<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"
        xmlns:xhtml="http://www.w3.org/1999/xhtml"
        xmlns:video="http://www.google.com/schemas/sitemap-video/1.1"
        xmlns:image="http://www.google.com/schemas/sitemap-image/1.1">
    
    <url>
        <loc>https://www.khanacademy.org/science/health-and-medicine/circulatory-system/circulatory-system-introduction/v/meet-the-heart</loc>
        
        <xhtml:link rel="alternate" hreflang="bg"
                    href="https://bg.khanacademy.org/science/health-and-medicine/circulatory-system/circulatory-system-introduction/v/meet-the-heart" />
        
        <xhtml:link rel="alternate" hreflang="en"
                    href="https://www.khanacademy.org/science/health-and-medicine/circulatory-system/circulatory-system-introduction/v/meet-the-heart" />
        
        <xhtml:link rel="alternate" hreflang="es"
                    href="https://es.khanacademy.org/science/high-school-biology/hs-human-body-systems/hs-the-circulatory-and-respiratory-systems/v/meet-the-heart" />
        
        <xhtml:link rel="alternate" hreflang="fr"
                    href="https://fr.khanacademy.org/science/biologie-a-l-ecole/x5047ff3843d876a6:1er-degre-sciences-de-base/x5047ff3843d876a6:bio-1er-degre-les-systemes-circulatoire-et-pulmonaire/v/meet-the-heart" />
        
        <xhtml:link rel="alternate" hreflang="gu"
                    href="https://gu.khanacademy.org/science/class-10-biology/in-in-life-processes/in-in-transportation-in-human-beings/v/meet-the-heart" />
        
        <xhtml:link rel="alternate" hreflang="hi"
                    href="https://hi.khanacademy.org/science/up-class-11th-biology/x6cdb38ba1d131d88:body-fluids-and-circulation/x6cdb38ba1d131d88:circulatory-pathways/v/meet-the-heart" />
        
        <xhtml:link rel="alternate" hreflang="ka"
                    href="https://ka.khanacademy.org/science/high-school-biology/hs-human-body-systems/hs-the-circulatory-and-respiratory-systems/v/meet-the-heart" />
        
        <xhtml:link rel="alternate" hreflang="kk"
                    href="https://kk.khanacademy.org/science/high-school-biology/hs-human-body-systems/hs-the-circulatory-and-respiratory-systems/v/meet-the-heart" />
        
        <xhtml:link rel="alternate" hreflang="pl"
                    href="https://pl.khanacademy.org/science/health-and-medicine/circulatory-system/circulatory-system-introduction/v/meet-the-heart" />
        
        <xhtml:link rel="alternate" hreflang="pt"
                    href="https://pt.khanacademy.org/science/health-and-medicine/circulatory-system/circulatory-system-introduction/v/meet-the-heart" />
        
        <xhtml:link rel="alternate" hreflang="ro"
                    href="https://ro.khanacademy.org/science/biblioteca-de-biologie/xc76f745e7114d1c5:biologie-umana/xc76f745e7114d1c5:sistemul-circulator-si-sistemul-respirator/v/meet-the-heart" />
        
        <xhtml:link rel="alternate" hreflang="tr"
                    href="https://tr.khanacademy.org/science/11-sinif-biyoloji/x722d9bbb3b96afb7:1-unite-insan-fizyolojisi/x722d9bbb3b96afb7:dolasim-sistemi/v/meet-the-heart" />
        
        <xhtml:link rel="alternate" hreflang="uk"
                    href="https://uk.khanacademy.org/science/hs-bio/x230b3ff252126bb6:from-cells-to-organisms/x230b3ff252126bb6:human-body-systems/v/meet-the-heart" />
        
        <xhtml:link rel="alternate" hreflang="ur"
                    href="https://ur.khanacademy.org/science/grade-7-science-snc-aligned/x64f379bc07a3640a:human-respiratory-and-circulatory-system/x64f379bc07a3640a:blood-circulation/v/meet-the-heart" />
        
        <xhtml:link rel="alternate" hreflang="zh-hans"
                    href="https://zh.khanacademy.org/science/health-and-medicine/circulatory-system/circulatory-system-introduction/v/meet-the-heart" />
        
        <lastmod>2024-04-04T15:34:20.714536152Z</lastmod>
        
        <PageMap xmlns="http://www.google.com/schemas/sitemap-pagemap/1.0">
            <DataObject type="document" id="meet-the-heart">
            <Attribute name="title">Meet the heart!</Attribute>
            <Attribute name="description">The heart, nestled between the lungs and protected by the rib cage, serves as a powerful pump ensuring blood flow throughout the body. This systemic flow delivers oxygen and nutrients to cells and removes waste. Additionally, the heart manages pulmonary flow, sending blood to the lungs for oxygenation before distributing it to the body. Lastly, the heart&#39;s own cells are nourished by coronary blood vessels, part of the systemic flow.</Attribute>
            <Attribute name="author">Rishi Desai</Attribute>
            <Attribute name="type">video</Attribute>
            
