1.2.3.2 The aircondition HAThere are two important components contributing to regulate blood pressure, that was the sympathetic nervous system and renin-angiotensin system. Increased sympathetic activity increases the power circuit, from which cause the account development and maintain steady blood pressure effects. Renin-angiotensin system have an important role to regulate the physiological functions of cardiovascular system, kidneys and endocrine [13].
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