[정은지의 건방진 퀴즈] Skin accounts for approximately 16% of total body weight.
Entered 2023.09.20 07:05 Views 1 Entered 2023.09.20 07:05 Modified 2023.09.19 21:11 Views 1
There are 78 organs in our body. Which of these organs is the heaviest? [이미지=게티이미지뱅크 편집 ©코메디닷컴] ]◆ Eunji Jeong’s Cheeky Quiz_8
Q. What is the heaviest organ in our body?
① Skin
② Femur
③ Liver
④ brain
⑤ Lungs
How much do we know about our body? Let’s pretend it’s human anatomy class and take a cheeky quiz. Just as everyone’s body weight is different, the weight of the organs in our body that account for the basis of that body weight are also different. Scientists are still divided on the range of organs that are considered organs, but the number of organs agreed upon so far is 78. This includes major functional parts like the brain and heart, as well as much smaller body parts like the tongue. Organs come in various shapes and sizes depending on their roles and functions.
So which organ in our body is the heaviest? If we look at the ranking of the heaviest organs in the human body, they are in the order shown. When all parts of the body are included, the order is ① skin ② femur ③ liver ④ brain ⑤ lungs.
① Skin = Accounts for 16% of total body weight
Is anyone surprised by the skin? The heaviest organ in our body is the skin. Average weight 4,535g. Skin makes up about 16% of an adult’s total body weight. Converting this, an adult weighing 170 pounds (77 kg) would weigh about 27 pounds (12.3 kg).
This is the weight considering the ‘paniculus adiposus’, a fatty tissue located between the upper layer of the skin and the lower muscles, as a part of the skin. Some scientists previously concluded that because the peniculus adiposus is not incorporated into the skin, skin only makes up about 6% of an adult’s body weight. However, according to the Primary Care Notebook, a modern medical reference book, this fatty tissue is part of the hypodermis, the third and deepest layer of the skin, so it has become almost established that this area should be included in the category of skin. Accordingly, the skin, or the leather surrounding our body, became the heaviest thing.
2. Skeleton = Accounts for 14-15% of total body weight
Next are the bones that make up the skeleton of the heavy organs. There is some disagreement as to whether the skeleton is considered an organ, but scientists seem to rank it second only to the skin in that it accounts for the weight of the body. The adult skeleton typically consists of 206 bones. The skeleton can be considered an organ system or a collection of organs that perform physiological functions together. According to information published in the International Journal of Biological Sciences in 2019, the skeleton, the largest component of the body, accounts for about 14-15% of an adult’s body weight.
Live Science, an American science media outlet, selected the femur as the heaviest bone among bones. The femur is a long bone located between the knee and hip. According to the international academic journal StatPearls, the average femur weighs about 14 ounces (380 g) – less than 1 pound (0.4 kg). Your exact weight will vary depending on your age, gender and health. Isn’t it interesting that bones weigh slightly less than skin?
3. Liver = 1,560g
The third heaviest organ is the liver with an average weight of 1,560 g. In fact, when looking at organs in the body, the liver is the heaviest. According to the American Liver Research Foundation, the liver weighs about 3 to 3.5 pounds (1.4 to 1.6 kg). The liver is located at the top of the stomach and beneath the dome-shaped muscle below the lungs. It performs important functions such as breaking down toxins in the body and digesting food. According to Johns Hopkins University School of Medicine, the liver holds about 1 pint (about half a liter) of blood, which is about 13% of the blood supply of an adult body.
4. Brain = 1,500g
Next is the brain. The average weight is 1,500g, slightly less than a liver. From coordinating thoughts to controlling movements, the brain performs important functions in the body. It reflects its importance as much as the weight of the brain. According to information published in the Proceedings of the National Academy of Sciences (PNAS), the brain accounts for about 2% of an adult’s body weight on average. And that mass varies depending on age and gender.
At age 20, the average male’s brain weighs about 3 pounds (1.4 kg). It is said that as you age, your brain shrinks, and your weight drops to 2.86 pounds (1.3 kg) at age 65. In general, women’s brains are approximately 10% lighter than men’s brains, and when considering total body weight, men’s brains are on average about 0.2 pounds (100 grams) heavier than women’s brains.
5. Lungs = 1,300g
The average weight of a lung is about 1,300g. Did you know that the weight of both lungs is different? The right lung typically weighs about 1.4 pounds (0.6 kg), while the left lung is slightly smaller, about 1.25 pounds (0.56 kg). Adult men have heavier lungs than women. What’s interesting is that at birth, the lungs only weigh about 1.4 ounces (40 g). As we grow, the respiratory alveoli, the tiny branches (grape-shaped air sacs) of the lungs, are fully formed. According to Pediatric Critical Care, the alveoli begin to form at around age 2 when the lungs weigh about 6 ounces (170 g). It is known to be fully formed.
6. Heart = 300g
It’s not visible, but the sixth thing is the heart. The heart, located at the center of the circulatory system, weighs about 300 grams on average. Its role is to continuously pump blood into the body and deliver oxygen and nutrients to all tissues of the body. The heavy muscle fibers that make the heart beat take up most of the heart’s weight. For adult men, it is said to be about 10 to 12 ounces (280 to 340 g), and for women, it is about 8 to 10 ounces (230 to 280 g).
After the heart, the kidneys (260g per pair) are followed by the spleen (175g), the pancreas (70g), and the thyroid gland (20g). In men, this is followed by the prostate, weighing 11 g. Depending on the man, the enlarged prostate can become more than three times the average size. According to the University of Utah, it can weigh more than 2.8 ounces (80 g). When the prostate expands three times, it will be heavier than the pancreas at that moment. right?
how is it? Isn’t it mysterious that the organs working hard in my body under their own weight are mysterious? especially, Have you ever felt the weight that shakes your entire body when your heart, which weighs only 300g, is pounding with excitement? I hope you live a life that makes your heart beat with the unbearable heaviness of existence.
☞ 참고 : 1. BBC Science Focus ‘Top 10: What are the heaviest organs in the human body?’
2. Live Science ‘What are the heaviest organs in the human body?’
3. 학술저널 Gray’s Anatomy of the Human Body
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Treat yourself to ‘health’ information and ‘room’! Choose only the ‘real’ ones and solve them with a ‘quiz’ <건방진 퀴즈>. This is a health information article that breaks the existing article format and takes a more friendly approach to learning through quizzes. In keeping with the concept of a cheeky quiz, I would like to use a slightly cheeky tone. We sincerely hope for a healthy life for our readers, so we respectfully ask for your understanding when using informal language. A new series started <건방진 퀴즈>Visits once a week. If you have any questions or opinions, please be polite and send them by comment or email. I will sincerely refer to the article.
2023-09-19 22:09:32
#건방진 #퀴즈 #Brain #3rd #Heart #6th.. #heaviest #organ
