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How many nephrons are present within the kidneys?
Receptor Molecules
Proteins located on the cell surface or within cells that bind to specific molecules like hormones, antigens, or neurotransmitters, triggering a specific cellular response.
Muscarinic
Referring to a class of cholinergic receptors found in various body tissues, and responding to the neurotransmitter acetylcholine.
Adrenergic
Relating to nerve cells in which adrenaline (epinephrine) or noradrenaline (norepinephrine) function as neurotransmitters, involved in the body's fight-or-flight response.
Autonomic
Pertaining to the autonomic nervous system, which regulates involuntary bodily functions such as heart rate and digestion.
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