Asetylkoliini ja sen reseptori ja hermosynapsi. Kuva

http://www.google.se/imgres?imgurl=http://www.bio12.com/ch17/IBNervous/achsynapse.jpg&imgrefurl=http://www.bio12.com/ch17/IBNervous/OpE7.htm&usg=__oWHNDkO-9t_vi_kfCfhbqwWjTgk=&h=402&w=387&sz=60&hl=sv&start=0&zoom=1&tbnid=g-rbwalI4C4QTM:&tbnh=160&tbnw=154&ei=cBEiTsH3J8nZsga4vYn-AQ&prev=/search%3Fq%3Dcholinergic%2Bneurons%26um%3D1%26hl%3Dsv%26sa%3DN%26biw%3D1584%26bih%3D818%26tbm%3Disch&um=1&itbs=1&iact=hc&vpx=424&vpy=249&dur=1679&hovh=229&hovw=220&tx=105&ty=116&page=1&ndsp=29&ved=1t:429,r:8,s:0