Chapter 15 Davers' Academic Lecture

For this alone, Dionia is the place that Greek doctors aspire to.

Davos broke apart the outer skin of the model's jaw and neck to reveal the channel inside: "Everyone, please see, the channels for the mouth and nose are combined into one here, and then divided into two channels—"

He pointed to the hose made of tanned leather: "We all know that the nose is used to breathe air, but the mouth not only breathes air, but also eats and drinks water. Air and food have their own channels, while After a long-term observation by doctors in the medical school, they think that this tube is going through the air, and call it the trachea. The other channel behind it passes food and water, and we call it the esophagus. Feel free to touch yourself. Below the neck, the hard bumps and bumps under the skin are the trachea.

The Gentile doctor under the pulpit really touched his neck with his hands, and realized what Davers was talking about the trachea.

"Some people may ask, when the openings of the esophagus and trachea are connected together, will food and water easily enter the trachea?" Davos said, seeing many people nodding, so he smiled: "The fact On, it's almost impossible. There is a very soft bone at the opening of the windpipe, and when we swallow, it automatically covers the opening of the windpipe, preventing food and water from getting into the windpipe. If you have Interested, when the meeting is over, you can come and have a look. Our Dionysian craftsmen have made this mannequin with exquisite skills under the guidance of doctors. It is quite accurate. However, don't break it, this model is No amount of money can buy the treasure of the medical school! Am I right, Helps."

"Yes, Mr. Davos. Usually we only use it when we are teaching, and generally it will not be touched by people." Helps laughed.

After Davos and Helps said this, the foreign doctors were all itchy, and stood up one after another and looked at the mannequin beside Davos. The scene was a little messy.

Davers continued to ask: "I heard that the young Dr. Kritos of the medical school who discovered this cartilage. For this reason, he also specially dissected live pigs and sheep, and carefully observed the movement of this cartilage. and mechanism, right?"

"Yes." Helps nodded.

"Is he here today?" Davos asked with a smile.

"coming."

"Then, ask Dr. Kritos to stand up and let everyone get to know each other." Davers laughed and said loudly.

Kritos stood up shyly under the push of his colleagues.

"Let's thank Kritos for this important discovery with warm applause!" Davos applauded first, then the audience burst into warm applause, and his classmates even whistled excitedly

Kritos was nervous and excited.

Lycasus looked at Kritos standing in front of him enviously: This doctor, who seemed to be about the same age as him, was shyly accepting the applause of the audience. When would he be as famous in Greece as he was? Isn't Tian Tian always an apprentice like a slave?

"Kritos, I look forward to your discoveries and achievements in medicine!" Davers encouraged him enthusiastically.

It seems a bit ridiculous for a young man to use the tone of an elder to encourage another young man, but most of the doctors present did not think so. And Kritos was so excited that his chest rose and fell sharply: "Okay...Okay, Mr. Davos!"

When Kratos sat down, Davos continued: "If you sometimes don't eat carefully, you suddenly have a cough, which is actually because the cartilage does not cover the trachea in time, causing food to enter the trachea; if a mother hugs When the baby comes to see you and tells you, 'the child keeps choking when drinking milk', in fact, it may be because of this..."

What Davos said made the Gentile doctor memorize it, confirming similar cases he had seen before.

"The air enters an organ along the trachea. After many dissections at the Dionysian Medical College, the trachea is called the lung." Davers said, breaking open the chest of the mannequin and disassembling the left lung carved from wood. ,

Show it to the public.

"As a result, the medical school's analysis found that there are two lungs on the left and right sides of our body, which are like pig urine bubbles that children play with. When air enters, the lungs expand when inhaling; when exhaling, air exits, The lungs will shrink. You may find it strange that the air enters the lungs from the mouth and nose, and then exhales from the lungs through the mouth, and it seems that it makes no sense to go back to the original point. But I tell you, we The body is the most precious treasure given to the world by the gods, it is very wonderful, and it will never do meaningless things!"

Davers looked around at the doctors under the stage and saw that they were listening intently, and said seriously: "The medical school has done many autopsies and found that after the trachea has entered the lungs, it keeps branching down into thinner tubes. Like the branches of a big tree, how big is the windpipe that we can finally see?"

