functions based on the different types of matrix that make up the tissue.
Acetylcholine
A neurotransmitter involved in many functions including muscle contraction, arousal, and memory formation.
Norepinephrine
A neurotransmitter and hormone, involved in the body's response to stress, increasing heart rate, blood pressure, and blood sugar levels.
Dopamine
A neurotransmitter involved in many functions, including motivation, reward, attention, and the regulation of movement and emotional responses.
Serotonin
A neurotransmitter that plays a key role in regulating mood, anxiety, appetite, and sleep, among other functions.
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