{"id":18456,"date":"2025-06-13T00:02:44","date_gmt":"2025-06-13T00:02:44","guid":{"rendered":"https:\/\/gaviki.com\/blog\/?p=18456"},"modified":"2025-06-13T00:02:55","modified_gmt":"2025-06-13T00:02:55","slug":"an-especially-leaky-type-of-capillary-found-in-the-liver-and-certain-other-tissues-is-called-a-__","status":"publish","type":"post","link":"https:\/\/gaviki.com\/blog\/an-especially-leaky-type-of-capillary-found-in-the-liver-and-certain-other-tissues-is-called-a-__\/","title":{"rendered":"An especially leaky type of capillary found in the liver and certain other tissues is called a __"},"content":{"rendered":"\n<p>An especially leaky type of capillary found in the liver and certain other tissues is called a <strong><em>__<\/em><\/strong>. a. capillary bed b. fenestrated capillary c. sinusoid capillary d. metarteriole<\/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>The correct answer is <strong>c. sinusoid capillary<\/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:<\/h3>\n\n\n\n<p><strong>Sinusoid capillaries<\/strong>, also called <strong>sinusoids<\/strong>, are a specialized type of capillary that is particularly leaky and found in certain tissues such as the liver, spleen, bone marrow, and adrenal glands. They have large gaps or fenestrations in their endothelial lining, as well as an incomplete or absent basement membrane. This structure allows for the free exchange of large molecules, cells, and fluids between the blood and surrounding tissues.<\/p>\n\n\n\n<p>Here\u2019s why sinusoid capillaries are unique and important:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Highly permeable walls:<\/strong> Unlike continuous or fenestrated capillaries, sinusoid capillaries have large intercellular gaps and fenestrations that permit not only the passage of fluids and small molecules but also the movement of large plasma proteins and even cells such as red blood cells and white blood cells.<\/li>\n\n\n\n<li><strong>Location in the liver:<\/strong> In the liver, sinusoids facilitate the exchange of substances between the blood and hepatocytes (liver cells). This is essential for the liver\u2019s functions such as detoxification, metabolism, and synthesis of plasma proteins.<\/li>\n\n\n\n<li><strong>Role in bone marrow and spleen:<\/strong> In bone marrow, sinusoids allow newly formed blood cells to enter the circulation. In the spleen, they help filter blood and remove old or damaged red blood cells.<\/li>\n\n\n\n<li><strong>Structural features:<\/strong> Sinusoids have a discontinuous endothelium and an incomplete or absent basal lamina (basement membrane), which contribute to their leakiness.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Why other options are incorrect:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>a. Capillary bed:<\/strong> This term refers to a network of capillaries supplying a particular tissue but does not specify a type of capillary.<\/li>\n\n\n\n<li><strong>b. Fenestrated capillary:<\/strong> These have small pores (fenestrations) in their endothelial lining and are found in organs where rapid exchange of small molecules occurs (e.g., kidneys, intestines), but their pores are smaller than in sinusoids and they are less permeable.<\/li>\n\n\n\n<li><strong>d. Metarteriole:<\/strong> This is a vessel that links arterioles to capillaries and functions as a thoroughfare channel but is not a type of capillary itself.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>In summary, the <strong>sinusoid capillary<\/strong> is the especially leaky capillary type found in the liver and certain other organs, optimized for maximal exchange of substances between blood and tissue.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>An especially leaky type of capillary found in the liver and certain other tissues is called a __. a. capillary bed b. fenestrated capillary c. sinusoid capillary d. metarteriole The correct answer and explanation is: The correct answer is c. sinusoid capillary. Explanation: Sinusoid capillaries, also called sinusoids, are a specialized type of capillary 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-18456","post","type-post","status-publish","format-standard","hentry","category-quiz-questions"],"_links":{"self":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/18456","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=18456"}],"version-history":[{"count":1,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/18456\/revisions"}],"predecessor-version":[{"id":18457,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/18456\/revisions\/18457"}],"wp:attachment":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/media?parent=18456"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/categories?post=18456"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/tags?post=18456"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}