            </DataObject>
        </PageMap>
        
        <video:video>
            <video:thumbnail_loc>https://cdn.kastatic.org/ka_thumbnails_cache/788d62ac-0d84-48ee-a35f-2b21e850a2b1_1280_720_base.png</video:thumbnail_loc>
            <video:title>Meet the heart!</video:title>
            <video:description>The heart, nestled between the lungs and protected by the rib cage, serves as a powerful pump ensuring blood flow throughout the body. This systemic flow delivers oxygen and nutrients to cells and removes waste. Additionally, the heart manages pulmonary flow, sending blood to the lungs for oxygenation before distributing it to the body. Lastly, the heart&#39;s own cells are nourished by coronary blood vessels, part of the systemic flow.</video:description>
            <video:player_loc>https://cdn.kastatic.org/ka-youtube-converted/Vi1JK6IYVt8.mp4/Vi1JK6IYVt8.mp4</video:player_loc>
            <video:duration>609</video:duration>
            <video:category>Transport in Animals and Plants</video:category>
        </video:video>
        
    </url>
    
    <url>
        <loc>https://www.khanacademy.org/science/health-and-medicine/circulatory-system/blood-vessels/v/arteries-vs-veins-what-s-the-difference</loc>
        
        <xhtml:link rel="alternate" hreflang="bg"
                    href="https://bg.khanacademy.org/science/health-and-medicine/circulatory-system/blood-vessels/v/arteries-vs-veins-what-s-the-difference" />
        
        <xhtml:link rel="alternate" hreflang="de"
                    href="https://de.khanacademy.org/science/health-and-medicine/circulatory-system-diseases/blood-vessel-diseases/v/arteries-vs-veins-what-s-the-difference" />
        
        <xhtml:link rel="alternate" hreflang="en"
                    href="https://www.khanacademy.org/science/health-and-medicine/circulatory-system/blood-vessels/v/arteries-vs-veins-what-s-the-difference" />
        
        <xhtml:link rel="alternate" hreflang="es"
                    href="https://es.khanacademy.org/science/biologia-pe-pre-u/x512768f0ece18a57:digestion-intracelular-extracelular-quimica-y-mecanica/x512768f0ece18a57:sistema-circulatorio-humano-organos-y-fisiologia/v/arteries-vs-veins-what-s-the-difference" />
        
        <xhtml:link rel="alternate" hreflang="gu"
                    href="https://gu.khanacademy.org/science/class-10-biology/in-in-life-processes/in-in-transportation-in-human-beings/v/arteries-vs-veins-what-s-the-difference" />
        
        <xhtml:link rel="alternate" hreflang="hi"
                    href="https://hi.khanacademy.org/science/in-in-class-10-biology/in-in-life-processes/in-in-transportation-in-human-beings/v/arteries-vs-veins-what-s-the-difference" />
        
        <xhtml:link rel="alternate" hreflang="pl"
                    href="https://pl.khanacademy.org/science/health-and-medicine/circulatory-system-diseases/blood-vessel-diseases/v/arteries-vs-veins-what-s-the-difference" />
        
        <xhtml:link rel="alternate" hreflang="pt"
                    href="https://pt.khanacademy.org/science/health-and-medicine/circulatory-system-diseases/blood-vessel-diseases/v/arteries-vs-veins-what-s-the-difference" />
        
        <xhtml:link rel="alternate" hreflang="tr"
                    href="https://tr.khanacademy.org/science/11-sinif-biyoloji/x722d9bbb3b96afb7:1-unite-insan-fizyolojisi/x722d9bbb3b96afb7:dolasim-sistemi/v/arteries-vs-veins-what-s-the-difference" />
        
        <xhtml:link rel="alternate" hreflang="zh-hans"
                    href="https://zh.khanacademy.org/science/health-and-medicine/circulatory-system/circulatory-system-introduction/v/arteries-vs-veins-what-s-the-difference" />
        
        <lastmod>2023-09-10T17:11:17.624018169Z</lastmod>
        
        <PageMap xmlns="http://www.google.com/schemas/sitemap-pagemap/1.0">
            <DataObject type="document" id="arteries-vs-veins-what-s-the-difference">
            <Attribute name="title">Arteries vs. veins - what&#39;s the difference?</Attribute>
            <Attribute name="description">Explore the roles of arteries and veins in the circulatory system. Uncover common misconceptions about oxygenated and deoxygenated blood, and learn the true distinction: arteries carry blood away from the heart, while veins transport blood towards the heart. Delve into the high-pressure nature of arteries and the low-pressure, high-volume characteristics of veins.</Attribute>
            <Attribute name="author">Rishi Desai</Attribute>
            <Attribute name="type">video</Attribute>
            
