Chapter 231: One question, three questions

Animals face rare scenes of human shyness.
The more shy the little camel is, the more cute Liu Wei thinks it is. Although its appearance looks a bit rough, it is far from being comparable to the panda masters, but the simple character can often hit the soul directly and make you love it.
Wait until the camel raises his head again.
The phone lens focuses on its face.
Liu Wei smiled and faced the popular science of the camel with a smile: "Brothers, listen carefully. I have a lot of knowledge about wild camels. Let's start with this species.
When it comes to wild camels, we naturally think of camels in our minds and compare them with them.
The roots of domestic camels are derived from humans by domesticating wild camels, but the genetics between them have changed a lot since they were reproduced.
According to scientific calculations, the genetic difference between wild camels and domestic camels is 2% to 3%. From a genetic point of view, the difference is huge. We have to treat wild camels as a separate species. "
"No! The difference is so big!"
"I thought there was a physical difference!"
"Genes have actually changed!"
"It reminds me of wild boars and domestic pigs!"
"..."
Liu Wei went on to say: "So I will now use wild camels as a separate species to popularize science.
We start with its face.
Everyone should be curious, why do wild camels move normally in the sand?
The reason is the special structure of its head.
In terms of blocking wind and sand, it can be said that no animal in the world is better than a wild camel!
The eyelashes and the hair on the edges of the ears are long and dense, which can effectively prevent wind sand from entering its eyes and ears. At the same time, it has double eyelids, and the eyelids on both sides can be opened and closed independently, which can still maintain clearness in the diffuse wind sand. Vision.
Do you know what the eyelid is? "
The audience looked dazed.
I haven't heard this professional vocabulary.
Liu Wei looked at the barrage and sighed. Sure enough, he watched the live broadcast to watch the excitement. As soon as he mentioned cultural common sense, he collectively questioned the face.
Liu Wei did not fiddle with the eyes of the little camel, fearing that the female camel who was drinking water thought it was hurting its child, and then produced a behavior similar to spitting saliva.
Flip the live camera and focus on your eyes.
Liu Wei gently lifted his eyelashes and opened his upper eyelids. "You look carefully at my eyeballs. The eyelids are in this position in front of my eyeballs.
The eyelid is composed of skin, connective tissue, muscles, glands, and conjunctiva. The eyelid is divided into upper and lower eyelids, which is an important structure for protecting the eyeball. The wild camel has a double eyelid, which is equivalent to double protection for the eyeball. "
Liu Wei let go of his hand and blinked, his tears almost came out.
"Hahaha, Awei is too difficult to meet our fans!"
"Awei, I still don't understand, what should I do?"
"Laughing and crying, are you mad at Awei?"
"Awei, I'm a sister, come and blow your eyes for you!"
"Go!" Liu Wei disgusted and continued the science. "Speaking of ears and eyes, let's look at its nostrils again. There are valves in the nostrils of the wild camel. I know you guys have to ask what the valve is?
Let me just talk about it!
The valve is a membrane-like structure that can be opened and closed in the organs of humans or certain animals. In human organs, it mainly refers to the valves of the heart. Each person has four valves in the heart.
That is, the aortic valve connecting the left ventricle and the aorta, the pulmonary valve connecting the right ventricle and the pulmonary artery, the mitral valve connecting the left atrium and the left ventricle, and the tricuspid valve connecting the right atrium and the right ventricle.
They all act as one-way valves, so that blood can only flow from one direction to the other and not back.
The valve in the nostrils of the wild camel acts as a valve like the heart valve of the human body. It can be opened and closed at will, which can ensure the smoothness of breathing, and can prevent the sand from flowing into the nostrils, and the water flowing from the nose can also flow down. The nasal grooves flow into the mouth.
Having talked here, I would like to ask if anyone has tried drinking water with a nose?"
"I feel Awei is digging for us!"
"Do not hide, I have done it!"
"+1"
"It feels like I can only say...Shu...to serve!"
Liu Wei said with a smile: "Fortunately, it has flowed into the mouth, not into the brain!"
The audience did not react immediately.
"Wait, Awei, can you talk aside?"
"Did you just want to say that our brains are flooded?"
"Lying trough, I just reacted!"
"Awei, you are inflated, and dare to laugh at the audience and your parents!"
Liu Wei looked at the barrage and said with a smile: "Take a joke with everyone and adjust the atmosphere.
Let's go on. Through what I just explained, everyone should have an overall impression that the wind and sand cannot be poured from the face of the wild camel, so they can be worn in sand and dust weather. If they encounter sand storms and strong sand storms In the weather, they will stop to find a safe place, close all the organs of the head, and then bend their limbs to lie on the ground and retract their bodies, waiting for the dust storm to pass. "
"I know this, like an ostrich!"
"Dust storms are generally very short and will pass quickly, but they are very destructive!"
"I watched this in many TV series. When encountering this kind of weather in the desert, there is a great chance of following the camel."
"Awei, do you say you will encounter a sandstorm today?"
"Puff~, crow mouth, can you hope Awei is better?"
Liu Wei glanced at the weather, "The weather in the desert Gobi Desert is changing abnormally. I'm not sure. If it really happens, the brothers can only pray for me!"
With a smile, Liu Wei was still very calm. When he walked to the side of the camel, the phone pointed at the two humps that the camel had just formed and said, "Everyone should be familiar with this raised thing! Mention camel, The most representative physical feature is also the first thing in our mind that should be the hump.
Let me look at the barrage. How many people understand the hump of a camel? "
"I know, it stores water!"
"There can be a lot of water in it!"
"It's water!"
Liu Wei looked at the barrage and shook his head, "Brothers, you are still alive in the past!"
The audience didn't understand Liu Wei's meaning, and all of them put out question marks.
Liu Weike said: "In the past, intuitive feelings and guesses suggest that the camel's hump is used to store water, but after scientific research, the main structure of the hump is fat and connective tissue.
It can be understood that the storage of fat, the hump will also change in size due to the wild camel's body consumption, but when it obtains sufficient food water replenishment, it will quickly return to its original state.
The connective tissue is composed of cells and a large amount of intercellular substance. The intercellular substance of the connective tissue includes liquid, colloidal or solid matrix, filamentous fibers and continuously circulating and renewed tissue fluid. It has connection, support, nutrition and protection. And many other functions. "
The question mark on the live phone is still full of screen.
"Awei, what are you talking about?"
"I feel like I'm listening to heavenly books!"
"Awei, forget it!"
"Laughing and crying, sorry, Awei, I have no face to be your fan!"