A. A. A. Beta-blockers are drugs used to treat high blood pressure. They block the effects of the sympathetic nervous system on the heart. This reduces the work of the heart so that it requires less blood and oxygen. As a result, the heart doesn't have to work as hard, which in turn lowers blood pressure.. A. Beta-blockers are drugs used to treat high blood pressure. They block the effects of the sympathetic nervous system on the heart. This reduces the work of the heart so that it requires less blood and oxygen. As a result, the heart doesn't have to work as hard, which in turn lowers blood pressure.
sliver noun [C]. âº a very âsmall, âthin âpiece of something, usually âbroken off something âlarger: a sliver of âglass Just a sliver of âcake for me, âplease-I shouldn't really be having any. (Definition of sliver from the Cambridge Advanced Learnerâs Dictionary & Thesaurus Â© Cambridge University Press). See all translations.
The definition of sleet is a form of precipitation that is halfway between rain and snow and that consists of ice pellets, or a thin coating of ice that forms on the ground when there is freezing rain. Wet ice pellets that are a mix of rain and snow and that fall in the late fall and early winter are an example of sleet.