            </DataObject>
        </PageMap>
        
        <video:video>
            <video:thumbnail_loc>https://cdn.kastatic.org/googleusercontent/x2Vu8mDkRGVuCk7yG7tz8kKSROmZuOQ0BQtmxuIV3PM8BZLr_r1Aygs2JLAhiuV_8WXT_XPSDdR4eHmqW6_TO5ffIQ</video:thumbnail_loc>
            <video:title>Arteries vs. veins - what&#39;s the difference?</video:title>
            <video:description>Explore the roles of arteries and veins in the circulatory system. Uncover common misconceptions about oxygenated and deoxygenated blood, and learn the true distinction: arteries carry blood away from the heart, while veins transport blood towards the heart. Delve into the high-pressure nature of arteries and the low-pressure, high-volume characteristics of veins.</video:description>
            <video:player_loc>https://cdn.kastatic.org/ka-youtube-converted/lXkfZYlnwl4.mp4/lXkfZYlnwl4.mp4</video:player_loc>
            <video:duration>464</video:duration>
            <video:category>Transport in Animals and Plants</video:category>
        </video:video>
        
    </url>
    
    <url>
        <loc>https://www.khanacademy.org/science/bridge-course-class-10th-science/x37589313f9a4c197:untitled-78/x37589313f9a4c197:transportation/e/transport-in-animals</loc>
        
        <xhtml:link rel="alternate" hreflang="en"
                    href="https://www.khanacademy.org/science/bridge-course-class-10th-science/x37589313f9a4c197:untitled-78/x37589313f9a4c197:transportation/e/transport-in-animals" />
        
        <xhtml:link rel="alternate" hreflang="hi"
                    href="https://hi.khanacademy.org/science/bridge-course-class-10th-science/x37589313f9a4c197:week-2/x37589313f9a4c197:life-processes/e/transport-in-animals" />
        
        <xhtml:link rel="alternate" hreflang="or"
                    href="https://or.khanacademy.org/science/bridge-course-class-10th-science/x37589313f9a4c197:untitled-78/x37589313f9a4c197:transportation/e/transport-in-animals" />
        
        <xhtml:link rel="alternate" hreflang="pa"
                    href="https://pa.khanacademy.org/science/punjab-class-7th-science/x3035043318fd03f4:transport-in-animals-and-plants/x3035043318fd03f4:circulatory-system-of-animals/e/transport-in-animals" />
        
        <xhtml:link rel="alternate" hreflang="ur"
                    href="https://ur.khanacademy.org/science/grade-7-science-snc-aligned/x64f379bc07a3640a:human-respiratory-and-circulatory-system/x64f379bc07a3640a:blood-vessels/e/transport-in-animals" />
        
        <lastmod>2026-04-07T23:36:17.218592739Z</lastmod>
        
        <PageMap xmlns="http://www.google.com/schemas/sitemap-pagemap/1.0">
            <DataObject type="document" id="transport-in-animals">
            <Attribute name="title">Vessels and Heart</Attribute>
            <Attribute name="description">Let&#39;s solve some questions on Vessels and Heart</Attribute>
            <Attribute name="author">Vibhor Pandey</Attribute>
            <Attribute name="type">exercise</Attribute>
            
            </DataObject>
        </PageMap>
        
    </url>
    
    <url>
        <loc>https://www.khanacademy.org/science/in-in-class-10-biology/in-in-life-processes/in-in-transportation-in-plants/v/intro-to-vascular-tissues-xylem-phloem-life-processes-biology-khan-academy</loc>
        
        <xhtml:link rel="alternate" hreflang="en"
                    href="https://www.khanacademy.org/science/in-in-class-10-biology/in-in-life-processes/in-in-transportation-in-plants/v/intro-to-vascular-tissues-xylem-phloem-life-processes-biology-khan-academy" />
        
        <xhtml:link rel="alternate" hreflang="gu"
                    href="https://gu.khanacademy.org/science/class-10-biology/in-in-life-processes/in-in-transportation-in-plants/v/intro-to-vascular-tissues-xylem-phloem-life-processes-biology-khan-academy" />
        
        <xhtml:link rel="alternate" hreflang="hi"
                    href="https://hi.khanacademy.org/science/ncert-class-7-science/xcdd360a2d881eb3c:nutrition-in-plants/xcdd360a2d881eb3c:transport-in-plants/v/intro-to-vascular-tissues-xylem-phloem-life-processes-biology-khan-academy" />
        
