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.
Sleet is ice in small pellet form, very near the melting point and often mixed or coated with liquid water, Snow forms in a cold â¦ air (below freezing) and falls to ground in cold air. Sleet may be snow that has fallen through a warm layer of air, melted, then through a colder layer where it freezes again. It can also be rain that falls from a warm layer of air (above freezing) and passes through cold air (below freezing) on the way down, freezing into small ice pellets.