The woman was seven years old and had a strong kidney...... The husband is eight years old and has a solid kidney......

Xu Guangling's feeling after reading this paragraph, how to say it, I can't talk about shock, but I was really a little shocked. Pen | fun | pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

This paragraph directly solves some of his previous small doubts or things he didn't understand.

For example, in ancient times, women were fourteen and sixteen were crowned, and men were crowned sixteen, which means that they have become adults. Why do women have to wait until they are 14 and men have to wait until they are 16? Xu Guangling now understands and understands the reason why women are generally more precocious than men.

For example, menopause.

When did the term menopause appear? Xu Guangling doesn't know very well, but it shouldn't be too early. But this paragraph that Zhang Lao showed him directly told him that as early as thousands of years ago, Huaxia was in the text, and it was in the medical classics, clearly recorded the approximate years and origin of male and female menopause.

In the Western Bible, God said that God made Eve out of a bone from Adam's body. Seeing Xu Guangling finish reading it, Zhang Lao said slowly, "Modern medicine tells us that the bones on the bodies of men and women are the same, and there is no problem of more men and fewer women or more women than men, but there is a fact that seems to tell us that men and women are simply not the same species." ”

"That's the male biological clock, which is longer than the female biological clock, not a little longer, but a full eighth! If there is a genetic limit to human lifespan, if a male is 800 years old, then a woman is only 700 years old, and if a male is 400 years old, a woman is only 350 years old. ”

Speaking of this, Zhang Lao smiled at Xu Guangling, and then said: "Humble words, we talked about the problem of heartbeat a few days ago, now you can guess, male or female, which one has a faster heartbeat?

"Women, almost one-eighth?" Xu Guangling said.

Zhang Lao said: "It's about the same, but because there are other influencing factors in the data, it is not one-eighth, but due to different individual conditions, there are large differences, and it is difficult to take an average value." ”

Xu Guangling also nodded, indicating that he understood.

To put it simply, it is certain that women's overall heartbeat is faster than that of men, but it is difficult to say how much faster.

"It's still the same sentence, the pioneer, Xie Duzao. Women's metabolism is faster than that of men, which means that they mature earlier than men, and at the same time, they age faster than men. Zhang Lao said lightly, "This is a phenomenon that can be known without any data or any theory, just by observation." ”

Xu Guangling nodded.

"However, something very interesting happened. Zhang Lao smiled slightly, "Humble words, guess again, which one has a longer average life expectancy between men and women?"

There is no need to guess, just relying on the content and tone of Zhang Lao's speech at this time, Xu Guangling knows what the correct answer is.

But he was indeed curious by Zhang Lao at this time, "It stands to reason that the average life expectancy of men should be longer than that of women, and it is about one-eighth longer." But looking at Zhang Lao, what do you mean, the actual situation is just the opposite?"

"This involves an extremely important indicator of human body metabolism, blood pressure. Zhang Lao said, "Humble words, do you know blood pressure?"

Xu Guangling knew, but he didn't know.

I know that I have heard of it, and I seem to understand what blood pressure is, and I don't know if I don't know the specifics, so at this time, he nodded first and shook his head.

Seeing his reaction, Zhang Lao smiled, and then said: "There is a saying in ancient China, called Thirty Years of Hedong, Thirty Years of Hexi, which means that the course of the Yellow River is not fixed and is often diverted. The result of the diversion is that, for example, a village or something was on the east side of the Yellow River 30 years ago, but 30 years later, it is on the west side of the Yellow River. It is not the location of the village that has changed, but the location of the Yellow River channel. ”

Xu Guangling continued to nod his head, indicating that he understood.

In fact, he had heard of this sentence, and he didn't need to explain it.

But Zhang Lao asked again: "Why did the Yellow River change course?"

"Because of sediment deposits. Xu Guangling said.

In fact, there are many reasons for the diversion of the Yellow River, and there are many examples of human intervention to divert it, but even without any human intervention, the Yellow River will be diverted and the river will overflow, and the root cause of this is sediment deposition.

The riverbed is good, can accommodate so much water to flow through, but year after year, water flows here, "Yellow River", as the name suggests, the Yellow River is yellow because of turbidity, carrying a large amount of sediment, and these sediments are deposited all the way, and gradually the riverbed is "filled", causing the water level to rise, causing more and more pressure on the river channels and dikes on both sides of the river, so that some sections directly burst the embankment, causing floods, causing floods.

Pressure?

Thinking of this, Xu Guangling suddenly realized.

He seemed to understand why Zhang Lao mentioned the Yellow River when he was talking about blood pressure. Even, at this moment, another term suddenly appeared in Xu Guangling's mind, "cerebral blood vessel rupture!" -- is that the Yellow River burst in a sense?

At this moment, Xu Guangling was a little enlightened, as if he understood a lot of things at once.

Of course, he understands whether it is correct or not, and he still needs Zhang Lao to solve his doubts.

"When the blood flow in the human body, the pressure on the blood vessels is blood pressure. Zhang Lao said, "This is the same as the pressure caused by the river water on the river in the Yellow River." ”

Xu Guangling nodded.

With Zhang Lao's words, it proves that what he thought just now is probably correct, even if there is a small problem, the difference will not be too far.

"Why do you deliberately use the Yellow River as an example? Can you understand?" asked Zhang Lao again.

The Yellow River is different from other rivers in that its water is turbid and contains a lot of sediment, which is also the biggest or fundamental difference.

With Zhang Lao's special prompt, it was impossible for Xu Guangling, a good student, not to answer this question, but he still used a questioning sentence: "Because the blood of the human body, like the water of the Yellow River, contains a large number of impurities?"

Zhang Lao nodded, smiled, expressed his approval, and then said: "Human beings are just born, when they are children, and their bodies belong to the 'Heqing Haiyan' period, but as they get older, their diet, as well as the metabolism of the body itself are incomplete and imperfect, and there are some other less important reasons, which are causing more and more impurities in the blood in the body, more and more. The more impurities, the more pressure the blood puts on the blood vessels. ”

"And then the phenomenon or appearance that accompanies it is that as human beings age, their blood pressure is also rising irrepressibly and gradually until it rises to ......"

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