2020-03-26 at 7:20 PM UTC
Grylls
Cum Looking Faggot
[abrade this vocal tread-softly]
Our respiratory system does two things; it brings oxygen into the body, and it expels carbon dioxide from the body. It does this by taking air from atmosphere and passing it through smaller and smaller structures in the lungs, terminating in capillaries; these are tiny ‘veins’ that are able to pass individual molecules into and out of the blood stream.
The simplest way to imagine this respiratory system is as an inverted tree: a large trunk (the trachea) branches over and over again (bronchioles), ending in tiny leaves (alveoli) that perform the gas transfer. The alveoli are tiny structures like clusters of grapes and are covered in capillaries. The capillaries diffuse molecules of O2 into the bloodstream where they are carried around by blood cells, and take CO2 out. This mechanism is driven by pressure differences between the concentrations of O2 and CO2 in the blood cells compared to the air. The important part is surface area, as the more capillary surface area available to effect gas transfer, the better, which is why the lungs are a lot of tiny spheres instead of two giant cavities.
The gas transfer is assisted by respiration (breathing in and out). The body needs to constantly expel the carbon dioxide-rich air and bring in fresh oxygen-rich air, and this is done by changing the volume of the lungs. The diaphragm (underneath the lungs) and intercostal muscles (between the ribs) both perform work to expand the lungs. This increases the volume of the lungs and air rushes in to fill that volume in each of the small alveoli. Expiration is a mostly passive process; the muscles relax and return to their natural state, much like a stretched rubber band returning to its natural state. Active expiration requires effort from additional muscles.
There are little hairs called cilia and mucus-producing cells throughout the inside of this system. Their job is to capture waste and foreign particles that have been inhaled, and push them up and out, where they cross into the esophagus and the digestive system.
There are lots of things that can cause problems with this delicate system. If the branches are blocked, say with too much mucus, then there’s less surface area available for the gas transfer, and the person can’t get enough air with the same amount of breathing. If the bronchioles or capillaries become stiff (e.g. from smoking) or scarred, then it becomes difficult to squeeze the air out. If the lungs become damaged the alveoli can break down and the lung surface area is reduced, so diffusion is impaired. If the lungs become inflamed the airway is constricted and it becomes difficult to pass a large enough volume of air into and out of the lungs for gas transfer. If the person breathes too fast and moves a lot of air, or too slow and doesn’t move enough air, then their blood gas concentrations get out of whack. Too much carbon dioxide in the blood and the body becomes acidic, which is a problem that other organs then have to solve.
There are other problems that can happen in this system, such as the brain not getting the right signals about the amount of carbon dioxide and oxygen in the blood, or the brain being forgetful about telling the body to breathe. Those aren’t what’s happening with COVID-19.
2020-03-26 at 10:13 PM UTC
covid-19 is a fucking hoax, the flu killed 22-40 thousand people last year depending on how you count it.
which is important. because dying 'with' covid-19, as opposed to any of the other corona viruses we've all gotten sick with multiple times, is not the same as dying from covid-19. almost everyone who dies in a hospital will die with multiple new infections just from being in a hospital. you could get shot, rushed to the ER, die on the operating table, get tested positive for covid-19 with no prior symptoms, and be counted as a death for the fake news media.
probably less than a dozen have actually died from it in the USA.
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2020-03-26 at 10:17 PM UTC
yes, that was good, if you wrote it yourself, it's well written. and people have told me i'm a great editor.
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2020-03-27 at 8:34 PM UTC
Your lungs sound like faggots
