{"id":4988,"date":"2022-02-02T06:10:27","date_gmt":"2022-02-02T06:10:27","guid":{"rendered":"https:\/\/sandcreekfarm.net\/?p=4988"},"modified":"2022-02-22T02:39:59","modified_gmt":"2022-02-22T02:39:59","slug":"how-many-hearts-does-a-cow-have","status":"publish","type":"post","link":"https:\/\/sandcreekfarm.net\/how-many-hearts-does-a-cow-have\/","title":{"rendered":"How Many Hearts Does a Cow Have?"},"content":{"rendered":"<p>Not many people ever ask a question like: \u201c<strong>How many hearts does a cow have?<\/strong>\u201d out of the blue. Not everybody knows the answer to such a strange question, either.<\/p>\n<p>Nevertheless, a lot of people seem to think that your typical bovine has up to four hearts in its cavernous chest. It\u2019s a weird, visceral thought that would probably tickle your curiosity a little.<\/p>\n<p>Whether that\u2019s true or not remains to be seen. And why do people think that a cow has four hearts anyway? Read on to find out!<\/p>\n<h2><strong>How Many Hearts Does a Cow Have?<\/strong><\/h2>\n<p>In short, a cow only has a single heart in its chest. It\u2019s merely a popular myth that cows have four hearts. Interestingly, the myth has evolved over the years to the point where many people believe that a cow has seven hearts!<\/p>\n<h2><strong>Structure Of A Cow Heart<\/strong><\/h2>\n<p>Out of the four chambers in a cow\u2019s heart, two are called ventricles and the other two are called atriums (or atria).<\/p>\n<ul>\n<li aria-level=\"1\">Ventricles: responsible for pumping blood out of the heart and throughout the body of the cow. You can sort of imagining them as water pumps.<\/li>\n<li aria-level=\"1\">Atriums: responsible for collecting blood and distributing them to the right ventricle. Imagine them as water valves, collecting water and directing them where they need to go.<\/li>\n<\/ul>\n<p>Anatomically, the two ventricles are referred to as the \u201cright ventricle\u201d and \u201cleft ventricle\u201d. The right one is bigger than the left and the two chambers are separated by a thick, sinewy wall called the interventricular septum.<\/p>\n<figure id=\"attachment_4990\" aria-describedby=\"caption-attachment-4990\" style=\"width: 572px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-4990\" src=\"https:\/\/sandcreekfarm.net\/wp-content\/uploads\/2022\/02\/Structure-Of-A-Cow-Heart.jpg\" alt=\"Structure Of A Cow Heart\" width=\"572\" height=\"372\" srcset=\"https:\/\/sandcreekfarm.net\/wp-content\/uploads\/2022\/02\/Structure-Of-A-Cow-Heart.jpg 572w, https:\/\/sandcreekfarm.net\/wp-content\/uploads\/2022\/02\/Structure-Of-A-Cow-Heart-300x195.jpg 300w\" sizes=\"auto, (max-width: 572px) 100vw, 572px\"><figcaption id=\"caption-attachment-4990\" class=\"wp-caption-text\">Source: healthwise.net<\/figcaption><\/figure>\n<h3>How it works<\/h3>\n<p>The first stage of a cow\u2019s circulation system involves the right atrium, which contains oxygen-poor (deoxygenated) blood. This blood is directed to the right ventricle through a valve called the tricuspid valve. There, the right ventricle pumps the blood to the lungs, where it picks up oxygen and becomes oxygen-rich (oxygenated) blood.<\/p>\n<p>This oxygenated blood is pumped back to the heart and enters the left atrium through pulmonary veins. From the left atrium, the blood is then delivered to the left ventricle, through the mitral valve, and out to the aorta. The aorta distributes the oxygenated blood throughout the cow\u2019s body.<\/p>\n<p>At the end of this process, the blood becomes oxygen-poor again as the organs have already consumed all of it. The blood is then pumped back to the heart, into the left atrium, and the circle begins again.<\/p>\n<p>If this sounds suspiciously like your high school biology class, particularly the unit on the human heart, then you\u2019re correct.\u00a0 This architecture isn\u2019t unique to cows. The hearts of mammals everywhere have virtually the same structure, including humans!<\/p>\n<h3>Cow\u2019s heart vs human heart<\/h3>\n<p>The human heart also has four chambers \u2013\u00a02 ventricles, 2 atriums \u2013\u00a0as well. They do the exact same jobs described above.<\/p>\n<p>The only difference between a cow\u2019s heart and a man\u2019s heart is the size and weight. A human heart weighs only around 7 to 15 ounces. Meanwhile, a cattle\u2019s heart can weigh up to 5 pounds. It\u2019s also much <a href=\"https:\/\/www.whitman.edu\/academics\/majors-and-minors\/biology\/virtual-pig\/circulatory-system\/cow-heart\" target=\"_blank\">larger in size<\/a> than ours.