        <xhtml:link rel="alternate" hreflang="or"
                    href="https://or.khanacademy.org/science/odia-class-10-life-sciencesinnew/x50a34472af8d481d:transportation-and-circulation/x50a34472af8d481d:transportation-in-plants/v/intro-to-vascular-tissues-xylem-phloem-life-processes-biology-khan-academy" />
        
        <xhtml:link rel="alternate" hreflang="te"
                    href="https://te.khanacademy.org/science/telangana-class-10-biologyin/x58e314ef7f27e124:transportation-and-circulation/x58e314ef7f27e124:transportation-in-plants/v/intro-to-vascular-tissues-xylem-phloem-life-processes-biology-khan-academy" />
        
        <xhtml:link rel="alternate" hreflang="tr"
                    href="https://tr.khanacademy.org/science/in-in-class-10-biology/in-in-life-processes/in-in-transportation-in-plants/v/intro-to-vascular-tissues-xylem-phloem-life-processes-biology-khan-academy" />
        
        <xhtml:link rel="alternate" hreflang="ur"
                    href="https://ur.khanacademy.org/science/grade-7-science/xa9c5124c69e541e2:plant-systems/xa9c5124c69e541e2:transport-of-water-and-minerals-in-plants/v/intro-to-vascular-tissues-xylem-phloem-life-processes-biology-khan-academy" />
        
        <lastmod>2020-08-28T13:57:04Z</lastmod>
        
        <PageMap xmlns="http://www.google.com/schemas/sitemap-pagemap/1.0">
            <DataObject type="document" id="intro-to-vascular-tissues-xylem-phloem-life-processes-biology-khan-academy">
            <Attribute name="title">Intro to vascular tissues (xylem &amp; phloem)</Attribute>
            <Attribute name="description">Let&#39;s explore xylem and phloem (transport in plants)</Attribute>
            <Attribute name="author">Mahesh Shenoy</Attribute>
            <Attribute name="type">video</Attribute>
            
            </DataObject>
        </PageMap>
        
        <video:video>
            <video:thumbnail_loc>https://cdn.kastatic.org/googleusercontent/8ynNildZCK9RD4q8Qw_UChIWrSQTAQwLYoKKJlLwoT_f7BP18PRNOBlQSjz3YJxILfvR59mIqYPu1m_x-WOLnG-J</video:thumbnail_loc>
            <video:title>Intro to vascular tissues (xylem &amp; phloem)</video:title>
            <video:description>Let&#39;s explore xylem and phloem (transport in plants)</video:description>
            <video:player_loc>https://cdn.kastatic.org/ka-youtube-converted/AYyPlvdcMEY.mp4/AYyPlvdcMEY.mp4</video:player_loc>
            <video:duration>660</video:duration>
            <video:category>Transport in Animals and Plants</video:category>
        </video:video>
        
    </url>
    
    <url>
        <loc>https://www.khanacademy.org/science/bridge-course-class-10th-science/x37589313f9a4c197:untitled-78/x37589313f9a4c197:transportation/e/transport-in-plants</loc>
        
        <xhtml:link rel="alternate" hreflang="en"
                    href="https://www.khanacademy.org/science/bridge-course-class-10th-science/x37589313f9a4c197:untitled-78/x37589313f9a4c197:transportation/e/transport-in-plants" />
        
        <xhtml:link rel="alternate" hreflang="hi"
                    href="https://hi.khanacademy.org/science/bridge-course-class-10th-science/x37589313f9a4c197:week-2/x37589313f9a4c197:life-processes/e/transport-in-plants" />
        
        <xhtml:link rel="alternate" hreflang="or"
                    href="https://or.khanacademy.org/science/bridge-course-class-10th-science/x37589313f9a4c197:untitled-78/x37589313f9a4c197:transportation/e/transport-in-plants" />
        
        <xhtml:link rel="alternate" hreflang="pa"
                    href="https://pa.khanacademy.org/science/punjab-class-7th-science/x3035043318fd03f4:transport-in-animals-and-plants/x3035043318fd03f4:transport-in-plants/e/transport-in-plants" />
        
        <lastmod>2025-07-26T09:16:06.981599176Z</lastmod>
        
        <PageMap xmlns="http://www.google.com/schemas/sitemap-pagemap/1.0">
            <DataObject type="document" id="transport-in-plants">
            <Attribute name="title">Transport in plants</Attribute>
            <Attribute name="description">Let&#39;s solve some questions on transport in plants</Attribute>
            <Attribute name="author">Vibhor Pandey</Attribute>
            <Attribute name="type">exercise</Attribute>
            
            </DataObject>
        </PageMap>
        
    </url>
    
</urlset>
