How much do you know about these interesting cold knowledge in life?

Life is sometimes more shocking than news. There is always some cold knowledge. If you don't say it, you always take it for granted that you must know everything, but when the correct answer is published, it is really scary. Don't believe it? Let's have a look.

0 1

The length of blood vessels goes around the earth twice.

The blood vessels in our bodies, like rivers, have more than 1000 billion. If the veins, arteries and capillaries in an adult are connected together, it can be about 96 thousand kilometers, and the earth is 40 thousand kilometers a week, which means that this length can circle the earth for two and a half weeks. Have you ever been afraid? It is said that it takes 200 million cups of fragrant milk tea every year to circle the earth twice. Our human blood vessels are actually quite long and hidden in our small bodies.

0 2

It only takes 20 seconds for blood to circulate once a week.

There are so many blood vessels in the human body, how long does it take for blood to circulate in the human body for a week? The blood sent by the heart flows through the large, medium and small arteries to the capillaries of the whole body, then through the small veins, middle veins and large veins, and then back to the heart. In fact, they are very fast, and they only need 20 seconds to circulate in the body once. At this rate, blood can circulate 1 hour 180 times, 1 year1576,800 times. If a person lives to 80 years old, blood will circulate in the body 126 14400 times.

0 3

The tongue has ten thousand taste buds.

The taste buds on our tongue are mainly distributed at the front end of the tongue. There are about 200 mushroom-shaped nipples on each tongue. Under the microscope, you can also see these "little red dot" in front of the mirror. Each mushroom nipple contains at least one taste bud and as many as 20 taste buds. The total number of taste buds on the tongue is about 65,438+0,000. Besides the tongue, there are also some taste buds in the soft palate and throat. Taken together, it is estimated that a person has an average of 3000 ~ 10000 taste buds. Every taste bud contains organs that feel sweet, sour, bitter, salty and fresh taste.

0 4

Laughter can reduce stress hormones.

According to the research of Malinda University School of Medicine in California, laughter can reduce the secretion of "stress hormones" and increase the number of immune cells, which not only makes people feel happy, but also enhances immunity. So there is a scientific basis for why you laugh less than ten years. It is suggested that you can watch a funny video and share jokes or cartoons during your lunch break. These are all ways to reduce stress hormones.

0 5

The whale's heartbeat is only nine times a minute.

This is a common biological knowledge. For warm-blooded animals, the bigger the body, the longer the life span and the slower the heartbeat. For example, the elephant's heartbeat is only 26 times per minute, and its average life expectancy is 60 years old; The heartbeat of whales is only 9 times per minute, and the heartbeat of blue whales can be as low as 2 times per minute when diving, with an average life expectancy of 80 years; The rat's heartbeat can reach 500 beats per minute, and its life span is only three years.

0 6

Farts don't "disappear" automatically

When you are away from home, there are always some embarrassing times. When you hold your fart because of face, the fart will be absorbed into the blood by the intestinal wall, and the air pressure in the intestine will disappear. However, the fart did not disappear. It just enters the systemic circulation with blood, then it is filtered by the liver, squeezed by the lungs, and then "fart" comes out of the mouth. This is cold knowledge with flavor.

0 7

There is really "lazy cancer" in medicine.

According to research, there is indeed lazy cancer in medicine, but his tumor is "tumor as the name suggests" because it grows slowly, is less invasive and has low risk. In other words, having "lazy cancer" is not too difficult to treat, and there is great hope for survival.

After reading this cold knowledge, will you know it earlier like Bian Xiao? It turns out that this cold knowledge is so interesting and practical! It turns out that world creatures are really a treasure think tank, from which a steady stream of knowledge can be derived. I hope you can see a wider world through reading.

Article source: Network

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