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Homo Sapiens. Страница 38

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  • Homo Sapiens

    "Man is 70 percent water." You've probably heard this phrase for many times😁 So we decided to lift the veil of mystery for you - it's not entirely unreliable. The percentage of fluid in the body depends on a huge number of factors! That's why, for example, in a woman's body it is 50-55%; in a man the fluid takes up 60-65% of his body weight; and in infants this figure is 65-75% at all. And that’s provided that the body is healthy, otherwise the figures change. It's also not quite correct to call it "water" - the fluid in our bodies has all sorts of forms. Blood, liquor, lymph, interstitial fluid, mucus, and others. Water is only the basis for these fluids☝🏻

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    The most frequent localizations of the cancer process☝🏻 Of the unnamed ones, prostate and uterine cancers, as well as colon cancer, are worth mentioning.

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    Ribs are not bones. To be exact, not all bones. The ribs continue into the rib cartilages. They are bands that serve to lengthen the ribs forward and contribute to the elasticity of the rib cage. The rib cartilages are at the anterior ends of the ribs☝🏻

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  • Homo Sapiens

    No universal donors exist That’s a highly outdated myth👐🏻 The universal donor used to be considered people with the first negative group - 0(I)Rh-. This was assumed as it has only one H antigen, found in other blood groups. Still, incompatibility in transfusions of this blood group with others was still observed, just rarely enough. In the past doctors were willing to take this risk, but now it’s considered unacceptable. However, A-negative is still used as a universal blood group in emergency situations.

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  • Homo Sapiens

    Neutrophil extravasation The process by which this fraction of white blood cells leaves the blood vessels and moves directly to the tissues. Neutrophil extravasation is triggered by the release of inflammatory mediators, for the urgent resolution of a problem (wounds, infections, etc.). This logistic chain is honed by the body to perfection☝🏻

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  • Homo Sapiens

    The cerebrospinal fluid system. In the animation you see spaces (ventricles of the brain) where the cerebrospinal fluid circulates. The cerebrospinal fluid has many functions: Such as protection of the brain and spinal cord from mechanical influences, ensures constant intracranial pressure and water-electrolyte constancy. Also, it supports trophic and metabolic processes between blood and brain, excretion of its metabolic products.

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    My friend started a channel where he explains complicated things from the world of cryptocurrency in simple language. Sign up and start trading in a week - @crypto_for_dummie

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    3D model of the coronavirus The name is related to the structure of the virus, whose spike-like outgrowths resemble a solar corona. The purpose of the "corona" in coronaviruses is due to their specific mechanism of penetration through the cell membrane by mimicking "false molecules" of molecules to which the cells' transmembrane receptors respond. Once the receptor captures the fake molecule from the "corona," it is pushed through by the virus into the cell, and the RNA of the virus enters the cell behind it.

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    Hemangioma in children is a benign vascular mass resulting from embryonic abnormal development of blood vessels. Hemangiomas appear as red, purplish or bluish spots with a flat or elevated surface above the skin; hemangiomas are prone to intensive growth and bleeding.

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    🔮 You are suitable for each other: Aries + Aries = Fighting, arguing Aries + Taurus = Short term relationship Aries + Gemini =...read more

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    Is the shape of our ears affecting the way we hear? Surprisingly, it does. The shape of our ears is as unique as our fingerprints. Scientists have hypothesized that since ear shells are distinct, each person's brain must memorize the shape of the ears in order to accurately process auditory information. An experiment was conducted involving people wearing plastic ear pads that changed the shape of their ears. This actually had an effect on hearing. After the pads were removed, it took a few more weeks before the subjects were able to hear normally again

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    Macroscopic image of the fetus at 8 weeks of pregnancy.

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    Besides memory, we also have a meta-memory, storing everything we remember (or should remember) and everything we don't. The resemblance of the brain, or rather the memory unit, to a computer is becoming more and more obvious. What's ironic is that the brain has an analogy to a list of lists! This meta-memory is responsible for the deja vu effect and "what's the name of that actor who was there?" Researchers have found that such a filing cabinet is located in our prefrontal cortex.

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    Why do men want to insert in the ass? Every man dreams of being in a woman's ass. The reason for such a strange desire is that...read more