ramp 1. (rÄmp) n. 1. An inclined surface or roadway connecting different levels. 2. A mobile staircase by which passengers board and leave an aircraft. 3. A concave bend of a handrail where a sharp change in level or direction occurs, as at a stair landing.
About H2 blockers. H2 blockers â also known as histamine 2 receptor antagonists â are medications that decrease the amount of acid the stomach produces. These drugs are used to treat various gastrointestinal disorders.2 blockers can slow the time it takes to eliminate certain drugs from the body. Of particular concern to individuals taking H2 blockers are: 1  Bronchodilators (drugs that expand airways in the lungs) such as aminophylline, oxtriphylline or theophylline. 2  Anticoagulants (drugs that help prevent blood clots).
First-Generation H1 Histamine Receptor Blockers. H1 histamine receptors are found in smooth muscle cells throughout the body, and they lead to a traditional allergic reaction when histamine is bound to them. The first generation of histamine blockers, antihistamines, was developed to counteract the allergic symptoms. The most common example of a first-generation histamine blocker is diphenhydramine (Benadryl). It and other first-generation antihistamines have a documented side effect of extreme sedation.