| 单词 | beta receptor | |||
| 释义 | beta receptorbe′ta recep`toror be′ta-recep`tor,n.
beta receptorbeta receptorA trio of G protein-coupled cell membrane receptors in the sympathetic nervous system, which dampen the response to catecholamines. They are divided into Beta-1, -2 and -3 receptors.Beta-1 receptor increases cardiac output by raising the heart rate, impulse conduction, and contraction, thereby increasing the left ventricular ejection fraction; increases juxtaglomerular renin secretion; increases gastric secretion of ghrelin (the hunger hormone, which contrasts to leptin, the satiation hormone). Beta-2 receptor prompts smooth muscle relaxation resulting in bronchodilation; reduced GI motility; relaxation of detrusor muscle of the bladder; glycogenolysis and gluconeogenesis; and increased renin secretion. Beta-3 receptor increases lipolysis in fat and thermogenesis in skeletal muscle. beta receptor
Synonyms for beta receptor
|
|||
| 随便看 |
|
英语词典包含2567994条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。
beta receptor - receptors postulated to exist on nerve cell membranes of the sympathetic nervous system in order to explain the specificity of certain agents that affect only some sympathetic activities (such as vasodilation and increased heart beat)