{"id":211919,"date":"2025-05-05T12:03:45","date_gmt":"2025-05-05T12:03:45","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=211919"},"modified":"2025-05-05T12:03:47","modified_gmt":"2025-05-05T12:03:47","slug":"the-artery-lies-on-the-boundary-between-the-cortex-and-medulla-of-the-kidney","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/05\/05\/the-artery-lies-on-the-boundary-between-the-cortex-and-medulla-of-the-kidney\/","title":{"rendered":"The artery lies on the boundary between the cortex and medulla of the kidney"},"content":{"rendered":"\n<p>The artery lies on the boundary between the cortex and medulla of the kidney.<br>A) cortical radiate<br>B) arcuate<br>C) lobar<br>D) interlobar<\/p>\n\n\n\n<p><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-6-color\"><strong>The correct answer and explanation is :<\/strong><\/mark><\/p>\n\n\n\n<p><strong>Correct Answer: B) Arcuate<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation (Approximately 300 Words):<\/h3>\n\n\n\n<p>The <strong>arcuate artery<\/strong> is the blood vessel that lies at the <strong>boundary between the cortex and medulla<\/strong> of the kidney.<\/p>\n\n\n\n<p>To understand this, it&#8217;s helpful to review the vascular anatomy of the kidney:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Renal Artery<\/strong>: Blood enters the kidney via the renal artery, which branches from the abdominal aorta.<\/li>\n\n\n\n<li><strong>Segmental and Lobar Arteries<\/strong>: The renal artery first divides into segmental and then lobar arteries as it enters the renal hilum.<\/li>\n\n\n\n<li><strong>Interlobar Arteries<\/strong>: These branch from the lobar arteries and travel <strong>between the renal pyramids<\/strong>, through the <strong>renal columns<\/strong>, toward the cortex.<\/li>\n\n\n\n<li><strong>Arcuate Arteries<\/strong>: At the <strong>corticomedullary junction<\/strong>\u2014the boundary between the cortex and medulla\u2014the interlobar arteries <strong>arch over the bases of the renal pyramids<\/strong>. These arching vessels are the <strong>arcuate arteries<\/strong>, which run <strong>perpendicular<\/strong> to the interlobar arteries.<\/li>\n\n\n\n<li><strong>Cortical Radiate (Interlobular) Arteries<\/strong>: Branching off from the arcuate arteries, these extend <strong>up into the cortex<\/strong>, supplying glomeruli and other cortical structures.<\/li>\n<\/ol>\n\n\n\n<p>The positioning of the arcuate arteries at the base of the renal pyramids places them <strong>exactly at the interface between the cortex and medulla<\/strong>, which is crucial for renal perfusion. This strategic location allows the arcuate arteries to serve as a vascular platform for delivering blood to the superficial cortex via the cortical radiate arteries and indirectly to the medulla via the vasa recta, which descend from efferent arterioles.<\/p>\n\n\n\n<p>Other options:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Cortical radiate arteries (A)<\/strong>: Located within the <strong>cortex<\/strong>, not at the boundary.<\/li>\n\n\n\n<li><strong>Lobar arteries (C)<\/strong>: Located <strong>deeper<\/strong>, near the renal pelvis and medulla.<\/li>\n\n\n\n<li><strong>Interlobar arteries (D)<\/strong>: Run <strong>between pyramids<\/strong>, not on the boundary.<\/li>\n<\/ul>\n\n\n\n<p>Thus, the <strong>arcuate artery (B)<\/strong> is the correct answer due to its distinct position at the <strong>cortico-medullary junction<\/strong>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The artery lies on the boundary between the cortex and medulla of the kidney.A) cortical radiateB) arcuateC) lobarD) interlobar The correct answer and explanation is : Correct Answer: B) Arcuate Explanation (Approximately 300 Words): The arcuate artery is the blood vessel that lies at the boundary between the cortex and medulla of the kidney. To [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-211919","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/211919","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=211919"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/211919\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=211919"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=211919"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=211919"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}