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Abstract
Nitrous oxide has been used therapeutically as an anesthetic and an analgesic for more than 100 years. The anesthetic effect is thought to be mediated primarily by the reversible inhibition of the N-methyl-d-aspartate type of glutamate receptors resulting in inhibition of excitatory glutamatergic neurotransmission. Nitrous oxide exerts it analgesic effects via activation of opioidergic neurons. Most significant human exposure to nitrous oxide occurs in medical settings either by therapeutic administration or as unintended exposure:
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The states that composed the Central American Federation (also referred to as the Federation of the Centre of America) were the states known today as Costa Rica, El Salvador, Guatemala, Honduras, and Nicaragua. These areas declared independence from Spain on September 15, 1821. In 1810, the Mexican War of Independence began when Catholic priest Miguel Hidalgo y Costilla proclaimed the Grito de Dolores, which was a call to open revolt. A revolt also broke out among Creole groups in El Salvador in 1811. ... On September 15, 1821, Central America officially gained independence from Spain.
Explanation:
Mark me brainly please
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homophones
Explanation:
they sound the same but are spelt different