{"id":2961,"date":"2024-08-13T09:40:00","date_gmt":"2024-08-13T13:40:00","guid":{"rendered":"https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/?post_type=chapter&#038;p=2961"},"modified":"2024-12-06T16:22:44","modified_gmt":"2024-12-06T21:22:44","slug":"introduction-to-the-vestibulocochlear-system-the-ears-2","status":"publish","type":"chapter","link":"https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/chapter\/introduction-to-the-vestibulocochlear-system-the-ears-2\/","title":{"raw":"Introduction to the Vestibulocochlear System: The Ears","rendered":"Introduction to the Vestibulocochlear System: The Ears"},"content":{"raw":"<span style=\"color: #000000\">The <strong>vestibulocochlear system<\/strong> is important to assess because it is responsible for <strong>hearing<\/strong> and <strong>equilibrium<\/strong> (sense of balance). In this chapter, we focus mainly on hearing; additional information particularly related to objective assessment related to balance can be found in the<\/span> <a href=\"https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/part\/main-body-4\/\" target=\"_blank\" rel=\"noopener\">neurological system assessment chapter<\/a><span style=\"color: #000000\">.<\/span>\r\n\r\n<span style=\"color: #000000\">As a nurse, your assessment of the vestibulocochlear system provides information about the functioning of this system and potential cues that may require your action.<\/span>\r\n\r\n<span style=\"color: #000000\">The main components of the vestibulocochlear system include:<\/span>\r\n<ul>\r\n \t<li style=\"font-weight: 400\"><span style=\"color: #000000\">External ear (auricle\/pinna): <strong>Figure 1<\/strong> and <strong>Figure 2<\/strong>.<\/span><\/li>\r\n \t<li style=\"font-weight: 400\"><span style=\"color: #000000\">Middle ear and inner ear: <strong>Figure 2<\/strong>.<\/span><\/li>\r\n \t<li style=\"font-weight: 400\">Vestibulocochlear nerve (cranial nerve [CN] VIII): <strong style=\"color: #000000;text-align: initial;font-size: 1em\">Figure 2<\/strong><span style=\"color: #000000;text-align: initial;font-size: 1em\">.<\/span><\/li>\r\n<\/ul>\r\n<img src=\"https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/wp-content\/uploads\/sites\/421\/2024\/10\/Ear-blue-lines-fixed-tragus-and-mastoid-process-202x300.jpg\" alt=\"\" width=\"451\" height=\"670\" class=\"alignnone wp-image-3527\" \/>\r\n\r\n<span style=\"color: #000000\"><strong>Figure 1<\/strong>: External ear.<\/span>\r\n\r\n<span style=\"color: #000000\">This file is licensed under the <a href=\"https:\/\/en.wikipedia.org\/wiki\/en:Creative_Commons\" target=\"_blank\" rel=\"noopener\" style=\"color: #000000\">Creative Commons<\/a> <a href=\"https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/deed.en\" style=\"color: #000000\">Attribution-Share Alike 4.0 International<\/a> license. Attribution: Genusfotografen (<a href=\"http:\/\/www.genusfotografen.se\/\" target=\"_blank\" rel=\"noopener\" style=\"color: #000000\">genusfotografen.se<\/a>) &amp; Wikimedia Sverige (<a href=\"https:\/\/wikimedia.se\/\" target=\"_blank\" rel=\"noopener\" style=\"color: #000000\">wikimedia.se<\/a>). From: <a href=\"https:\/\/commons.wikimedia.org\/wiki\/File:Human_right_ear_(cropped).jpg\" target=\"_blank\" rel=\"noopener\" style=\"color: #000000\">https:\/\/commons.wikimedia.org\/wiki\/File:Human_right_ear_(cropped).jpg.<\/a> Our team made modifications with labelling (artist: Tayiba Rahman).<\/span>\r\n\r\n<img src=\"https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/wp-content\/uploads\/sites\/421\/2024\/08\/Screenshot-2024-08-17-095154-300x206.png\" alt=\"\" width=\"649\" height=\"446\" class=\" wp-image-3098 aligncenter\" \/>\r\n\r\n<span style=\"color: #000000\"><strong>Figure 2<\/strong>: External, middle, and inner ear and vestibulocochlear nerve.<\/span>\r\n\r\n<span style=\"color: #000000\">J. Gordon Betts, Kelly A. Young, James A. Wise, Eddie Johnson, Brandon Poe, Dean H. Kruse, Oksana Korol, Jody E. Johnson, Mark Womble, Peter DeSaix. (2022).