Chapter 352
Because of this, Diónia was the ideal place for Greek doctors.
Devers pried open the skin of the model's lower jaw and neck to reveal the passage inside. "Look, the passage for the mouth and the nose are combined here, and then divided into two passages —"
He pointed at the soft tube made of tanned leather. "We all know that the nose is used for breathing air, but the mouth not only breathes air, but also eats and drinks water. Air and food go through their own passages. After a long period of observation, the doctors of the medical school thought that this passage was air and called it the trachea. The other passage behind it goes through food and water. We call it the esophagus. Everyone touched the lower part of their necks. The hard and uneven part under the skin was the trachea.
The foreign doctors under the podium touched their necks to feel the trachea mentioned by Devers.
"Some people might ask, if the opening of the esophagus and trachea are connected, wouldn't it be easy for food and water to enter the trachea?" Devers said. Seeing many people nodding, he smiled and said, "In fact, this is almost impossible. There is a very soft bone at 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 it after the meeting. The craftsmen of Diónia, under the guidance of the doctors, have made this model with exquisite skills. It is quite accurate. However, don't damage it. This model is the treasure of the medical school. No matter how much money you spend, you can't buy it! Am I right, Helps? "
"Yes, Teacher Devers. Usually, we only use it during teaching. Usually, we don't let people touch it. "Helps smiled.
After hearing what Devers and Helps said, the foreign doctors couldn't help but stand up and look at the model next to Devers. The scene was a little messy.
Devers continued to ask, "I heard that the young Doctor Kratos from the medical school discovered this cartilage. For this reason, he specially dissected living pigs and sheep and carefully observed the movement and mechanism of this cartilage, right? "
"Yes." Helps nodded.
"Is he here today?" Devers asked with a smile.
"He's here."
"Then, Dr. Kratos, please stand up and introduce him to everyone," Devers said loudly with a smile.
Kratos stood up shyly after being nudged by his colleagues.
"Let's give Kratos a round of applause for this important discovery!" Devers was the first to applaud, followed by a round of applause. His classmates even whistled excitedly.
Kratos was nervous and excited.
Lycassus looked enviously at Kratos, who was standing in front of him. The doctor, who looked about the same age as him, was shyly accepting the applause of the audience. When could he be as famous as him in Greece, instead of being an apprentice like a slave?
"Kratos, I look forward to you making more discoveries in medicine and making greater achievements!" Devers encouraged him enthusiastically.
The scene of a young man encouraging another young man with the tone of an elder seemed a little ridiculous, but most of the doctors present did not think so. Kratos, on the other hand, was so excited that his chest rose and fell rapidly. "O … okay, Teacher Devers!"
After Kratos sat down, Devers continued, "If you don't eat carefully and suddenly choke, it's actually because the cartilage did not cover the trachea in time, allowing food to enter the trachea. If a mother comes to you with a baby and tells you that 'the baby chokes and coughs when drinking milk', it may also be because of this reason …"
Devers's words were memorized by the foreign doctor, confirming similar cases he had seen before.
"Air enters an organ through the trachea. After many dissections, the Diónia School of Medicine called this trachea a lung." Devers opened the chest of the mannequin, removed the left lung carved out of wood, and showed it to everyone.
"In the end, the medical school found that there is a lung on the left and right side of our body. It's like the pig's urinary bladder that children play with. When you inhale, air enters, and when you exhale, air is expelled, and the lung shrinks. You may find it strange that air enters the lungs from the mouth and nose, and then exhales from the lungs through the mouth. It seems to be meaningless. But let me tell you, our body is the most precious treasure that the gods have given to the world. It is very wonderful, and it will never do meaningless things! "
Devers looked around at the doctors in the audience. Seeing that they were all listening attentively, he said seriously, "After many dissections, the medical school found that after the trachea enters the lungs, it continues to separate into smaller tubes, just like the branches of a big tree. How big is the trachea that we can see in the end?"
Devers pulled out a strand of hair from his head and said, "It's only this big! But what is the end of such a small trachea? Who can tell me?! "
At this time, a young doctor from Diónia stood up. "It's the blood vessels! When we dissected the trachea, we found that many of the same small blood vessels were intertwined with the trachea. These small blood vessels were formed by the continuous differentiation of two large blood vessels from the heart … "
"Then, what is the use of these two large blood vessels from the heart?" Devers 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 differences are there?"
"Well … One blood vessel pumps blood out, and two blood vessels collect blood …" the young doctor answered hesitantly.
"There are differences. Is there anything else?"
"Uh …" The young doctor blushed and couldn't answer.
"Thank you for your answer. What's your name?"
"Strobus from Diónia School of Medicine."
"Thank you for your wonderful answer. You said it very well!"
Strobus, who was slightly depressed, smiled when he heard Devers's praise.
"Everyone, the air goes in and out of the lungs, the blood goes in and out of the lungs, and the blood goes back to the heart. If nothing happens, then our bodies are so bored that we're doing these meaningless things all the time. Is it possible?" Devers asked. While everyone was deep in thought, he answered firmly, "Of course it's impossible! The air and blood must have some strange reaction in the lungs, but we can't see it with our naked eyes, just like how we can't see what causes our wounds to be infected. So what is this reaction? How important is it to our bodies? "
The doctors all showed great interest when they heard this. While thinking, they pricked up their ears to listen to Devers's next words.
Devers smiled. "Although I don't know what reaction the air and blood have, we can discover the existence of this reaction through certain phenomena. Herpes, have you carefully observed the blood of humans or animals? Have you noticed anything different about the blood? "
"Blood?" Herpes was deep in thought. To be honest, Devers had not told him the topic of today's speech. Like everyone else, he was used to transparent air and didn't think deeply about it. In addition, he had been the director of the Ministry of Health for the past two years, and he also served as the director of the Turií Hospital and the director of the Diónia School of Medicine. The administrative work had increased, and he didn't have time to do medical research.
Next to him, Stesicordas was also deep in thought.
"Oh!" Someone suddenly thought of something and shouted, "It's the color! The color of blood! "
Devers fixed his eyes on the person who spoke. It was Kratos. He looked at the thoughtful and creative young doctor with admiration, and then quickly retracted his gaze. "Yes, it's the color of blood! Doctors of the medical school, as long as you've done animal vivisection, you'll find that when the originally dark blood enters the lungs and is brought back to the heart by another blood vessel, the blood has turned bright. There are only air and blood flowing in the lungs, so something in the air must have entered the blood, and that's why the color of the blood has changed! And this thing … What does this invisible thing do when it enters the blood? "
Herpes, Stesicordas, Kratos … All the doctors, including Lycassus, were staring at Devers at this moment, holding their breath, lest they miss a word.
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