Biochemistry
Adrenergic receptors are a class of G protein-coupled receptors that respond to catecholamines, such as adrenaline (epinephrine) and noradrenaline (norepinephrine). They play a crucial role in the sympathetic nervous system, mediating various physiological responses like increased heart rate, bronchodilation, and glucose metabolism. The activation of these receptors leads to the engagement of second messengers within the cell, amplifying the physiological effects initiated by catecholamines.
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