1.0Museo de Ecología Humanahttps://museoecologiahumana.org/en/rich600338<blockquote class="wp-embedded-content" data-secret="1L26JbfO54"><a href="https://museoecologiahumana.org/en/obras/sex-cells-and-embryos/">Sex cells and embryos</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://museoecologiahumana.org/en/obras/sex-cells-and-embryos/embed/#?secret=1L26JbfO54" width="600" height="338" title="“Sex cells and embryos” — Museo de Ecología Humana" data-secret="1L26JbfO54" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript"> /* <![CDATA[ */ /*! 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://museoecologiahumana.org/wp-includes/js/wp-embed.min.js /* ]]> */ </script> https://museoecologiahumana.org/wp-content/uploads/2020/09/S2.G1.2-ok.jpg610352During the 17th and 18th centuries, descriptive anatomical studies continued, with most of the work being done on fetuses in the last trimester of pregnancy (last three months). The fetus of this age is of unmistakable human appearance so these studies failed to appreciate the physical changes that take place earlier in prenatal life. Some... View Article