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Anatomy course: what is the lymphatic system?

The lymphatic system has several roles in our body: it takes int he excess 3 litres of blood from the capilaries, it sanitizes it by letting the white blood cells run through it and clean it of bacteria an viruses, it also serves us as a warning indicator when the ganglia get swollen up.

This is why the doctors check your neck ganglia to see if they are big. If yes, then you’ve got some disease lurking around.

Watch and learn about an important part of your body.

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Your body is amazing: body facts of the week

ASAP Science explains why our bodies are incredible biological machines which are much younger than we think due to cell regeneration. The cells from the stomach regenerate once in 5 days and the epidermis is shed once every 2-4 weeks and new brain cells can be born in your own brain.

The eyes can differentiate between 2.3 – 7.5 million colors and the smell is able to smell 1 trillion different odours. Losing the pinky finger you lose 50% of your hands strength and about 5 lbs in your body are bacteria.

Check the list of other body fact videos from below to get enough of you(r body) for now.

How old are you? Well, you’re younger than you think:

What makes muscles grow? Tearing them apart:

You said mucus is bad? Nope. It has bacteriophages, viruses which kill bacteria, proteins, while blood cells, other bacteria which keep you healthy and protected:

Weight loss pills? Those don’t work. You need to eat well, sleep well and train. These are the only things that will help you get thinner. Your body knows best:


Did you even see all the human blood vessels just like that?

If not, then you will see them now. The human body has about 60 000 miles of blood vessels. The blood vessels are arteries, veins and capillaries.

Three things to note:
1. arteries carry the blood from the heart to the body (they are hidden deeper inside the body)
2. capillaries connect the arteries with the veins
3. veins bring blood back from the body to the heart (they can even be seen at surface skin)

Of course, blood circulation is way more complex, but you get the idea. Here you can see more about how the heart works and how the blood flows though you:

Here is the image with the blood vessels via ASAP Science and @SciencePorn:

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What will your body do in 2015?

Quite a lot of things, actually. ASAP Science posted the banner from below. What does it say? It says that you will product 93 gallons of saliva in 2015, that your heart will beat about 35 million times and that your skin will shed about 8 lbs of skin cells.

Check the infographic from below for more info!

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If you drink 6 L of water at once you die

The guys at Reactions have created an explained video in which we learn that the dose makes the poison. For example, were you to drink 6L at once, then you would die. You die because of loss of Na ions in your body and thus the electrical activity inside us is decreased. Heart and brain stop and you die.

There are other elements, like lead that can be poisonous at any level or cyanide will kill you fast and easy in quite small amounts. Remember, better to steer clear of poisons of any kind.

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Five things you didn’t know about your body

Head Squeeze comes with the facts: being left-handed is a hereditary thing, fevers are a good thing because they kill off the viruses that are comfortable at 37.5 degrees Celsius, the brain is massive because the cortex is 3500 centimeters squared, laughing keeps you fit and the eyebrows help you see.

The last bit was a bit strange. It seems that the eyebrows stop the sweat from our foreheads from entering our eyes. Nice trick, evolution.

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Cell vs virus battle: the war inside you

This TED Lesson lets us understand how cells work and how viruses act in our bodies. Each cell is like a whole country with a center, a powerplant, protective system, factories and so on.

When a virus enters a cell special enzymes surround that virus and feed off of it, killing the virus. We need to know that a virus is 1000 times smaller than a bacterium and a bacterium is 100 times smaller than a normal cell in our body. A virus is small, but it can multiply thousands of times in each cell and then spread out like crazy.

So, watch out. When you need to take the vaccine, simply take it and let your body be prepared for the fight.

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Things that make you go “Huh?”. 10 things about your body

AllTime10 is again on the run with 10 things you didn’t knew about your body. while you’re aware of some of the things that science tells you about your body, well, you’re gonna be in it for a surprise: did you knew that you emit light?

Yep, humans send out light signals due to the metabolic processes that take part in our bodies. that light is actually 1000 times dimmer than what we can detect with out naked eyes.

Also, the acid from our stomach does not eat us because of the inner stomach cells that are mucus like and also generate bicarbonate a chemical base that when it reacts with hydrogen chloride gives out water and salt. Those cells actually generate faster than the acid is able to eat them.

In any case, we are a sort of autophages as we eat some of our cells.

Did you also knew that the appendix is not useless? It contains good bacteria that will fill the intestines if you have diarrhea and expel good bacteria along with the poop. Also, your hair could support a 2 ton car. Woot.