<\/p>\n<p>Due to all the similarities, cow hearts are often used in medical classes to simulate a human heart. Medical students can dissect and learn about anatomy without having to actually sample a real human heart.<\/p>\n<h2><strong>Why Do People Think: Cows Have 4 Hearts?<\/strong><\/h2>\n<p>Like I said earlier, there is a good chance that the \u201ccows have 4 hearts\u201d myth arose from the fact that its heart has four chambers and someone misinterpreted that as \u201chaving 4 hearts\u201d.<\/p>\n<p>This isn\u2019t the only myth that people had thought up about cows throughout history. Other than having multiple hearts, there are stories of <a href=\"https:\/\/sandcreekfarm.net\/how-many-stomachs-does-a-cow-have\/\" target=\"_blank\" rel=\"noopener\">cows having four stomachs<\/a> (they only have one), no teeth (they do), and their knees bending the wrong way (they bend backward just like humans do).<\/p>\n<p>Now, back to the heart. This intriguing misconception wasn\u2019t born out of nowhere. While a cow only has a single heart, its heart is separated into four chambers. It\u2019s likely that people in the past mistook these chambers as separate hearts of the cow.<\/p>\n<p>Because this is a popular myth, nobody really knows who, where, and when this myth cropped up. All we know is that a lot of people seem to believe this.<\/p>\n<h2><strong>What Can We Do with Cow Hearts?<\/strong><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-4989\" src=\"https:\/\/sandcreekfarm.net\/wp-content\/uploads\/2022\/02\/cow-heart.jpg\" alt=\"cow heart\" width=\"450\" height=\"615\" srcset=\"https:\/\/sandcreekfarm.net\/wp-content\/uploads\/2022\/02\/cow-heart.jpg 450w, https:\/\/sandcreekfarm.net\/wp-content\/uploads\/2022\/02\/cow-heart-220x300.jpg 220w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\"><\/p>\n<p>There are many uses for bovine hearts. One of which is, of course, for scientific dissection purposes since it\u2019s so similar to the human heart.<\/p>\n<h3>Cooking<\/h3>\n<p>Cow hearts are edible and can be found in many recipes and delicacies worldwide. It\u2019s often mixed in with livestock internal organs called offal. Offal is edible, very dense in nutrients, and cheap.<\/p>\n<p>However, since most westerners shun it, offal is only ever used as feed for animals. In other parts of the world, particularly in Asian countries, offal \u2014 including cow\u2019s heart \u2014\u00a0is used in many recipes and served as delicacies.<\/p>\n<h3>Medicine<\/h3>\n<p>Remember how the cow heart is very similar to the human heart? It turns out that the degree of similarity is so great that you can graft pieces of a cow\u2019s heart to human suffering from heart failure, too. Typically, heart valves are removed from a cow and donated to a person with defective valves.<\/p>\n<h3>Fertilizer<\/h3>\n<p>Discarded cow hearts can make for a good fertilizer base. Just bury it in the soil and all of the bacteria in the soil will do the rest. Nutrients are broken down and soaked into the ground, feeding the plants growing nearby. It\u2019s a perfectly natural way to recycle.<\/p>\n<h3>Animal Feed<\/h3>\n<p>This point has already been mentioned. In countries where offal is not eaten, spare animal parts are fed to other animals.<\/p>\n<blockquote><p><strong>Read more:<\/strong> <a class=\"row-title\" href=\"https:\/\/sandcreekfarm.net\/can-you-ride-a-cow\/\" target=\"_blank\" rel=\"noopener\" aria-label=\"\u201cCan You Ride A Cow? How To Train A Cow To Ride?\u201d (Edit)\">Can You Ride A Cow? How To Train A Cow To Ride?<\/a><\/p><\/blockquote>\n<h2><strong>FAQs<\/strong><\/h2>\n<h3>1. How do we know that cows have one heart?<\/h3>\n<p>This problem has been very well researched over the years. Scientists regularly dissect cows to learn about their anatomy, including the heart.<\/p>\n<p>If you need more concrete evidence, you can drop by your local butcheries to ask around. Watching a newly-butchered cow, you will see that it only has one heart in its chest.<\/p>\n<h3>2. What animals have more than one heart?<\/h3>\n<p>Though it may sound bizarre, an animal having several hearts isn\u2019t unheard of in nature. They can be found all over the world and may even be in your local area.<\/p>\n<p>However, that they exist doesn\u2019t necessarily mean that they\u2019re common. The vast majority of animals only have one heart, so whatever species that ended up with more than one are quite special indeed.<\/p>\n<p>Here are a few!<\/p>\n<ul>\n<li aria-level=\"1\">Octopus<\/li>\n<\/ul>\n<p>An octopus can have up to 3 hearts. They\u2019re the best example of species with multiple hearts. Although there are hundreds of octopi sub-species, every single one of them has 3 hearts.