{"id":270472,"date":"2025-07-25T07:41:35","date_gmt":"2025-07-25T07:41:35","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=270472"},"modified":"2025-07-25T07:41:37","modified_gmt":"2025-07-25T07:41:37","slug":"the-internal-urinary-sphincter-is-made-of-smooth-muscles","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/07\/25\/the-internal-urinary-sphincter-is-made-of-smooth-muscles\/","title":{"rendered":"The internal urinary sphincter is made of smooth muscles"},"content":{"rendered":"\n<p>The internal urinary sphincter is made of smooth muscles. ? <\/p>\n\n\n\n<p>True <\/p>\n\n\n\n<p>False<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-6-color\">The correct answer and explanation is:<\/mark><\/strong><\/p>\n\n\n\n<p><strong>True<\/strong>.<\/p>\n\n\n\n<p>The internal urinary sphincter is composed of smooth muscle tissue. This sphincter is located at the junction of the bladder and the urethra and is part of the involuntary control system of the urinary system. Unlike the external urinary sphincter, which consists of skeletal muscle and is under voluntary control, the internal sphincter operates involuntarily.<\/p>\n\n\n\n<p>Smooth muscles are specialized for involuntary movements and are controlled by the autonomic nervous system. In the case of the internal sphincter, its primary function is to maintain urine retention in the bladder until the appropriate time for urination. This sphincter contracts to prevent urine from leaking out of the bladder, especially when the body is in a state of rest or while the individual is unaware of the need to urinate. Once the bladder fills to a certain level, signals are sent to the brain to trigger the urge to urinate. At this point, the internal sphincter relaxes, allowing urine to flow into the urethra.<\/p>\n\n\n\n<p>The smooth muscle of the internal sphincter works in coordination with other parts of the urinary system, such as the detrusor muscle of the bladder, to control urination. The autonomic nervous system, particularly the sympathetic and parasympathetic branches, regulates the contraction and relaxation of this muscle. The parasympathetic nervous system, when activated, promotes the relaxation of the internal sphincter to facilitate urination.<\/p>\n\n\n\n<p>In contrast, the external urinary sphincter, which surrounds the urethra, is made up of skeletal muscle and is under voluntary control. This allows individuals to consciously decide when to start and stop urination, providing control over the final phase of the process.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The internal urinary sphincter is made of smooth muscles. ? True False The correct answer and explanation is: True. The internal urinary sphincter is composed of smooth muscle tissue. This sphincter is located at the junction of the bladder and the urethra and is part of the involuntary control system of the urinary system. Unlike [&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-270472","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/270472","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=270472"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/270472\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=270472"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=270472"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=270472"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}