1.0Zuri A. Murrell, M.D.https://www.lacolonrectalsurgeon.com/blogstudio3https://www.lacolonrectalsurgeon.com/blog/author/studio3/rich600338<blockquote class="wp-embedded-content" data-secret="kadRjlm2cX"><a href="https://www.lacolonrectalsurgeon.com/blog/how-does-a-colonoscopy-work/">How Does a Colonoscopy Work?</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.lacolonrectalsurgeon.com/blog/how-does-a-colonoscopy-work/embed/#?secret=kadRjlm2cX" width="600" height="338" title="“How Does a Colonoscopy Work?” — Zuri A. Murrell, M.D." data-secret="kadRjlm2cX" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=https://www.lacolonrectalsurgeon.com/blog/wp-includes/js/wp-embed.min.js </script> https://www.lacolonrectalsurgeon.com/blog/wp-content/uploads/2026/07/iStock-2217548501-2.jpg1253836As a double board-certified colorectal surgeon and Director of the Colorectal Cancer Program at Cedars-Sinai, Dr. Zuri Murrell gets asked about colonoscopies almost every single day. Most people know they need one eventually, but very few actually know how the technology works behind the scenes. There is a lot of anxiety surrounding this exam, often … Continue reading →