<\/span> <a href=\"https:\/\/openstax.org\/books\/anatomy-and-physiology-2e\/pages\/14-1-sensory-perception\" target=\"_blank\" rel=\"noopener\">The Somatic Nervous System<\/a>. <span style=\"color: #000000\">In<\/span> <a href=\"https:\/\/doi.org\/https:\/openstax.org\/books\/anatomy-and-physiology-2e\/pages\/1-introduction\" target=\"_blank\" rel=\"noopener\">Anatomy and Physiology 2e<\/a>. <span style=\"color: #000000\">OpenStax.<\/span> <a href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\" target=\"_blank\" rel=\"noopener\">CC BY 4.0 license<\/a>\r\n\r\n<span style=\"color: #000000\">Watch this video to refresh your knowledge of <\/span><a href=\"https:\/\/www.youtube.com\/watch?v=Ie2j7GpC4JU\" target=\"_blank\" rel=\"noopener\">anatomy and physiology of the vestibulocochlear system<\/a>.\r\n<div class=\"textbox textbox--examples\"><header class=\"textbox__header\">\r\n<h2 class=\"textbox__title\" style=\"text-align: center\">Clinical Tip<\/h2>\r\n<\/header>\r\n<div class=\"textbox__content\">\r\n\r\n<span style=\"color: #000000\">The vestibulocochlear system is closely interconnected with the<\/span> <a href=\"https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/part\/main-body-4\/\" target=\"_blank\" rel=\"noopener\">neurological<\/a>, <a href=\"https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/part\/eye-system-assessment\/\" target=\"_blank\" rel=\"noopener\">ophthalmic<\/a>, <span style=\"color: #000000\">and<\/span> <a href=\"https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/part\/musculoskeletal-system\/\" target=\"_blank\" rel=\"noopener\">musculoskeletal<\/a> <span style=\"color: #000000\">system, so it is rarely assessed in isolation. Also, when assessing the ears, you will often assess the lymph nodes around the ears:<\/span> <a href=\"https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/chapter\/inspection-and-palpation-of-the-lymph-nodes\/\" target=\"_blank\" rel=\"noopener\">lymphatic assessment.<\/a>\r\n\r\n<\/div>\r\n<\/div>\r\n<div class=\"postbox h5p-sidebar\">\r\n<div>\r\n<h2><span style=\"color: #000000\">Activity: Check Your Understanding<\/span><\/h2>\r\n<\/div>\r\n<p class=\"h5p-action-bar-settings h5p-panel\">[h5p id=\"252\"]<\/p>\r\n\r\n<\/div>\r\n<div class=\"postbox h5p-sidebar\"><\/div>","rendered":"<p><span style=\"color: #000000\">The <strong>vestibulocochlear system<\/strong> is important to assess because it is responsible for <strong>hearing<\/strong> and <strong>equilibrium<\/strong> (sense of balance). In this chapter, we focus mainly on hearing; additional information particularly related to objective assessment related to balance can be found in the<\/span> <a href=\"https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/part\/main-body-4\/\" target=\"_blank\" rel=\"noopener\">neurological system assessment chapter<\/a><span style=\"color: #000000\">.<\/span><\/p>\n<p><span style=\"color: #000000\">As a nurse, your assessment of the vestibulocochlear system provides information about the functioning of this system and potential cues that may require your action.<\/span><\/p>\n<p><span style=\"color: #000000\">The main components of the vestibulocochlear system include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"color: #000000\">External ear (auricle\/pinna): <strong>Figure 1<\/strong> and <strong>Figure 2<\/strong>.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"color: #000000\">Middle ear and inner ear: <strong>Figure 2<\/strong>.<\/span><\/li>\n<li style=\"font-weight: 400\">Vestibulocochlear nerve (cranial nerve [CN] VIII): <strong style=\"color: #000000;text-align: initial;font-size: 1em\">Figure 2<\/strong><span style=\"color: #000000;text-align: initial;font-size: 1em\">.