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The SA node initiates an impulse between 50 to 75 times per minute.
Adenosine
A nucleoside compound that plays a crucial role in cellular energy transfer and signal transduction.
Serotonin
A neurotransmitter in the brain that regulates mood, appetite, and sleep, among other functions, and is associated with feelings of well-being and happiness.
Polysomnography
A comprehensive sleep study used to diagnose sleep disorders, monitoring brain, heart, lung, and muscle activity during sleep.
Restless Legs Syndrome
A neurologic disorder characterized by an uncontrollable urge to move the legs, usually due to an uncomfortable sensation; typically occurs during periods of inactivity or at night.
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