Davos plucked a hair from his head and said, "Just so big! And what's the end of such a small windpipe? Who can tell me?!"

At this time, a young Dionysian doctor stood up: "It's blood vessels! We found that there are many equally small blood vessels intertwined with these trachea during dissection. These small blood vessels are two large blood vessels from the heart. Continuing to differentiate..."

"So, what are these two great vessels from the heart for?" Davers continued to ask.

"They come from different parts of the heart, one is responsible for pumping blood into the lungs and the other is responsible for collecting blood back from the lungs."

"Any noticeable difference?"

"Well... the blood is pumped out is one blood vessel, and the blood is drawn back is two blood vessels..." the young doctor replied hesitantly.

"It's different, is there?"

"Uh..." The young doctor blushed, unable to answer.

"Thank you for your answer, what's your name?"

"Strobbs of the Dionysian School of Medicine."

"Thank you for your wonderful answer, you said it well!"

Strobus, who was originally slightly frustrated, smiled again when he heard Davos' praise.

"Everyone, the air goes around in the lungs and goes out, the blood goes around in the lungs and back into the heart, if nothing happens, then our bodies are so boring that they are idle all the time. Is it possible to do such a meaningless thing?!" Davers questioned, causing everyone to ponder, and at the same time he answered categorically: "Of course it is impossible! There must be some kind of miraculous happening in the air and blood in the lungs. It's just that we can't see it with our naked eyes, just like we can't see what is infecting our wound. So what is this response? How important is it to our body?"

When the doctors heard this, they all showed great interest. While thinking, they pricked up their ears to listen to Davos's next speech.

Davers smiled: "Although I don't know what happens to the blood and the air, we can find the existence of this reaction through certain phenomena. Helps, have you carefully observed the blood in the human or animal body? ? Can you see any difference in blood?"

"Blood?" Helps pondered. To be honest, Davos did not inform him in advance of the subject of his speech today. He is accustomed to transparent air like everyone else, and he has not thought deeply about this issue. In addition, in the past two years, he went to be the director of the Ministry of Health, and concurrently served as the director of the Turiyi Hospital and the director of the Dionysian Medical College. The administrative affairs have increased, and there is no time to do medical research.

Next to Stacey Cordas is also lost in thought.

"Oh!" Someone suddenly remembered something and shouted, "It's the color! The color of blood!"

Davers looked intently, and it was Kritos who was speaking. He looked at the thoughtful and creative young doctor with admiration, and then quickly retracted his gaze: "Yes, it is the color of blood! Medicine! Doctors in the hospital, as long as you have done animal vivisections in this area, you will find that the blood that was originally dark in color entered the lungs, and when it was brought back to the heart by another blood vessel, the blood had turned bright. In the lungs, only Air and blood are flowing, so there must be something in the air that has entered the blood, and it is the color of the blood that has changed! And this kind of thing... what effect does this invisible thing do when it enters the blood?"

Helps, Stacey Cordas, Kritos... All the doctors, including Lycasus, were staring at Davos at the moment, holding their breaths, lest they miss a word.

Davos' expression also became serious: "We noticed that the blood returning to the heart is pumped all over the body by the heart, and the bright red blood is reflected in our body. Our lips are red, we Our fingers are red, and our face will become red after exercise... But when we see a person with these characteristics, we can easily judge this person with years of medical experience Very healthy and energetic. And we sometimes encounter such patients, their lips are black and purple, the ends of their hands and feet are black, their faces are blue, and their walks are trembling... We can also easily judge that this person is sick , and very sick. Isn't this the change in the body when the two kinds of blood are mixed with and not mixed with this kind of thing from the air?! Can we think that this kind of thing is as good as food? The human body is indispensable, it keeps us healthy and energetic?! Can we also make such inferences about this type of patients with purple lips and black fingertips, their trachea, or lungs, or into the lungs There is a problem with one of the blood vessels in the air, or the blood vessels returning to the heart, so that this kind of thing in the air cannot reach the whole body through the blood?!..."