{"id":5408,"date":"2025-01-07T04:30:25","date_gmt":"2025-01-07T09:30:25","guid":{"rendered":"https:\/\/usmle-rx.com\/?post_type=podcast&#038;p=5408"},"modified":"2026-01-20T09:42:51","modified_gmt":"2026-01-20T14:42:51","slug":"development-of-the-nervous-system-2","status":"publish","type":"podcast","link":"https:\/\/usmle-rx.com\/podcast\/development-of-the-nervous-system-2\/","title":{"rendered":"Development of the Nervous System"},"content":{"rendered":"<div class=\"relative ng-tns-c548-48 ng-star-inserted\">\n<p id=\"CP_NEU0024-VG02321598921d804ac3ae951a81625576e8\" class=\"section-container editable-content medium-editor-element\" role=\"textbox\" data-rxannotationdata=\"content.text\" data-medium-editor-element=\"true\" aria-multiline=\"true\" data-medium-editor-editor-index=\"1\" data-placeholder=\"Type your text\">Early in fetal development, the precursors of the major systems in the body are outlined. The three germ layers (endoderm, mesoderm, ectoderm) are formed during the third week of development. We\u2019ll focus on the ectoderm, from which the entire nervous system (central and peripheral) forms.<\/p>\n<\/div>\n<div class=\"relative ng-tns-c548-48 ng-star-inserted\">\n<p id=\"CP_NEU0024-VG030f3238aa849f44e081e2c26862cef2a7\" class=\"section-container editable-content medium-editor-element\" role=\"textbox\" data-rxannotationdata=\"content.text\" data-medium-editor-element=\"true\" aria-multiline=\"true\" data-medium-editor-editor-index=\"1\" data-placeholder=\"Type your text\">But first, let\u2019s back up to review the anatomy of the central nervous system (CNS) and peripheral nervous system (PNS) so that we know what the end products of their development are. The CNS comprises the brain and spinal cord; the PNS is composed of the 31 pairs of spinal and 12 pairs of cranial nerves and all the ganglia.<\/p>\n<p role=\"textbox\" data-rxannotationdata=\"content.text\" data-medium-editor-element=\"true\" aria-multiline=\"true\" data-medium-editor-editor-index=\"1\" data-placeholder=\"Type your text\">After listening to this AudioBrick, you should be able to:<\/p>\n<ul class=\"section-container badge-list learning-objective-badge-list ng-tns-c548-48\">\n<li class=\"mat-badge mat-badge-warn ng-tns-c548-48 mat-badge-overlap mat-badge-above mat-badge-before mat-badge-medium ng-star-inserted\" data-rxvignette=\"true\" data-rxannotationidentifier=\"CP_NEU0024.4-LO00\"><span class=\"editable-content ng-tns-c548-48 medium-editor-element\" role=\"textbox\" data-rxannotationdata=\"learningObjective\" data-medium-editor-element=\"true\" aria-multiline=\"true\" data-medium-editor-editor-index=\"1\" data-placeholder=\"Type your text\">List the derivatives of ectoderm.<\/span><\/li>\n<li class=\"mat-badge mat-badge-warn ng-tns-c548-48 mat-badge-overlap mat-badge-above mat-badge-before mat-badge-medium ng-star-inserted\" data-rxvignette=\"true\" data-rxannotationidentifier=\"CP_NEU0024.4-LO01\"><span class=\"editable-content ng-tns-c548-48 medium-editor-element\" role=\"textbox\" data-rxannotationdata=\"learningObjective\" data-medium-editor-element=\"true\" aria-multiline=\"true\" data-medium-editor-editor-index=\"1\" data-placeholder=\"Type your text\">Define neurulation and explain how it occurs, including closure and the dates of neuropore closure.<\/span><\/li>\n<li class=\"mat-badge mat-badge-warn ng-tns-c548-48 mat-badge-overlap mat-badge-above mat-badge-before mat-badge-medium ng-star-inserted\" data-rxvignette=\"true\" data-rxannotationidentifier=\"CP_NEU0024.4-LO02\"><span class=\"editable-content ng-tns-c548-48 medium-editor-element\" role=\"textbox\" data-rxannotationdata=\"learningObjective\" data-medium-editor-element=\"true\" aria-multiline=\"true\" data-medium-editor-editor-index=\"1\" data-placeholder=\"Type your text\">Describe the origin, migration, and fate of neural crest cells, particularly those that form the peripheral nervous system.