Which type of cell is responsible for breaking down bone tissue?<\/p>\n\n\n\n
A.
Osteoclast.<\/p>\n\n\n\n
B.
Chondrocytes.<\/p>\n\n\n\n
C.
Osteocytes.<\/p>\n\n\n\n
D.
Osteoblast.<\/p>\n\n\n\n
The correct answer and Explanation is :<\/strong><\/mark><\/p>\n\n\n\n The correct answer is A. Osteoclast<\/strong>.<\/p>\n\n\n\n Explanation:<\/strong><\/p>\n\n\n\n Osteoclasts are specialized cells responsible for the resorption or breakdown of bone tissue. These cells play a crucial role in the maintenance, repair, and remodeling of bones. Here’s a breakdown of how osteoclasts function and their importance:<\/p>\n\n\n\n Understanding the role of osteoclasts is crucial for comprehending how bones adapt to stress, repair injuries, and maintain overall skeletal health.<\/p>\n","protected":false},"excerpt":{"rendered":" Which type of cell is responsible for breaking down bone tissue? A.Osteoclast. B.Chondrocytes. C.Osteocytes. D.Osteoblast. The correct answer and Explanation is : The correct answer is A. Osteoclast. Explanation: Osteoclasts are specialized cells responsible for the resorption or breakdown of bone tissue. These cells play a crucial role in the maintenance, repair, and remodeling of […]<\/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-137600","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/137600","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=137600"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/137600\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=137600"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=137600"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=137600"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}\n
Osteoclasts are large, multinucleated cells that adhere to the bone surface. They secrete acids and proteolytic enzymes that dissolve the mineralized matrix of the bone. This process releases calcium and phosphate ions into the bloodstream, which is essential for maintaining mineral balance and supporting various physiological functions.<\/li>\n\n\n\n
Bone is a dynamic tissue that undergoes continuous remodeling throughout life. This remodeling process involves the coordinated actions of osteoclasts and osteoblasts (the latter being cells responsible for bone formation). Osteoclasts break down old or damaged bone, while osteoblasts lay down new bone matrix. This balance ensures the maintenance of bone strength and integrity.<\/li>\n\n\n\n
Osteoclast activity is regulated by various factors, including hormones like parathyroid hormone (PTH) and calcitonin, and local factors such as cytokines. PTH stimulates osteoclast activity to increase blood calcium levels, while calcitonin inhibits it to lower blood calcium levels.<\/li>\n\n\n\n
Dysregulation of osteoclast function can lead to various bone disorders. For instance, excessive osteoclast activity can result in conditions like osteoporosis, where bones become fragile and more prone to fractures. Conversely, insufficient osteoclast activity can lead to conditions such as osteopetrosis, where bones become excessively dense but are structurally compromised.<\/li>\n<\/ol>\n\n\n\n