{"id":4242,"date":"2020-06-15T17:53:48","date_gmt":"2020-06-15T17:53:48","guid":{"rendered":"https:\/\/littlemedsch.wpengine.com\/ottawa\/?p=4242"},"modified":"2022-04-18T15:08:37","modified_gmt":"2022-04-18T15:08:37","slug":"why-do-i-have-wrinkles-when-i-take-a-bath","status":"publish","type":"post","link":"https:\/\/littlemedicalschool.com\/ottawa\/blog\/why-do-i-have-wrinkles-when-i-take-a-bath\/","title":{"rendered":"Why do I have wrinkles when I take a bath?"},"content":{"rendered":"<p><span style=\"font-size: 14pt;\">Author: Layal Bou Abdo, MSN<\/span><\/p>\n<p><span style=\"font-size: 14pt;\">Illustrator: Angeline Boswell<\/span><\/p>\n<p><span style=\"font-size: 14pt;\">15\/06\/2020<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-size: 14pt;\">This\u00a0remains a mystery! \u00a0\u201cPruney\u201d fingers and toes are another representation of wrinkles when you take a bath!<\/span><\/p>\n<p><span style=\"font-size: 14pt;\">The wrinkles on your skin happen when you stay in the bath or soak your hands or feet for around 5 min in warm water, and it also happens faster with hotter water. The wrinkles last for around 3.5 minutes after you dry your hands and feet.<\/span><\/p>\n<p><span style=\"font-size: 14pt;\">It only happens with your hands and feet and not with the rest of your skin.<\/span><\/p>\n<p><span style=\"font-size: 14pt;\">Did you know that <a href=\"https:\/\/www.nationalgeographic.com\/animals\/mammals\/r\/rhesus-macaque\/\" target=\"_blank\" rel=\"noopener noreferrer\">macaques<\/a> also have pruney fingers and toes after constant exposure to water?<\/span><\/p>\n<h4><\/h4>\n<h1><span style=\"color: #000000; font-size: 18pt;\"><strong>What the skin is made of<\/strong><strong>?<\/strong><\/span><\/h1>\n<p>&nbsp;<\/p>\n<p><span style=\"font-size: 14pt;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4254 size-medium\" src=\"https:\/\/littlemedicalschool.com\/ottawa\/files\/2022\/04\/Skin-drawing-300x261-1.jpeg\" alt=\"Anatomy of the skin\" width=\"300\" height=\"261\" \/><\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-size: 14pt;\">Two layers of tissues make up your skin, the epidermis and the dermis.<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 14pt;\">The <strong>epidermis<\/strong> is the outside part of the skin.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 14pt;\">The epidermis has 4 layers. It consists of an outer shield of dead cells called the\u00a0<strong>stratum corneum<\/strong>. The deeper section of the epidermis, or the <strong>basal layer,<\/strong> consists of rapidly dividing cells. When you perform certain activities, dead cells from the stratum corneum get damaged or scraped off. Yet, cells from the basal layers rise to replace them. The epidermis serves as the body\u2019s initial barrier to invading foreign substances.<\/span><\/p>\n<p><span style=\"font-size: 14pt;\">Pores are <b>small openings in the skin that release oils and sweat<\/b>. They&#8217;re also connected to your hair follicles<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-size: 14pt;\"><strong>Keratinocyte <\/strong>is the main skin cell that makes up the epidermis, named this way because it produces a tough protein called keratin. It gives your skin much of its resistance to physical wear and tear and makes skin\u00a0<strong>waterproof<\/strong>.<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 14pt;\">The <strong>dermis <\/strong>is the inside of the skin. It\u2019s directly below the epidermis and it\u2019s a thicker layer. Blood vessels, sweat glands, hair follicles (roots), and sebaceous glands, form the\u00a0dermis. The sebaceous glands produce the sebum. This layer is also made of dense connective tissues. Embedded inside this layer are different kinds of important receptors:<\/span>\n<ul>\n<li><span style=\"font-size: 14pt;\">The Thermoreceptors regulate the body\u2019s temperature as they detect a temperature change.<\/span><\/li>\n<li><span style=\"font-size: 14pt;\"><strong>Meissner&#8217;s<\/strong> <strong>corpuscles,<\/strong>\u00a0or touch receptors.<\/span><\/li>\n<li><span style=\"font-size: 14pt;\">Free nerve endings that detect pain and tissue damage.<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span style=\"font-size: 14pt;\">Underneath this layer is a thin layer of fat that cushions your body (subcutaneous).<\/span><\/li>\n<\/ul>\n<h4><\/h4>\n<h1><span style=\"color: #000000; font-size: 18pt;\"><strong>Why does the skin have wrinkles while taking a bath?<\/strong><\/span><\/h1>\n<p>&nbsp;<\/p>\n<ul>\n<li>\n<h4><span style=\"font-size: 14pt; color: #000000;\"><strong>Theory 1! Bye Bye Sebum<\/strong><\/span><\/h4>\n<ul>\n<li><span style=\"font-size: 14pt;\">A special oil called sebum (say: SEE-bum) cover your skin. Sebum is found on the outermost layer of the skin. Sebum is a natural moisturizer and lubricant that protects your skin. It also makes your skin a bit waterproof. But staying in water for a long time washes away the sebum. Then, the water can penetrate the outer layer of your skin. The water cause skin to swell up and get puffy. And this is how you get wrinkles on your hands and feet when you take a bath.