{"version":"1.0","provider_name":"Stretch Well","provider_url":"https:\/\/stretch-well.com\/en\/","title":"Muscle physiology | Stretch Well","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"vg6COgVmAv\"><a href=\"https:\/\/stretch-well.com\/en\/blog\/muscle-physiology\/\">Muscle physiology<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/stretch-well.com\/en\/blog\/muscle-physiology\/embed\/#?secret=vg6COgVmAv\" width=\"600\" height=\"338\" title=\"&#8220;Muscle physiology&#8221; &#8212; Stretch Well\" data-secret=\"vg6COgVmAv\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!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);\n\/\/# sourceURL=https:\/\/stretch-well.com\/wp-includes\/js\/wp-embed.min.js\n<\/script>\n","thumbnail_url":"https:\/\/stretch-well.com\/wp-content\/uploads\/2026\/02\/Fiziologija-misica-1536x1536.png.webp","thumbnail_width":1536,"thumbnail_height":1536,"description":"The main functional function of muscle tissue (whether it is striated or smooth, white or red) is its excitability. This irritability is most often manifested by shortening, spasm (contraction) of muscle fibers, which occurs under the action of external or internal stimuli.Under normal conditions, the natural stimuli for the contraction of human muscles are impulses [&hellip;]"}