<\/span><\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/wp-content\/uploads\/sites\/421\/2024\/10\/Ear-blue-lines-fixed-tragus-and-mastoid-process-202x300.jpg\" alt=\"\" width=\"451\" height=\"670\" class=\"alignnone wp-image-3527\" srcset=\"https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/wp-content\/uploads\/sites\/421\/2024\/10\/Ear-blue-lines-fixed-tragus-and-mastoid-process-202x300.jpg 202w, https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/wp-content\/uploads\/sites\/421\/2024\/10\/Ear-blue-lines-fixed-tragus-and-mastoid-process-688x1024.jpg 688w, https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/wp-content\/uploads\/sites\/421\/2024\/10\/Ear-blue-lines-fixed-tragus-and-mastoid-process-768x1142.jpg 768w, https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/wp-content\/uploads\/sites\/421\/2024\/10\/Ear-blue-lines-fixed-tragus-and-mastoid-process-1033x1536.jpg 1033w, https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/wp-content\/uploads\/sites\/421\/2024\/10\/Ear-blue-lines-fixed-tragus-and-mastoid-process-65x97.jpg 65w, https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/wp-content\/uploads\/sites\/421\/2024\/10\/Ear-blue-lines-fixed-tragus-and-mastoid-process-225x335.jpg 225w, https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/wp-content\/uploads\/sites\/421\/2024\/10\/Ear-blue-lines-fixed-tragus-and-mastoid-process-350x521.jpg 350w, https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/wp-content\/uploads\/sites\/421\/2024\/10\/Ear-blue-lines-fixed-tragus-and-mastoid-process.jpg 1280w\" sizes=\"auto, (max-width: 451px) 100vw, 451px\" \/><\/p>\n<p><span style=\"color: #000000\"><strong>Figure 1<\/strong>: External ear.<\/span><\/p>\n<p><span style=\"color: #000000\">This file is licensed under the <a href=\"https:\/\/en.wikipedia.org\/wiki\/en:Creative_Commons\" target=\"_blank\" rel=\"noopener\" style=\"color: #000000\">Creative Commons<\/a> <a href=\"https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/deed.en\" style=\"color: #000000\">Attribution-Share Alike 4.0 International<\/a> license. Attribution: Genusfotografen (<a href=\"http:\/\/www.genusfotografen.se\/\" target=\"_blank\" rel=\"noopener\" style=\"color: #000000\">genusfotografen.se<\/a>) &amp; Wikimedia Sverige (<a href=\"https:\/\/wikimedia.se\/\" target=\"_blank\" rel=\"noopener\" style=\"color: #000000\">wikimedia.se<\/a>). From: <a href=\"https:\/\/commons.wikimedia.org\/wiki\/File:Human_right_ear_(cropped).jpg\" target=\"_blank\" rel=\"noopener\" style=\"color: #000000\">https:\/\/commons.wikimedia.org\/wiki\/File:Human_right_ear_(cropped).jpg.<\/a> Our team made modifications with labelling (artist: Tayiba Rahman).<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/wp-content\/uploads\/sites\/421\/2024\/08\/Screenshot-2024-08-17-095154-300x206.png\" alt=\"\" width=\"649\" height=\"446\" class=\"wp-image-3098 aligncenter\" srcset=\"https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/wp-content\/uploads\/sites\/421\/2024\/08\/Screenshot-2024-08-17-095154-300x206.png 300w, https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/wp-content\/uploads\/sites\/421\/2024\/08\/Screenshot-2024-08-17-095154-768x527.png 768w, https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/wp-content\/uploads\/sites\/421\/2024\/08\/Screenshot-2024-08-17-095154-65x45.png 65w, https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/wp-content\/uploads\/sites\/421\/2024\/08\/Screenshot-2024-08-17-095154-225x154.png 225w, https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/wp-content\/uploads\/sites\/421\/2024\/08\/Screenshot-2024-08-17-095154-350x240.png 350w, https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/wp-content\/uploads\/sites\/421\/2024\/08\/Screenshot-2024-08-17-095154.png 947w\" sizes=\"auto, (max-width: 649px) 100vw, 649px\" \/><\/p>\n<p><span style=\"color: #000000\"><strong>Figure 2<\/strong>: External, middle, and inner ear and vestibulocochlear nerve.<\/span><\/p>\n<p><span style=\"color: #000000\">J. Gordon Betts, Kelly A. Young, James A. Wise, Eddie Johnson, Brandon Poe, Dean H. Kruse, Oksana Korol, Jody E. Johnson, Mark Womble, Peter DeSaix. (2022).