How does quartz watch give time?​

quartz gives time by, oscillator in which vibrates quickly and precise frequency In around 32,768 times-second in response to the electronic charge.

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these muscles maintain the blood pressure in the vessels. the smooth muscles are innervated by nerves of the autonomic nervous system. when the muscles contract, they cause vasoconstriction of the vessels and increase blood pressure. when the muscles relax, they enable vasodilation of the   blood vessels hence reduce blood pressure.