{"id":137895,"date":"2024-09-13T16:44:31","date_gmt":"2024-09-13T16:44:31","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=137895"},"modified":"2024-09-13T16:44:34","modified_gmt":"2024-09-13T16:44:34","slug":"what-tissue-covers-the-outside-of-the-body-and-lines-organs-within-the-body","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2024\/09\/13\/what-tissue-covers-the-outside-of-the-body-and-lines-organs-within-the-body\/","title":{"rendered":"What tissue covers the outside of the body and lines organs within the body"},"content":{"rendered":"\n

What tissue covers the outside of the body and lines organs within the body?<\/p>\n\n\n\n

A.
Epithelial.<\/p>\n\n\n\n

B.
Muscular.<\/p>\n\n\n\n

C.
Nervous.<\/p>\n\n\n\n

D.
Connective.<\/p>\n\n\n\n

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

The correct answer is:<\/p>\n\n\n\n

A. Epithelial.<\/strong><\/p>\n\n\n\n

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

Epithelial tissue is the type of tissue that covers the external surfaces of the body and lines internal organs and cavities. This tissue plays several critical roles in maintaining the body’s overall function and health.<\/p>\n\n\n\n

Structure and Types:<\/strong><\/p>\n\n\n\n

Epithelial tissue is characterized by closely packed cells with minimal extracellular matrix. These cells form continuous layers that act as a barrier between the external environment and the internal tissues and organs. The epithelial tissue is classified based on the shape of its cells and the number of cell layers present. The main types are:<\/p>\n\n\n\n

    \n
  1. Simple Epithelium:<\/strong> This consists of a single layer of cells. It is involved in processes such as absorption, secretion, and filtration. Examples include the lining of the gastrointestinal tract and the alveoli in the lungs.<\/li>\n\n\n\n
  2. Stratified Epithelium:<\/strong> This type has multiple layers of cells, which provide protection against mechanical stress, abrasion, and pathogens. An example is the epidermis of the skin.<\/li>\n\n\n\n
  3. Pseudo-stratified Epithelium:<\/strong> Although it appears to be stratified due to varying cell heights, it is actually a single layer with nuclei at different levels. This type is found in the respiratory tract, where it helps in trapping and moving particles out of the airways.<\/li>\n\n\n\n
  4. Transitional Epithelium:<\/strong> This tissue can stretch and is found in organs like the bladder, where it accommodates fluctuations in volume.<\/li>\n<\/ol>\n\n\n\n

    Functions:<\/strong><\/p>\n\n\n\n

      \n
    1. Protection:<\/strong> Epithelial tissue forms a protective barrier against mechanical injury, pathogens, and dehydration. For instance, the skin\u2019s epithelium prevents water loss and shields underlying tissues from environmental damage.<\/li>\n\n\n\n
    2. Absorption:<\/strong> In the digestive tract, epithelial cells absorb nutrients from ingested food.<\/li>\n\n\n\n
    3. Secretion:<\/strong> Glandular epithelium forms glands that secrete substances such as enzymes, hormones, and mucus.<\/li>\n\n\n\n
    4. Excretion:<\/strong> Epithelial tissues in the kidneys filter waste products from the blood to form urine.<\/li>\n\n\n\n
    5. Sensory Perception:<\/strong> Some epithelial cells have specialized sensory functions, such as in the taste buds and olfactory epithelium.<\/li>\n<\/ol>\n\n\n\n

      Overall, epithelial tissue is integral to maintaining the integrity and function of the body’s surfaces and cavities, ensuring a protective barrier and facilitating essential physiological processes.<\/p>\n","protected":false},"excerpt":{"rendered":"

      What tissue covers the outside of the body and lines organs within the body? A.Epithelial. B.Muscular. C.Nervous. D.Connective. The Correct Answer and Explanation is: The correct answer is: A. Epithelial. Explanation: Epithelial tissue is the type of tissue that covers the external surfaces of the body and lines internal organs and cavities. This tissue plays […]<\/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-137895","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/137895","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=137895"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/137895\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=137895"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=137895"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=137895"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}