<\/span><\/li>\n<li class=\"mat-badge mat-badge-warn ng-tns-c548-48 mat-badge-overlap mat-badge-above mat-badge-before mat-badge-medium ng-star-inserted\" data-rxvignette=\"true\" data-rxannotationidentifier=\"CP_NEU0024.4-LO03\"><span class=\"editable-content ng-tns-c548-48 medium-editor-element\" role=\"textbox\" data-rxannotationdata=\"learningObjective\" data-medium-editor-element=\"true\" aria-multiline=\"true\" data-medium-editor-editor-index=\"1\" data-placeholder=\"Type your text\">Explain how the neural tube is organized into three layers.<\/span><\/li>\n<li class=\"mat-badge mat-badge-warn ng-tns-c548-48 mat-badge-overlap mat-badge-above mat-badge-before mat-badge-medium ng-star-inserted\" data-rxvignette=\"true\" data-rxannotationidentifier=\"CP_NEU0024.4-LO04\"><span class=\"editable-content ng-tns-c548-48 medium-editor-element\" role=\"textbox\" data-rxannotationdata=\"learningObjective\" data-medium-editor-element=\"true\" aria-multiline=\"true\" data-medium-editor-editor-index=\"1\" data-placeholder=\"Type your text\">Describe how the spinal cord develops from the neural tube, and describe the contributions of each to these layers to the structure of the mature spinal cord, with emphasis on the alar and basal plates.<\/span><\/li>\n<li class=\"mat-badge mat-badge-warn ng-tns-c548-48 mat-badge-overlap mat-badge-above mat-badge-before mat-badge-medium ng-star-inserted\" data-rxvignette=\"true\" data-rxannotationidentifier=\"CP_NEU0024.4-LO05\"><span class=\"editable-content ng-tns-c548-48 medium-editor-element\" role=\"textbox\" data-rxannotationdata=\"learningObjective\" data-medium-editor-element=\"true\" aria-multiline=\"true\" data-medium-editor-editor-index=\"1\" data-placeholder=\"Type your text\">Describe the development of the brain, including the five brain vesicles, the brainstem, and the cerebral cortex.<\/span><\/li>\n<\/ul>\n<p>You can also check out the original brick on the development of the nervous system from our Neurology and Special Senses collection, which is <a href=\"https:\/\/usmle-rx.scholarrx.com\/rx-bricks\/brick\/CP_NEU0024\">available for free.<\/a><\/p>\n<p>Learn more about\u00a0<a href=\"https:\/\/usmlerx.wpengine.com\/products\/rx-bricks\/\">Rx Bricks<\/a>\u00a0by signing up for a free USMLE-Rx account:\u00a0<a href=\"https:\/\/usmlerx.wpengine.com\/free-bricks\/\">www.usmle-rx.com<\/a><\/p>\n<p>You will get 5 days of full access to our\u00a0<a href=\"https:\/\/usmlerx.wpengine.com\/products\/step-1-rx360\/\">Rx360+<\/a>\u00a0program, including nearly 800 Rx Bricks.\u00a0 After the 5-day period, you will still be able to access over\u00a0<strong>150 free bricks<\/strong>, including the entire collections for\u00a0<strong>General Microbiology<\/strong>\u00a0and\u00a0<strong>Cellular and Molecular Biology<\/strong>.<\/p>\n<p>***<\/p>\n<p>If you enjoyed this episode, we\u2019d love for you to leave a review on\u00a0<a href=\"https:\/\/podcasts.apple.com\/us\/podcast\/the-rx-bricks-podcast\/id1530646481\">Apple Podcasts<\/a>.\u00a0 It helps with our visibility, and the more med students (or future med students) listen to the podcast, the more we can provide to the future physicians of the world.<\/p>\n<p>Follow\u00a0<a href=\"https:\/\/usmlerx.wpengine.com\/\">USMLE-Rx<\/a>\u00a0at:<br \/>\nFacebook: <a href=\"http:\/\/www.facebook.com\/usmlerx\">facebook.com\/usmlerx<\/a><br \/>\nBlog: <a href=\"https:\/\/usmle-rx.com\/blog-posts\/\">usmle-rx.com\/blog-posts<\/a><br \/>\nX: <a href=\"https:\/\/x.com\/usmle_rx_\">@usmle_rx_<\/a><br \/>\nInstagram: <a href=\"https:\/\/www.instagram.com\/usmle_rx_\">@usmle_rx_<\/a><br \/>\nYouTube: <a href=\"http:\/\/www.youtube.com\/USMLERX\">youtube.com\/USMLERX<\/a><\/p>\n<p>Learn how you can access over 150 of our bricks for FREE:\u00a0<a href=\"https:\/\/usmlerx.wpengine.com\/free-bricks\/\">https:\/\/usmle-rx.com\/free-bricks\/<\/a><\/p>\n<p>from our Musculoskeletal, Skin, and Connective Tissue collection, which is <a href=\"https:\/\/usmle-rx.scholarrx.com\/rx-bricks\/brick\/CP_MUS0018\">available for free.