Definition of fatalism for English Language Learners : the belief that what will happen has already been decided and cannot be changed Learn More about fatalism
The receptors most relevant to the pharmacology of vasopressors are adrenoceptors. Adrenoceptors, sometimes referred to as adrenergic receptors, interact with norepinephrine, epinephrine, and chemically similar drugs (called adrenomimetic, adrenergic, or sympathomimetic agents).
5-hydroxytryptamine receptor antagonists (5-HT3 RAs) are a group of drugs which are used to control nausea and vomiting. They get their name through their ability to block 5-hydroxytryptamine (also known as serotonin) from activating nerves that bring about the vomiting reflex. 5-HT 3 RAs, or serotonin blockers, were originally discovered in the 1990s and are one of the newest types of anti-vomiting drugs on the market.