托福阅读材料之肺部能发觉苦味

《托福阅读材料之肺部能发觉苦味》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、智课网TOEFL备考资料托福阅读材料之肺部能发觉苦味您当前的位置»智课教育官网»托福»托福阅读»文章正文出国英语考试有哪些雅思6.5是什么水平雅思阅读评分标准托福阅读评分标准雅思和托福的区别肺部肌肉“品尝”苦味功能Takeadeepbreath.Tasteanything?Actually,yourlungsmay.Becausescientistshavediscoveredthatthesamereceptorsthatexistonthetonguetotastebittersubstancesarealsofoundonthesmoothmuscleofthelungs.Resea

2、rcherswerestudyingthereceptorsonsmoothlungmusclesthatregulatecontractionandrelaxationoftheairways.That’swhentheymadethediscovery—whichwassounexpectedthattheresearchersthemselveswereskeptical.Finally,theybecameconvincedthatthereceptorswerereallythere,thoughnotclusteredintastebudsastheyareonthetongu

3、e.Thescientiststhenexposedhumanandmouseairwaystovariousbittercompoundstogaugetheeffects.Manytoxiccompoundsarebitter,sotheresearchersexpectedthelungmuscletotenseupandcontract—tocompelthebreathertomoveawayfromwhateverwasbitterandperhapstoxic.But,inasecondsurprise,bittercompoundsrelaxedandopenedairwa

4、ysbetterthananyexistingasthmadrug.ThestudyisinthejournalNatureMedicine.[DeepakDeshpandeetal.,"Bittertastereceptorsonairwaysmoothmusclebronchodilatebylocalizedcalciumsignalingandreverseobstruction"]Researcherswillcontinuetosearchfortheroleofthereceptors.Meanwhile,theworkrepresentsasurprisingnewlead

5、inthesearchfordrugstotreatasthma,emphysemaorchronicbronchitis.—CynthiaGraber以上就是智课教育托福频道为大家整理的托福阅读材料之肺部能发觉苦味，希望对大家有帮助，更多资讯、资料请访问智课教育托福阅读频道