{"id":218925,"date":"2025-05-24T16:51:24","date_gmt":"2025-05-24T16:51:24","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=218925"},"modified":"2025-05-24T16:51:27","modified_gmt":"2025-05-24T16:51:27","slug":"which-of-the-following-is-true-of-smooth-muscle","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/05\/24\/which-of-the-following-is-true-of-smooth-muscle\/","title":{"rendered":"Which of the following is true of smooth muscle"},"content":{"rendered":"\n

Which of the following is true of smooth muscle?<\/p>\n\n\n\n

A) ?Smooth muscle can shorten more relative to its length compared with striated (skeletal) ?muscle.<\/p>\n\n\n\n

B) ?It can’t maintain a steady state of contraction.<\/p>\n\n\n\n

C) ?Smooth muscle can’t maintain an even amount of tension.<\/p>\n\n\n\n

D) ?It’s under voluntary control.<\/p>\n\n\n\n

The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n

Correct Answer: A) Smooth muscle can shorten more relative to its length compared with striated (skeletal) muscle.<\/strong><\/p>\n\n\n\n

\n\n\n\n

Explanation:<\/strong><\/h3>\n\n\n\n

Smooth muscle is a type of involuntary, non-striated muscle found in the walls of hollow organs such as the intestines, blood vessels, bladder, and uterus. It plays a vital role in various physiological functions such as regulating blood pressure, moving food through the digestive system, and controlling airflow in the lungs.<\/p>\n\n\n\n

Option A is correct<\/strong> because smooth muscle cells are designed for significant shortening. Unlike skeletal (striated) muscle fibers, which have a fixed sarcomere arrangement, smooth muscle cells have actin and myosin filaments arranged in a less organized fashion. This structural arrangement allows them to contract over a greater percentage of their resting length. Smooth muscle can contract to as little as 20\u201330% of its original length, making it highly adaptable in organs that need to change shape or volume significantly (e.g., the bladder or uterus).<\/p>\n\n\n\n

Option B is incorrect<\/strong> because smooth muscle can<\/em> maintain a steady state of contraction, known as the latch state<\/strong>. This allows it to hold contractions for long periods with minimal energy expenditure, which is important in organs such as blood vessels, where maintaining tone is essential.<\/p>\n\n\n\n

Option C is incorrect<\/strong> because smooth muscle can<\/em> maintain a consistent amount of tension over time. This is crucial in maintaining functions such as vascular resistance and gastrointestinal tone.<\/p>\n\n\n\n

Option D is incorrect<\/strong> because smooth muscle is not<\/em> under voluntary control. It is regulated involuntarily by the autonomic nervous system, hormones, and local chemical signals.<\/p>\n\n\n\n

In summary, smooth muscle’s ability to shorten extensively relative to its length, while maintaining tone and contractions over time without fatigue, makes option A<\/strong> the correct and most accurate statement.<\/p>\n\n\n\n

\"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"

Which of the following is true of smooth muscle? A) ?Smooth muscle can shorten more relative to its length compared with striated (skeletal) ?muscle. B) ?It can’t maintain a steady state of contraction. C) ?Smooth muscle can’t maintain an even amount of tension. D) ?It’s under voluntary control. The Correct Answer and Explanation is: Correct […]<\/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-218925","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/218925","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=218925"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/218925\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=218925"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=218925"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=218925"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}