{"id":45746,"date":"2025-08-03T12:43:42","date_gmt":"2025-08-03T12:43:42","guid":{"rendered":"https:\/\/idea.membrane.com\/songwriter\/?p=45746"},"modified":"2025-08-03T12:43:42","modified_gmt":"2025-08-03T12:43:42","slug":"peristalsis","status":"publish","type":"post","link":"https:\/\/kingarthur.com\/songwriter\/2025\/08\/03\/peristalsis\/","title":{"rendered":"Peristalsis"},"content":{"rendered":"<p><a href=\"http:\/\/kingarthur.com\/MegaEpix-Enormous\/multimedia\/XV\/Peristalsis.mp3\">Peristalsis.mp3<\/a><br \/>\n<a href=\"http:\/\/kingarthur.com\/MegaEpix-Enormous\/multimedia\/XV\/Peristalsis.mp4\">Peristalsis.mp4<\/a><br \/>\n<a href=\"http:\/\/kingarthur.com\/MegaEpix-Enormous\/multimedia\/XV\/Peristalsis-Pt-2.mp3\">Peristalsis-Pt-2.mp3<\/a><br \/>\n<a href=\"http:\/\/kingarthur.com\/MegaEpix-Enormous\/multimedia\/XV\/Peristalsis-Pt-2.mp4\">Peristalsis-Pt-2.mp4<\/a><br \/>\n<a href=\"http:\/\/kingarthur.com\/MegaEpix-Enormous\/multimedia\/XV\/Peristalsis-intro.mp3\">Peristalsis-intro.mp3<\/a><\/p>\n<p>[Intro]<br \/>\nGive me a notion<br \/>\n(Of your locomotion)<\/p>\n<p>[Verse 1]<br \/>\nAnchor and extend<br \/>\n(Again and again)<br \/>\nSegmented body<br \/>\n(Segments embody)<\/p>\n<p>[Bridge]<br \/>\nGive me a notion<br \/>\n(Of your locomotion)<br \/>\nOh, yes this is<br \/>\n(Peristalsis)<\/p>\n<p>[Chorus]<br \/>\nBidirectional movement<br \/>\n(For your amusement)<br \/>\nCoordinating contractions<br \/>\n(Reaching satisfaction)<\/p>\n<p>[Verse 2]<br \/>\nIn need of moisture<br \/>\n(That&#8217;s for sure)<br \/>\nTo move and breathe<br \/>\n(With any ease)<\/p>\n<p>[Bridge]<br \/>\nGive me a notion<br \/>\n(Of your locomotion)<br \/>\nOh, yes this is<br \/>\n(Peristalsis)<\/p>\n<p>[Chorus]<br \/>\nBidirectional movement<br \/>\n(For your amusement)<br \/>\nCoordinating contractions<br \/>\n(Reaching satisfaction)<\/p>\n<p>[Outro]<br \/>\n[Instrumental, Synth Solo, Organ, Bass]<br \/>\nGive me a notion<br \/>\n(Of your locomotion)<br \/>\n[Instrumental, Guitar Solo]<\/p>\n<p>A SCIENCE NOTE<\/p>\n<p data-start=\"0\" data-end=\"233\">A worm moves using a type of locomotion called <strong data-start=\"47\" data-end=\"62\">peristalsis<\/strong>, which is a wave-like motion that contracts and relaxes muscles along its body. This is especially true for <strong data-start=\"171\" data-end=\"185\">earthworms<\/strong>, the most studied example. Here&#8217;s how it works:<\/p>\n<h3 data-start=\"235\" data-end=\"270\">\ud83d\udd0d Anatomy Behind the Movement:<\/h3>\n<ul data-start=\"271\" data-end=\"503\">\n<li data-start=\"271\" data-end=\"365\">\n<p data-start=\"273\" data-end=\"365\"><strong data-start=\"273\" data-end=\"292\">Segmented Body:<\/strong> Earthworms have ring-like segments (called <em data-start=\"336\" data-end=\"344\">annuli<\/em>) covered in muscles.<\/p>\n<\/li>\n<li data-start=\"366\" data-end=\"503\">\n<p data-start=\"368\" data-end=\"393\"><strong data-start=\"368\" data-end=\"393\">Two Types of Muscles:<\/strong><\/p>\n<ul data-start=\"396\" data-end=\"503\">\n<li data-start=\"396\" data-end=\"445\">\n<p data-start=\"398\" data-end=\"445\"><strong data-start=\"398\" data-end=\"418\">Circular muscles<\/strong>: Wrap around each segment.<\/p>\n<\/li>\n<li data-start=\"448\" data-end=\"503\">\n<p data-start=\"450\" data-end=\"503\"><strong data-start=\"450\" data-end=\"474\">Longitudinal muscles<\/strong>: Run the length of the worm.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3 data-start=\"505\" data-end=\"536\">\ud83e\udeb1 Step-by-Step Locomotion:<\/h3>\n<ol data-start=\"537\" data-end=\"1138\">\n<li data-start=\"537\" data-end=\"794\">\n<p data-start=\"540\" data-end=\"562\"><strong data-start=\"540\" data-end=\"561\">Anchor and Extend<\/strong>:<\/p>\n<ul data-start=\"566\" data-end=\"794\">\n<li data-start=\"566\" data-end=\"676\">\n<p data-start=\"568\" data-end=\"676\">The <strong data-start=\"572\" data-end=\"592\">circular muscles<\/strong> contract in the front part of the worm, making those segments <em data-start=\"655\" data-end=\"675\">longer and thinner<\/em>.