{"id":781,"date":"2017-05-24T21:29:53","date_gmt":"2017-05-25T00:29:53","guid":{"rendered":"http:\/\/en-mol.icb.usp.br\/?page_id=781"},"modified":"2026-03-24T16:39:03","modified_gmt":"2026-03-24T19:39:03","slug":"2-15-covering-epithelia","status":"publish","type":"page","link":"https:\/\/mol-en.icb.usp.br\/index.php\/2-15-covering-epithelia\/","title":{"rendered":"2-15 Covering epithelia"},"content":{"rendered":"<div class=\"su-row\">\n  <div class=\"su-column su-column-size-1-1\"><div class=\"su-column-inner su-u-clearfix su-u-trim\"> <strong>A STRATIFIED EPITHELIUM<\/strong>  <\/div><\/div>\n<\/div>\n<div class=\"su-row\">\n  <div class=\"su-column su-column-size-1-2\"><div class=\"su-column-inner su-u-clearfix su-u-trim\">\nA stratified cuboidal\/columnar epithelium<br \/>\nThe stratified epithelia are formed by two or more layers of cells.<br \/>\nThe image: an <strong>excretory duct of a salivary gland<\/strong>. This duct has been sectioned longitudinally and runs horizontally in the figure. Inside the duct, that is, inside its <strong>lumen<\/strong>, observe a homogeneous acidophilic substance stained in light pink &#8211; this is the secretory product of the gland being transported along the duct.<\/p>\n<p>This is a large duct formed by the junction of several smaller, thinner excretory ducts. The wall of the smaller excretory ducts is a single layer of cells, a simple cubic epithelium. As the duct enlarges, the epithelium is replaced by a simple columnar epithelium. In even larger ducts, such as the one shown in the image, the epithelium of the duct becomes stratified.<br \/>\nThe wall of the duct shown in the figure is made up of <strong>two layers of cells<\/strong>.<br \/>\nThe inner layer, close to the basement membrane, is made of <strong>cuboidal cells<\/strong>, whose nuclei are indicated in light blue after using the mouse or clicking. The upper layer of the epithelium is formed by <strong>columnar cells<\/strong> whose nuclei will appear in dark blue. This epithelium is stratified cuboidal-columnar.<\/p>\n<\/div><\/div>\n  <div class=\"su-column su-column-size-1-2\"><div class=\"su-column-inner su-u-clearfix su-u-trim\"> <\/p>\n<div onclick>\n<div class=\"image-container\">\n<div class=\"extra\">\n<a href=\"javascript:void(0)\"><br \/>\n  <img decoding=\"async\" src=\"https:\/\/mol-en.icb.usp.br\/wp-content\/uploads\/2-18.jpg\"\n       class=\"hover-image\"\n       data-original-src=\"https:\/\/mol-en.icb.usp.br\/wp-content\/uploads\/2-18.jpg\"\n       data-hover-src=\"https:\/\/mol-en.icb.usp.br\/wp-content\/uploads\/2-18MO.jpg\" \/><br \/>\n<\/a><\/p>\n<p>Duct of salivary gland. Hematoxylin and eosin. Medium magnification.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/mol-en.icb.usp.br\/wp-content\/uploads\/mouse-1.gif\"\/><\/a><\/p>\n<div onclick=\"\">\n<p><a href=https:\/\/mol-en.icb.usp.br\/index.php\/2-16-covering-epithelia\/\">NEXT PAGE<\/a><\/p>\n<p><a href=https:\/\/mol-en.icb.usp.br\/index.php\/2-14-covering-epithelia\/\">PREVIOUS PAGE <\/a><\/p>\n<p><a href=https:\/\/mol-en.icb.usp.br\/index.php\/2-0-epithelial-tissue\/\">MENU OF THIS CHAPTER<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n<p><\/body><br \/>\n<\/html> <\/div><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-781","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/mol-en.icb.usp.br\/index.php\/wp-json\/wp\/v2\/pages\/781","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mol-en.icb.usp.br\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/mol-en.icb.usp.br\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/mol-en.icb.usp.br\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/mol-en.icb.usp.br\/index.php\/wp-json\/wp\/v2\/comments?post=781"}],"version-history":[{"count":24,"href":"https:\/\/mol-en.icb.usp.br\/index.php\/wp-json\/wp\/v2\/pages\/781\/revisions"}],"predecessor-version":[{"id":21323,"href":"https:\/\/mol-en.icb.usp.br\/index.php\/wp-json\/wp\/v2\/pages\/781\/revisions\/21323"}],"wp:attachment":[{"href":"https:\/\/mol-en.icb.usp.br\/index.php\/wp-json\/wp\/v2\/media?parent=781"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}