Mediterranean Hegemon of Ancient Greece Chapter 15: Davers’s academic speech

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On this basis, Dionia is the place where Greek doctors aspire.

Daves broke apart the skin of the model's lower jaw and neck, revealing the channel inside: "Look, everyone, the channel of the mouth and nose are combined here, and then it is divided into two channels—"

He pointed to a 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. Air and food are separate. After long-term observation by medical doctors, they think that this tube is going to be air, and call it the trachea. The other channel behind him, through food and water, we call it the esophagus. Everyone touches it. Touch the bottom of your neck, the harder bumps and bumps under your skin are the trachea.

The Gentile doctor at the bottom of the forum really touched his neck with his hands and experienced what Daves said about the trachea.

"Someone may ask when the openings of the esophagus and trachea are connected together, will it be easy for food and water to enter the trachea?" Davers said, seeing many people nodding, so he laughed "In fact, it is almost impossible. There is a very soft bone in the opening of the trachea. When we swallow, it will automatically cover the opening of the trachea, preventing food and water from entering the trachea. If you are interested, you can come and take a look at the end of the meeting. Under the guidance of doctors, the mannequin made by our craftsmen with superb skills is quite accurate. However, don’t break it. This model is a treasure of the medical school, and it can’t be bought for any amount of money! I’m right, Helps."

"Yes, Mrs. Davers. We only use it when we are teaching, and we usually don't let people touch it." Helps laughed.

After Davers and Helps said this, the Gentile doctors were very itchy, all stood up and looked at the mannequin next to Davers. The scene was a little messy.

Daves continued to ask: "I heard that the young doctor Cretos of the medical school who discovered this cartilage. For this reason, he also specially dissected living pigs and sheep, and carefully observed this The movement and mechanism of cartilage, right?"

"Yes." Helps nodded.

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

"Come here."

"Then, ask Dr. Cretos to stand up and let everyone get to know him." Daves smiled and said loudly.

Klitos stood up shyly under the push of his colleagues.

"Let us thank Kritos for this important discovery with warm applause!" Daves first applauded, and then there was warm applause from the audience, and his classmates even whistled in excitement

Kritos was nervous and excited.

Lykasus looked enviously at Kritos standing in front of him: This doctor, who seems to be not much different from his own age, is shyly accepting the applause from the audience, when will he be as famous as him Greece, instead of always being an apprentice like a slave?

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

A young man encourages another young man with the tone of an elder. This may seem ridiculous, but most of the doctors present do not think so. And Klitos was so excited that his chest rose and fell sharply: "Ok... Okay, Teacher Davers!"

When Cretos sits down, Daves continues: "If you sometimes don’t eat seriously, you will suddenly cough, this is actually the cartilage covering the trachea in time, causing food to enter the trachea; A mother holding a baby to see you, telling you,'a child coughs a lot when drinking milk', in fact, it may be because of this..."

Daves' words made the Gentile doctors remember in his heart, confirming similar cases he had seen before.

"The air went into an organ along the trachea. The Dionian Medical College called this trachea the lung after many times of dissection." Daves said, breaking apart the chest of the mannequin, and cutting the left side of the manikin with wood. The lungs were disassembled and shown to everyone.

"As a result, the medical school found that there are lungs on the left and right sides of our body, which are like pig urine vesicles played by children. When air enters, the lungs expand; when you exhale When the air is expelled, 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. It just turns around and returns to the original point, which seems meaningless. But I told you You, our body is the most precious treasure bestowed by the gods in the world. It is very wonderful and will never do meaningless things!"

Davers looked around at the doctors under the stage, seeing that they were all listening attentively, and said earnestly: "After the medical school has dissected the corpse many times, it is found that the trachea enters the lungs and continuously divides it down. The pipe is like the branches of a big tree. How big is the trachea that we can see in the end?"

Daves pulled out a piece of hair from his head and said: "It's just that big! And what is the end of such a small trachea? Who can tell me?!"

At this time, a young doctor of Dionia stood up: "It's blood vessels! We found many similarly small blood vessels intertwined with these trachea during the dissection. Two of these small blood vessels came from the heart. The great blood vessels are constantly differentiated..."

"So, what use are these two great blood vessels from the heart?" Daves 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 from the lungs."

"What other obvious difference?"

"Well... the one that pumps the blood is one blood vessel, and the one that collects the blood is two blood vessels..." the young doctor replied hesitantly.

"This is different, is there any more?"

"Uh..." The young doctor blushed and couldn't answer.

"Thank you for your answer, what is your name?"

"Strobus from Dionian College of Medicine."

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

Strobus, who was initially a little frustrated, smiled again when he heard Davers's compliment.

"Everyone, the air goes around in the lungs and goes out, the blood goes around in the lungs, and then back to the heart, if nothing happens, then our body is too boring, so idle Is it possible to do such meaningless things all the time?!" Davers asked, drew everyone's thoughts, and at the same time he replied categorically: "Of course it's impossible! Air and blood must have happened in the lungs." Some kind of wonderful reaction is just invisible to our naked eyes, just like we can't see what makes our wounds infected. So what is this reaction? How important is it to our body?"

When the doctors heard this, they all showed great interest. While thinking, they raised their ears to listen to Davers' next speech.

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

"Blood?" Helps was lost in thought. To be honest, Daves did not inform him in advance of the topic of today's speech. He was accustomed to transparent air just like everyone else, and did not consider this issue in depth. In addition, he has been the director of the Ministry of Health in the past two years, and concurrently served as the dean of the Turiyi Hospital and the dean of the Dionian Medical College. Administrative affairs have increased and there is no time for medical research.

Stacey Cordas next to him was also lost in thought.

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

Daves looked intently. It was Cretos who was speaking. He looked at this thinking and creative young doctor with admiration, and then quickly retracted his gaze: "Yes, it's blood. Color! Doctors in the medical school, as long as you have done this animal biopsy, you will find that the originally dim blood enters the lungs and is brought back to the heart by another blood vessel. The blood has already turned bright. Only air and blood are flowing in the lungs, so something in the air must have entered the blood, and the color of the blood has changed! And what effect does this invisible thing do when it enters the blood? "

Helps, Stacey Cordas, Cretos... All the doctors, including Lycasus, are staring at Daves at this moment, holding their breath, lest they miss any of them. Character.

Davers' expression also became serious: "We noticed that the blood returning to the heart is pumped all over the body by the heart. The bright red blood is reflected in our body. Our lips are red. Yes, 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 with many years of medical experience This person is very healthy and energetic. And we sometimes encounter patients like this, their lips are purplish, the ends of their hands and feet are black, their face is blue, and their walking is trembling... We will also easily judge this. People are sick, and they are very sick. Isn’t this the change in the body that these two kinds of blood are mixed and not mixed with this kind of thing from the air?! Can we think that this kind of thing is like Food is also indispensable to the human body. It makes us healthy and energetic? Can we also make such inferences about this kind of patients with purple lips and black fingers, their trachea, or lungs, or The blood vessels entering the lungs, or returning to the heart, have a problem in one of these ways, so that things in the air cannot pass through the blood to reach the whole body?!......"