But I'll wait.
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Ang nervous system ay may CNS at PNS. Ang PNS may afferent ay may efferent. Ang efferent may somatic at autonomic. Ang autonomic ay may sympathetic, may parasympathetic. Ang parasympathetic ay may muscarinic at may nicotinic. Ang sympathetic merong alpha 1, alpha 2, beta 1 (puso), beta 2 (baga, atay, at ugat), at beta3 (sa taba). Wala lang.