{"id":18505,"date":"2025-06-13T00:32:31","date_gmt":"2025-06-13T00:32:31","guid":{"rendered":"https:\/\/gaviki.com\/blog\/?p=18505"},"modified":"2025-06-13T00:32:39","modified_gmt":"2025-06-13T00:32:39","slug":"a-healthy-elastic-artery-__","status":"publish","type":"post","link":"https:\/\/gaviki.com\/blog\/a-healthy-elastic-artery-__\/","title":{"rendered":"A healthy elastic artery __"},"content":{"rendered":"\n<p>A healthy elastic artery <strong><em>__<\/em><\/strong>. a. is compliant b. reduces blood flow c. is a resistance artery d. has a thin wall and irregular lumen<\/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>a. is compliant<\/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>Elastic arteries<\/strong> are large arteries close to the heart, such as the aorta and pulmonary arteries. Their primary role is to <strong>accommodate the surge of blood ejected from the heart during systole (ventricular contraction)<\/strong> and then help maintain continuous blood flow during diastole (ventricular relaxation). This unique function is made possible by their <strong>compliance<\/strong>, which means they can stretch easily when the blood pressure rises and then recoil when the pressure falls.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Why &#8220;compliant&#8221; is correct:<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Compliance<\/strong> refers to the ability of a blood vessel to expand and contract passively with changes in pressure. Elastic arteries have many elastic fibers in their walls, especially in the tunica media (the middle layer), allowing them to stretch when blood is pumped into them.<\/li>\n\n\n\n<li>During systole, the artery stretches to absorb some of the stroke volume and prevent a sudden spike in blood pressure.<\/li>\n\n\n\n<li>During diastole, the elastic recoil helps push the blood forward into the smaller arteries and capillaries, maintaining blood flow even when the heart is resting between beats.<\/li>\n\n\n\n<li>This function <strong>reduces the workload on the heart<\/strong> and <strong>helps smooth out the pulsatile output of blood<\/strong>, creating a steadier flow downstream.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Why the other options are incorrect:<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>b. reduces blood flow<\/strong>: Elastic arteries do not reduce blood flow; instead, they help maintain it by smoothing pulsatile pressure.<\/li>\n\n\n\n<li><strong>c. is a resistance artery<\/strong>: Resistance arteries are smaller muscular arteries and arterioles that regulate blood flow and pressure by constricting or dilating. Elastic arteries are not resistance arteries.<\/li>\n\n\n\n<li><strong>d. has a thin wall and irregular lumen<\/strong>: Elastic arteries have <strong>thick walls<\/strong> rich in elastic fibers and a <strong>regular, circular lumen<\/strong> to handle high pressure and volume. Thin walls and irregular lumen describe veins or pathological vessels, not elastic arteries.<\/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\">Summary:<\/h3>\n\n\n\n<p>Elastic arteries are <strong>compliant vessels<\/strong> that stretch to accommodate the blood ejected from the heart and recoil to maintain continuous blood flow. This compliance helps buffer the pressure changes during the cardiac cycle and supports efficient circulation. They are not resistance arteries, do not reduce blood flow, and have thick walls with a regular lumen suitable for high-pressure blood flow.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A healthy elastic artery __. a. is compliant b. reduces blood flow c. is a resistance artery d. has a thin wall and irregular lumen The correct answer and explanation is: The correct answer is a. is compliant. Explanation: Elastic arteries are large arteries close to the heart, such as the aorta and pulmonary arteries. [&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-18505","post","type-post","status-publish","format-standard","hentry","category-quiz-questions"],"_links":{"self":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/18505","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=18505"}],"version-history":[{"count":1,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/18505\/revisions"}],"predecessor-version":[{"id":18506,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/18505\/revisions\/18506"}],"wp:attachment":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/media?parent=18505"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/categories?post=18505"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/tags?post=18505"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}