Homo Sapiens. Страница 3
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Здесь собрано: самое смешное и позитивное видео интернета😀📹 🚫Все права на видео принадлежат их владельцам Instagram: https://www.instagram.com/zaxodi_esli_hto?r=nametag Реклама: @News24lmk Простите за рекламу. Она необходима для развития проекта.
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Homo Sapiens
Macrophages as scavenger cells And, no, they do not scatter it, they collect it. Macrophages are found in almost every part of our body. Their job is to scavenge foreign cells: they take them up and absorb them. 
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Homo Sapiens
Where do the "goosebumps" on the skin come from? Everybody probably knows this feeling☝🏻 Well, it's a feature we inherited from our primate ancestors: remember how their fur rises. It's caused by the contraction of the muscles that lift the hair. Humans, as well, have preserved them, though we cannot raise the "hair up" any more. Such residual, "unnecessary" mechanisms or even organs are called rudiments📌 -
Homo Sapiens
Age-related spinal changes are inevitable Over time, the bones become less flexible and gradually shorten. The height of the vertebral bodies also decreases mainly in their front part. This is why people become shorter in height by old age☝🏻 By the way, the size and strength of the muscles also decreases along with the bones. -
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Homo Sapiens
Electroencephalogram (EEG) on the open brain, searching for the area of epileptic seizures. The electrodes are numbered to clarify the location of abnormal electrical impulses. 
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Homo Sapiens
All people have cancer cells Their appearance in the body is inevitable. Most commonly they are the result of an error in the DNA coding inside a normal cell. The newly formed cancer cell may then start its aggressive growth, but... Our immune system comes into play, with the task of destroying them in time☝🏻 This special operation is performed by special killer cells called T-killers. Here is how this process is depicted on the video. -
Homo Sapiens
In fact, the blood moves like this☝🏻 Kind of like the tremors that provide the contraction of the heart muscle. Precisely these jolts are the ones you can feel through the pulsation in certain points of our body. Thus, the blood is not moving in a continuous flow, as it is shown in the movies. -
Homo Sapiens
The main feature of a healthy cell It has only one nucleus☝🏻 Our body may also have cells without a nucleus at all, but if there are several nuclei, it's pathological. The only exceptions📌 The multinucleated cells of the liver, responsible for its regeneration, as well as the multinucleated cells of the skeletal muscles. -
Homo Sapiens
Intestinal peristalsis is the cause of those very abdominal sounds In order to move the food along the entire length of the intestine, it needs a developed muscular system. That's exactly what it has👌🏻 The muscles inside the intestinal wall contract, narrowing its lumen, thereby pushing the food lump further. -
Homo Sapiens
The fertilized egg moves to the uterine cavity It left the ovaries and was fertilized in the fallopian tube by sperm — yep, that's where it happens. All surviving sperm are waiting for it in the fallopian tubes☝🏻 It is where the egg moves in the video. -
Homo Sapiens
There is no such thing as a universal blood type This concept was abandoned quite a long time ago. The universal donor used to be considered people with the first negative group. Why are they no longer a universal donor❓ Since incompatibility of this blood group with others was still observed. Just quite rarely and these cases were not detected immediately. And when the first ones were detected, they were not given proper importance👐🏻 
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Homo Sapiens
The veins in the lower extremities have one amazing feature Do you see these little moving things? These are valves inside the vessel — you cannot find these in arteries or in veins elsewhere. They are located in the lower extremities in order to prevent the backflow of blood under the force of gravity. In this, the valves are helped by the muscles as they push the blood up when contracting ☝🏻 Moreover, the method that managed to capture these "things" is called ultrasound (USG). -
Homo Sapiens
It's not just people who go through rehabilitation Really cute video with a happy ending. A dog is being taught to walk again after a spinal cord injury. -
Homo Sapiens
Men and women have different brains Males have a slightly heavier brain, weighing almost 1,400 grams, while females have an average of about 1,300 grams. Women have more white matter whereas men have more gray one. The white matter is responsible for the connections between the hemispheres and all parts of the brain. Without it, the brain would not be able to work coherently. Another function of the white matter is to transmit data. Gray matter is responsible for perception of the world, memory, speech, and feelings. It is hard to say who is luckier, but both men and women have their advantages. 
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Homo Sapiens
This process happens tens of thousands of times in just one second Mitosis is the division of a cell resulting in two similar, genetically identical cells. It is the main tool of life for any organism -
Homo Sapiens
Coronavirus antibodies in action You can see how they block the so-called, the nipple protein, through which the pathogen interacts with all cells. Once this protein is blocked, the antibodies completely "deactivate" the coronavirus. -
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Homo Sapiens
The pacemaker on the X-ray Nope, it is not placed inside the heart, as many people think. A pacemaker is this strange "thing" near your collarbone that has "wires" coming from it. And these wires go to the heart — they transmit an impulse to the myocardium (the muscular membrane of the heart), which causes the organ to contract. On an x-ray, the heart is a bright area in the center (in medicine, this is called the opposite — darkening). 
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Homo Sapiens
A person can't control most of his muscles Have you ever wondered how the muscles of the intestine move the food or the diaphragm works without our involvement❓ The diaphragm is the muscle between the chest and abdomen that helps the lungs breathe. That's because the smooth musculature is responsible for it; all involuntary movements are made through it. Without it we wouldn't be able to live for five seconds. 
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Homo Sapiens
Location and root cause of cancer Our own DNA☝🏻 Despite the myriad of triggering factors, an inadvertent error in DNA copying remains the leading cause of cancer❗