<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><span style=\"font-size: 14pt;\"><em>Our critique of that theory is that if the sebum (oil) is dissolved when soaked in water, why do we not have wrinkles when we shower with soap? It\u2019s well known that soap dissolves the oil!<\/em><\/span><\/p>\n<p>&nbsp;<\/p>\n<ul>\n<li>\n<h4><span style=\"color: #000000; font-size: 14pt;\"><strong>Theory 2! Keratin, the naughty one<\/strong><\/span><\/h4>\n<ul>\n<li><span style=\"font-size: 14pt;\">The keratin in the epidermis (stratum corneum) loves the water. When you soak your hands in water, the keratin absorbs it and swells. The inside of the fingers, however, does not swell. This bunching up occurs on fingers and toes because the epidermis is much thicker on the hands and feet than elsewhere on the body. (The hair and nails, which contain different types of keratin, also absorb some water. This is why the nails get softer after bathing or doing the dishes.)<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul>\n<li>\n<h4><span style=\"font-size: 14pt; color: #000000;\"><strong>Theory 3! What Scientists Know Now?<\/strong><\/span><\/h4>\n<\/li>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><span style=\"font-size: 14pt;\">Researchers noticed that it didn\u2019t happen to people with nerve damage in their fingertips or toes. That meant the wrinkling was part of an involuntary (automatic) response of the <a href=\"https:\/\/kidshealth.org\/en\/parents\/brain-nervous-system.html\" target=\"_blank\" rel=\"noopener noreferrer\">sympathetic nervous system<\/a>.<\/span><\/li>\n<li><span style=\"font-size: 14pt;\">Pruney fingers occur when the nervous system sends a message to the blood vessels to shrink (vasoconstriction). Blood vessels are the tiny pipes that carry blood around your body. The narrowed blood vessels reduce the volume of the fingertips slightly, causing loose folds of skin that form wrinkles.\u00a0And this is how we get wrinkles on our hands and toes when we take a bath.<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><span style=\"font-size: 14pt;\"><em>This theory explains how the process happens but it does not clarify what stimulates the\u00a0<\/em>sympathetic nervous system.<\/span><\/p>\n<h2><\/h2>\n<ul>\n<li>\n<h4><span style=\"font-size: 14pt;\"><span style=\"color: #000000;\"><strong>Theory 4! Good grip\/slipping prevention?<\/strong><\/span><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-4245 size-medium\" src=\"https:\/\/littlemedicalschool.com\/ottawa\/files\/2022\/04\/Why-do-we-have-fingerprints-261x300-1.jpg\" alt=\"Wrinkly hands in the bath\" width=\"261\" height=\"300\" \/><\/span><\/h4>\n<ul>\n<li><span style=\"font-size: 14pt;\">Some scientists think wrinkling may give you a better grip in the water. This makes it easier for you to touch and hold wet objects with your hands. Your toes also wrinkle in water, and so maybe this helps you safely walk on wet surfaces. A great analogy to explain this theory is that smooth tires, such as the racing tire, provide the best grip in dry conditions. In wet conditions, however, rain treads are better. And the wrinkles in your skin act like those rain treads on wet surfaces.<\/span><\/li>\n<li><span style=\"font-size: 14pt;\">A very long time ago, this would have helped our ancestors dig and work in a wet environment to collect food from underwater, especially in fast-flowing water like in a river.<\/span><\/li>\n<li><span style=\"font-size: 14pt;\">However, some scientists tested this idea and found having wrinkled fingers often did not improve the grip. \u00a0So maybe this isn\u2019t the answer after all.<\/span><\/li>\n<li><span style=\"font-size: 14pt;\">As for your toes, they haven\u2019t tested those yet. But when you have to move fast on wet ground, wrinkly toes might have better gripping qualities too. And that might have made a difference to some distant barefooted ancestor fleeing a predator in the rain. It\u2019s like those bumps at the bottom of your Pajama Footie or sock!<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><span style=\"color: #000000; font-size: 14pt;\"><strong>Let\u2019s put this theory to the test.<\/strong><\/span><\/p>\n<p><span style=\"font-size: 14pt;\"><strong><em>Step 1: <\/em><\/strong><em>Try to take wet objects sunk in the water and move them to a dry surface as fast as you can!<\/em><\/span><\/p>\n<p><span style=\"font-size: 14pt;\"><em>Use a timer to note your speed.<\/em><\/span><\/p>\n<p><span style=\"font-size: 14pt;\"><em>Now soak your hands for at least 5 minutes in warm water until you have wrinkles.<\/em><\/span><\/p>\n<p><span style=\"font-size: 14pt;\"><strong><em>Step 2:<\/em><\/strong><em>\u00a0Repeat step 1 and note your time.