<\/p>\n<p>One heart works just like ours, pumping blood throughout their body. The other 2 hearts pump blood through their gills.<\/p>\n<p>They can be found in oceans everywhere. Aside from their peculiar shape, octopi also have many special skills, such as quickly changing the color of their skin to avoid predators. Octopi are also very intelligent and may be able to use tools!<\/p>\n<ul>\n<li aria-level=\"1\">Squid<\/li>\n<\/ul>\n<p>A close sibling of octopi, squids also have 3 hearts. They serve the same function, too: one for normal circulation, two for pumping blood through their gills.<\/p>\n<p>Similar to octopi, they\u2019re distributed evenly throughout the Earth\u2019s oceans. Squids vary in size greatly. Some, like the Giant Squid, can be up to 45 feet long.<\/p>\n<ul>\n<li aria-level=\"1\">Earthworm<\/li>\n<\/ul>\n<p>Earthworms beat octopi, squids, and even the mythical four-hearted cow by having 5 hearts. These \u201chearts\u201d are rather primitive organs. So primitive that a lot of scientists don\u2019t even consider them as real hearts.<\/p>\n<p>While they\u2019re surely creepy, they\u2019re great for soil. Earthworms decompose materials, turn them into fertilizer, and help the surrounding plants grow more strongly.<\/p>\n<ul>\n<li aria-level=\"1\">Hagfish<\/li>\n<\/ul>\n<p>Hagfish live in waters that have poor oxygen content, so they have evolved to suit their environment. In total, a hagfish can have 4 hearts: one for circulation, the other three help the main heart at pumping oxygenated blood. Their hearts can continuously pump for up to 36 hours in environments with no oxygen at all.<\/p>\n<p>You can find this type of fish in the Atlantic and Pacific. They\u2019re known for producing a lot of sticky slime as a defense mechanism. Predators tend to avoid hagfish since its slime can clog up their gills and choke them to death.<\/p>\n<ul>\n<li aria-level=\"1\">Cuttlefish<\/li>\n<\/ul>\n<p>Cuttlefish is another close sibling to the octopi and squid. It also has 3 hearts: one for circulation, two for pumping blood through the gills.<\/p>\n<p>They can be found in oceans everywhere, but the largest species live around Australia. Though they don\u2019t look like they\u2019re very bright, cuttlefishes are extremely smart. They\u2019re one of the most intelligent invertebrates that we\u2019ve known.<\/p>\n<ul>\n<li aria-level=\"1\">Cockroaches<\/li>\n<\/ul>\n<p>Have you ever wondered why cockroaches are so hard to kill? One of the many reasons is that they have 13 hearts.<\/p>\n<p>The \u201chearts\u201d are arranged in a single line, each one pumps blood to the next. Because of this, a lot of scientists have disputed the claim and said they only have one heart with 13 chambers.<\/p>\n<p>No consensus yet, but for now, let\u2019s say that it has 13 hearts.<\/p>\n<p>The sheer amount of hearts that it\u2019s got makes cockroaches extremely resilient. It\u2019s nearly impossible for their hearts to fail. If one was to fail, the other 12 simply picked up the pace.<\/p>\n<blockquote><p><strong>You\u2019ll love:<\/strong> <a class=\"row-title\" href=\"https:\/\/sandcreekfarm.net\/how-much-does-a-cow-cost\/\" target=\"_blank\" rel=\"noopener\" aria-label=\"\u201cHow Much Does A Cow Cost?\u201d (Edit)\">How Much Does A Cow Cost?<\/a><\/p><\/blockquote>\n<h2><strong>Final Words<\/strong><\/h2>\n<p>So, to answer your question of <strong>how many hearts a cow has\u2026 ONE<\/strong>. More specifically, ONE heart with FOUR chambers.<\/p>\n<p>It\u2019s a strange piece of info that\u2019s only ever useful to farmers. However, now that you know, you can add this to your arsenal of fun facts and use them in weekend trivia nights or pub quizzes!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Not many people ever ask a question like: \u201cHow many hearts does a cow have?\u201d out of the blue. Not everybody knows the answer to such a strange question, either. Nevertheless, a lot of people seem to think that your typical bovine has up to four hearts in its cavernous chest. It\u2019s a weird, visceral [&#8230;]\n","protected":false},"author":1,"featured_media":4990,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-4988","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cow"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How Many Hearts Does a Cow Have? - Sand Creek Farm<\/title>\n<meta name=\"description\" content=\"How Many Hearts Does a Cow Have? One or Four? 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One or Four? 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