<\/a><\/p>\n<p>Learn more about\u00a0<a href=\"https:\/\/usmlerx.wpengine.com\/products\/rx-bricks\/\">Rx Bricks<\/a>\u00a0by signing up for a free USMLE-Rx account:\u00a0<a href=\"https:\/\/usmlerx.wpengine.com\/free-bricks\/\">www.usmle-rx.com<\/a><\/p>\n<p>You will get 5 days of full access to our\u00a0<a href=\"https:\/\/usmlerx.wpengine.com\/products\/step-1-rx360\/\">Rx360+<\/a>\u00a0program, including nearly 800 Rx Bricks.\u00a0 After the 5-day period, you will still be able to access over\u00a0<strong>150 free bricks<\/strong>, including the entire collections for\u00a0<strong>General Microbiology<\/strong>\u00a0and\u00a0<strong>Cellular and Molecular Biology<\/strong>.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"Early in fetal development, the precursors of the major systems in the body are outlined. The three germ layers (endoderm, mesoderm, ectoderm) are formed during the third week of development. We\u2019ll focus on the ectoderm, from which the entire nervous system (central and peripheral) forms. But first, let\u2019s back up to review the anatomy of&hellip;","protected":false},"author":21,"featured_media":4004,"menu_order":0,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"sync_status":"none","episode_type":"audio","audio_file":"https:\/\/episodes.castos.com\/5f410b62d04ef1-00454701\/Development-of-the-Nervous-System-AB-2021.mp3","podmotor_file_id":"","podmotor_episode_id":"","castos_file_data":"","cover_image":"","cover_image_id":"","duration":"00:20:39","filesize":"15.3 mb","filesize_raw":"16080442","date_recorded":"2025-01-07 04:30:25","explicit":"","block":"","itunes_episode_number":"","itunes_title":"","itunes_season_number":"","itunes_episode_type":"full"},"tags":[52,53,54,65,82],"series":[133],"class_list":["post-5408","podcast","type-podcast","status-publish","has-post-thumbnail","hentry","tag-usmle","tag-first-aid","tag-rx-bricks","tag-usmle-rx","tag-neurology","series-the-rx-bricks-podcast"],"acf":[],"episode_featured_image":"https:\/\/usmle-rx.com\/wp-content\/uploads\/2021\/05\/image-17.png","episode_player_image":"https:\/\/usmle-rx.com\/wp-content\/uploads\/2020\/09\/AudioBricks_CoverArt-1.png","download_link":"https:\/\/chtbl.com\/track\/EB2DCC\/usmle-rx.com\/podcast-download\/5408\/development-of-the-nervous-system-2.mp3","player_link":"https:\/\/chtbl.com\/track\/EB2DCC\/usmle-rx.com\/podcast-player\/5408\/development-of-the-nervous-system-2.mp3","audio_player":null,"episode_data":{"playerMode":"dark","subscribeUrls":{"apple_podcasts":{"key":"apple_podcasts","url":"https:\/\/podcasts.apple.com\/us\/podcast\/the-rx-bricks-podcast\/id1530646481","label":"Apple Podcasts","class":"apple_podcasts","icon":"apple-podcasts.png"},"google_play":{"key":"google_play","url":"https:\/\/www.google.com\/podcasts?feed=aHR0cHM6Ly93d3cudXNtbGUtcnguY29tL2ZlZWQvcG9kY2FzdA%3D%3D","label":"Google Play","class":"google_play","icon":"google-play.png"},"overcast":{"key":"overcast","url":"https:\/\/overcast.fm\/itunes1530646481\/the-rx-bricks-podcast","label":"Overcast","class":"overcast","icon":"overcast.png"},"spotify":{"key":"spotify","url":"https:\/\/open.spotify.com\/show\/6difsNR0giFPpNfJM2e5l2","label":"Spotify","class":"spotify","icon":"spotify.png"},"stitcher":{"key":"stitcher","url":"https:\/\/www.stitcher.com\/show\/the-rx-bricks-podcast","label":"Stitcher","class":"stitcher","icon":"stitcher.png"}},"rssFeedUrl":"https:\/\/usmle-rx.com\/feed\/podcast\/the-rx-bricks-podcast","embedCode":"<blockquote class=\"wp-embedded-content\" data-secret=\"qr3JenQbsi\"><a href=\"https:\/\/usmle-rx.com\/podcast\/development-of-the-nervous-system-2\/\">Development of the Nervous System<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/usmle-rx.com\/podcast\/development-of-the-nervous-system-2\/embed\/#?secret=qr3JenQbsi\" width=\"500\" height=\"350\" title=\"&#8220;Development of the Nervous System&#8221; &#8212; USMLE-Rx\" data-secret=\"qr3JenQbsi\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! 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