<\/span> <a href=\"https:\/\/openstax.org\/books\/anatomy-and-physiology-2e\/pages\/14-1-sensory-perception\" target=\"_blank\" rel=\"noopener\">The Somatic Nervous System<\/a>. <span style=\"color: #000000\">In<\/span> <a href=\"https:\/\/doi.org\/https:\/openstax.org\/books\/anatomy-and-physiology-2e\/pages\/1-introduction\" target=\"_blank\" rel=\"noopener\">Anatomy and Physiology 2e<\/a>. <span style=\"color: #000000\">OpenStax.<\/span> <a href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\" target=\"_blank\" rel=\"noopener\">CC BY 4.0 license<\/a><\/p>\n<p><span style=\"color: #000000\">Watch this video to refresh your knowledge of <\/span><a href=\"https:\/\/www.youtube.com\/watch?v=Ie2j7GpC4JU\" target=\"_blank\" rel=\"noopener\">anatomy and physiology of the vestibulocochlear system<\/a>.<\/p>\n<div class=\"textbox textbox--examples\">\n<header class=\"textbox__header\">\n<h2 class=\"textbox__title\" style=\"text-align: center\">Clinical Tip<\/h2>\n<\/header>\n<div class=\"textbox__content\">\n<p><span style=\"color: #000000\">The vestibulocochlear system is closely interconnected with the<\/span> <a href=\"https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/part\/main-body-4\/\" target=\"_blank\" rel=\"noopener\">neurological<\/a>, <a href=\"https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/part\/eye-system-assessment\/\" target=\"_blank\" rel=\"noopener\">ophthalmic<\/a>, <span style=\"color: #000000\">and<\/span> <a href=\"https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/part\/musculoskeletal-system\/\" target=\"_blank\" rel=\"noopener\">musculoskeletal<\/a> <span style=\"color: #000000\">system, so it is rarely assessed in isolation. Also, when assessing the ears, you will often assess the lymph nodes around the ears:<\/span> <a href=\"https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/chapter\/inspection-and-palpation-of-the-lymph-nodes\/\" target=\"_blank\" rel=\"noopener\">lymphatic assessment.<\/a><\/p>\n<\/div>\n<\/div>\n<div class=\"postbox h5p-sidebar\">\n<div>\n<h2><span style=\"color: #000000\">Activity: Check Your Understanding<\/span><\/h2>\n<\/div>\n<p class=\"h5p-action-bar-settings h5p-panel\">\n<div id=\"h5p-252\">\n<div class=\"h5p-iframe-wrapper\"><iframe id=\"h5p-iframe-252\" class=\"h5p-iframe\" data-content-id=\"252\" style=\"height:1px\" src=\"about:blank\" frameBorder=\"0\" scrolling=\"no\" title=\"Drag and Drop the terms to the correct anatomical location on the ear.\"><\/iframe><\/div>\n<\/div>\n<\/div>\n<div class=\"postbox h5p-sidebar\"><\/div>\n","protected":false},"author":34,"menu_order":2,"template":"","meta":{"pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[],"contributor":[],"license":[],"class_list":["post-2961","chapter","type-chapter","status-publish","hentry"],"part":2956,"_links":{"self":[{"href":"https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/wp-json\/pressbooks\/v2\/chapters\/2961","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/wp-json\/wp\/v2\/users\/34"}],"version-history":[{"count":13,"href":"https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/wp-json\/pressbooks\/v2\/chapters\/2961\/revisions"}],"predecessor-version":[{"id":3622,"href":"https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/wp-json\/pressbooks\/v2\/chapters\/2961\/revisions\/3622"}],"part":[{"href":"https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/wp-json\/pressbooks\/v2\/parts\/2956"}],"metadata":[{"href":"https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/wp-json\/pressbooks\/v2\/chapters\/2961\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/wp-json\/wp\/v2\/media?parent=2961"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/wp-json\/pressbooks\/v2\/chapter-type?post=2961"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/wp-json\/wp\/v2\/contributor?post=2961"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/pressbooks.library.torontomu.ca\/assessmentnursingmain\/wp-json\/wp\/v2\/license?post=2961"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}