{"id":28646,"date":"2025-06-20T14:10:21","date_gmt":"2025-06-20T14:10:21","guid":{"rendered":"https:\/\/gaviki.com\/blog\/?p=28646"},"modified":"2025-06-20T14:10:26","modified_gmt":"2025-06-20T14:10:26","slug":"cells-of-gastric-glands-secrete-two-substances-necessary-for-the-active-pepsin","status":"publish","type":"post","link":"https:\/\/gaviki.com\/blog\/cells-of-gastric-glands-secrete-two-substances-necessary-for-the-active-pepsin\/","title":{"rendered":"Cells of gastric glands secrete two substances necessary for the active pepsin"},"content":{"rendered":"\n<p>Cells of gastric glands secrete two substances necessary for the active pepsin<\/p>\n\n\n\n<p><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\"><strong>The correct answer and explanation is:<\/strong><\/mark><\/p>\n\n\n\n<p><strong>Correct Answer:<\/strong><br>The cells of the gastric glands secrete <strong>pepsinogen<\/strong> and <strong>hydrochloric acid (HCl)<\/strong>, which are necessary for the active form of pepsin.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation:<\/h3>\n\n\n\n<p>The gastric glands in the stomach lining contain different types of specialized cells that produce substances essential for digestion, particularly protein digestion.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Pepsinogen secretion by Chief Cells:<\/strong><br>Chief cells (also called zymogenic cells) in the gastric glands secrete <strong>pepsinogen<\/strong>, which is an inactive precursor (zymogen) of the enzyme pepsin. Pepsinogen itself is inactive to prevent the cells that produce it from being digested.<\/li>\n\n\n\n<li><strong>Hydrochloric acid secretion by Parietal Cells:<\/strong><br>Parietal cells in the gastric glands secrete <strong>hydrochloric acid (HCl)<\/strong> into the stomach lumen. This acid has multiple critical roles:<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>It creates an acidic environment in the stomach with a very low pH (around 1.5 to 3.5).<\/li>\n\n\n\n<li>The acidic pH is necessary to convert pepsinogen into its active form, <strong>pepsin<\/strong>. This conversion is an example of an activation by cleavage: HCl causes pepsinogen to unfold and cleave itself to form active pepsin.<\/li>\n\n\n\n<li>HCl also helps denature dietary proteins, making them easier targets for enzymatic digestion.<\/li>\n\n\n\n<li>It kills many microorganisms ingested with food, acting as a defense mechanism.<\/li>\n<\/ul>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>Pepsin Function:<\/strong><br>Once activated, <strong>pepsin<\/strong> is a protease enzyme that breaks down proteins into smaller peptides, aiding in their digestion and absorption later in the intestines.<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Summary:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Pepsinogen<\/strong> (from chief cells) + <strong>HCl<\/strong> (from parietal cells) \u2192 <strong>Active pepsin<\/strong><\/li>\n\n\n\n<li>Pepsin breaks down proteins in the stomach under acidic conditions.<\/li>\n\n\n\n<li>This process is essential for the digestive system to efficiently process dietary proteins.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>Understanding these cellular secretions helps explain how the stomach initiates protein digestion and protects itself from self-digestion by secreting enzymes in inactive forms until they reach the proper environment.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Cells of gastric glands secrete two substances necessary for the active pepsin The correct answer and explanation is: Correct Answer:The cells of the gastric glands secrete pepsinogen and hydrochloric acid (HCl), which are necessary for the active form of pepsin. Explanation: The gastric glands in the stomach lining contain different types of specialized cells that [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-28646","post","type-post","status-publish","format-standard","hentry","category-quiz-questions"],"_links":{"self":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/28646","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/comments?post=28646"}],"version-history":[{"count":1,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/28646\/revisions"}],"predecessor-version":[{"id":28647,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/28646\/revisions\/28647"}],"wp:attachment":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/media?parent=28646"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/categories?post=28646"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/tags?post=28646"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}