<\/em><\/span><\/p>\n<p><span style=\"font-size: 14pt;\"><em>Were you faster or slower with wrinkled hands? <\/em><\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-size: 14pt;\"><em>Do you have your best guess on why do we get wrinkles when we take a bath? Share with us your thoughts!<\/em><\/span><\/p>\n<h2><span style=\"color: #000000; font-size: 14pt;\"><strong>Why aren\u2019t our fingers always wrinkly?<\/strong><\/span><\/h2>\n<p><span style=\"font-size: 14pt;\">Wrinkles might make it easier for your skin to get injured or\u00a0make it harder to feel the sensation.<\/span><\/p>\n<p>&nbsp;<\/p>\n<h1><span style=\"color: #000000; font-size: 18pt;\"><strong>A bonus question! Why do I get goosebumps?<\/strong><\/span><\/h1>\n<p><span style=\"font-size: 14pt;\">Goosebumps serve no purpose in modern humans. It\u2019s a physiological and emotional reaction that stimulates the adrenal gland in the body to produce adrenaline. The adrenaline causes the <strong>arrector pili<\/strong> muscle, which is attached to hair follicles, to contract. The contraction of this muscle leads to a shallow depression of the skin surface that causes everything around them to stand up, including our hair. This reflex is physiological and emotional. It occurs due to a sudden drop in temperature or feelings of panic, anger, or extreme fear. Goosebumps fluffed up the body hair of our ancestors who were much furrier or hairier to help trap heat or make them look larger to threatening animals. Today, goosebumps just make you look like you feel cold and you need to layer up. Goosebumps got their names because they resemble the goose skin underneath the feather.<\/span><\/p>\n<h1><span style=\"color: #000000; font-size: 18pt;\"><strong>Fun Facts about the skin!<\/strong><\/span><\/h1>\n<p><span style=\"font-size: 14pt;\">Here are 8 facts about your skin:<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 14pt;\">The skin is the largest organ of the body and it is an external coat.<\/span><\/li>\n<li><span style=\"font-size: 14pt;\">It makes up 16% of your body weight.<\/span><\/li>\n<li><span style=\"font-size: 14pt;\">It covers about 22 square feet (around 2 square meters).<\/span><\/li>\n<li><span style=\"font-size: 14pt;\">Your skin serves as an external guard for your inside organs and serves as a barrier that keeps germs and dirt out preventing them from entering your body.<\/span><\/li>\n<li><span style=\"font-size: 14pt;\">It protects your body and keeps it from drying out.<\/span><\/li>\n<li><span style=\"font-size: 14pt;\">Skin can also help keep you cool during hot weather and warm during cold weather. In cold conditions, your skin\u2019s blood flow drops very low \u2013 retaining heat in the centre of the body and preserving the flow of warm blood to the important organs within the body. Skin and the fat layer beneath it also act as good insulators. When in a hot environment, or when generating heat from muscle activity, skin vessels open up \u2013 potentially increasing skin blood flow and you sweat. The skin, therefore, turns into a heat radiator. The evaporation of sweat from the skin cools the body down.<\/span><\/li>\n<li><span style=\"font-size: 14pt;\">The skin sheds 50000 dead skin every single minute and totally replenishes itself every 4 weeks.<\/span><\/li>\n<li><span style=\"font-size: 14pt;\">Skin is thickest on the palms and soles of the feet (1.5 mm thick), while the thinnest skin is found on the eyelids (0.05 mm thick).<\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 14pt;\">Do you want to learn more about the skin and its diseases and how you can make your own skin model? Inquire about our <a href=\"https:\/\/littlemedicalschool.com\/ottawa\/little-medical-school-4-teen\/\">teens&#8217; program.<\/a><\/span><\/p>\n<p><span style=\"font-size: 14pt;\">https:\/\/youtu.be\/S12dlwQxOHw<\/span><br \/>\n<span style=\"font-size: 14pt;\"><em>We are certain your kid asks you health (human &amp; animal) questions that genuinely leave you stumped! Leave a comment below and we are happy to answer \u201cwhy\u201d in future blogs.<\/em><\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-size: 14pt;\"><strong>Copyright \u00a9 2020 Little Medical School Ottawa<\/strong><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Author: Layal Bou Abdo, MSN Illustrator: Angeline Boswell 15\/06\/2020 &nbsp; This\u00a0remains a mystery! \u00a0\u201cPruney\u201d fingers and toes are another representation of wrinkles when you take a bath! The wrinkles on your skin happen when you stay in the bath or soak your hands or feet for around 5 min in warm water, and it also&hellip;<\/p>\n","protected":false},"author":67,"featured_media":6352,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[22],"tags":[],"class_list":["post-4242","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Why do I have wrinkles when I take a bath? &#8211; Ask the Little Medical School<\/title>\n<meta name=\"description\" content=\"Wrinkles on the skin after a bath is also called \u201cPruney\u201d! 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