<\/p>\n<\/li>\n<li data-start=\"680\" data-end=\"794\">\n<p data-start=\"682\" data-end=\"794\">At the same time, tiny <strong data-start=\"705\" data-end=\"730\">bristles called setae<\/strong> on the worm\u2019s underside <em data-start=\"755\" data-end=\"763\">anchor<\/em> the rear segments to the soil.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li data-start=\"796\" data-end=\"1010\">\n<p data-start=\"799\" data-end=\"816\"><strong data-start=\"799\" data-end=\"815\">Push Forward<\/strong>:<\/p>\n<ul data-start=\"820\" data-end=\"1010\">\n<li data-start=\"820\" data-end=\"920\">\n<p data-start=\"822\" data-end=\"920\">The <strong data-start=\"826\" data-end=\"850\">longitudinal muscles<\/strong> then contract in the front, shortening and thickening those segments.<\/p>\n<\/li>\n<li data-start=\"924\" data-end=\"1010\">\n<p data-start=\"926\" data-end=\"1010\">This pulls the back of the worm forward as the front grips the soil using its setae.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li data-start=\"1012\" data-end=\"1138\">\n<p data-start=\"1015\" data-end=\"1026\"><strong data-start=\"1015\" data-end=\"1025\">Repeat<\/strong>:<\/p>\n<ul data-start=\"1030\" data-end=\"1138\">\n<li data-start=\"1030\" data-end=\"1138\">\n<p data-start=\"1032\" data-end=\"1138\">The wave of contraction (peristalsis) moves from the front to the back of the worm, propelling it forward.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<h3 data-start=\"1140\" data-end=\"1160\">\ud83c\udf00 Key Features:<\/h3>\n<ul data-start=\"1161\" data-end=\"1381\">\n<li data-start=\"1161\" data-end=\"1232\">\n<p data-start=\"1163\" data-end=\"1232\"><strong data-start=\"1163\" data-end=\"1189\">Bidirectional movement<\/strong>: Worms can move both forward and backward.<\/p>\n<\/li>\n<li data-start=\"1233\" data-end=\"1381\">\n<p data-start=\"1235\" data-end=\"1381\"><strong data-start=\"1235\" data-end=\"1256\">Requires moisture<\/strong>: Worms rely on moist environments because their skin must stay damp for gas exchange and to reduce friction during movement.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1383\" data-end=\"1546\" data-is-last-node=\"\" data-is-only-node=\"\">In short, a worm moves by <strong data-start=\"1409\" data-end=\"1469\">coordinating muscle contractions with anchoring bristles<\/strong>, creating a rippling motion that propels it through soil or across surfaces.<\/p>\n<h3>From the album &#8220;<a href=\"\/songwriter\/tag\/wormhole\/\">Wormhole<\/a>&#8220;<\/h3>\n","protected":false},"excerpt":{"rendered":"<p>Peristalsis.mp3 Peristalsis.mp4 Peristalsis-Pt-2.mp3 Peristalsis-Pt-2.mp4 Peristalsis-intro.mp3 [Intro] Give me a notion (Of your locomotion) [Verse 1] Anchor and extend (Again and again) Segmented body (Segments embody) [Bridge] Give me a notion (Of your locomotion) Oh, yes this is (Peristalsis) [Chorus] Bidirectional movement (For your amusement) Coordinating contractions (Reaching satisfaction) [Verse 2] In need of moisture (That&#8217;s [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","footnotes":""},"categories":[3,9,14],"tags":[4151],"class_list":["post-45746","post","type-post","status-publish","format-standard","hentry","category-4d-music","category-daniel","category-lyrics","tag-wormhole"],"_links":{"self":[{"href":"https:\/\/kingarthur.com\/songwriter\/wp-json\/wp\/v2\/posts\/45746","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kingarthur.com\/songwriter\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kingarthur.com\/songwriter\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kingarthur.com\/songwriter\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kingarthur.com\/songwriter\/wp-json\/wp\/v2\/comments?post=45746"}],"version-history":[{"count":2,"href":"https:\/\/kingarthur.com\/songwriter\/wp-json\/wp\/v2\/posts\/45746\/revisions"}],"predecessor-version":[{"id":45767,"href":"https:\/\/kingarthur.com\/songwriter\/wp-json\/wp\/v2\/posts\/45746\/revisions\/45767"}],"wp:attachment":[{"href":"https:\/\/kingarthur.com\/songwriter\/wp-json\/wp\/v2\/media?parent=45746"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kingarthur.com\/songwriter\/wp-json\/wp\/v2\/categories?post=45746"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kingarthur.com\/songwriter\/wp-json\/wp\/v2\/tags?post=45746"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}