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Why do cats have vertical pupils?

By Amrit Gotame
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Peering into the eyes of different animals, you’ll see some extraordinarily shaped pupils. why?  Cat with vertical pupil, Image credits: catster.com It turns out that the shape of an animal's pupils is a good indicator of its ecological role. The hollow aperture in the iris, the eye's band of pigmented muscle, is marked by pupils. They're the openings via which light enters the eye, strikes the retina, and activates light-sensitive cells, triggering the visual process. Because most of the light that enters them is absorbed, pupils are black. Their size changes in reaction to light, medications, and emotional and mental states, although their basic shape differs widely between species. House cats, for example, have vertically enlarged pupils and are nocturnal predators. These formations expand dramatically in the dark, absorbing all available light. They shrink into slits when the light is bright. Cat pupils are so adaptable that their maximum area is 135 times larger than t...
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Airbags; how do they work?

By Amrit Gotame
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Even if the driver secured properly, an accident would occur at high speeds if there was no airbag. It is a significant engineering challenge to bring the human body to a stop from a high speed in less than 100 milliseconds without causing significant bodily harm. Let's have a better grasp of this life-saving technology by looking at the mechanism of airbag inflation, which is triggered by chemical explosions. Seatbelts are meant to keep the human body from moving, but they can cause internal organ injury if they apply too much stress on the chest area during an accident. Modern seat belts use a torsion bar to slightly release the seat belt in the event of a large impact on the chest. This action causes the upper body to move forward somewhat, but as the torsion bar is released, the upper body's movement is stopped. Working Mechanism of Airbags, Image credit; whyflies.org Please notice that the sear belt only arrests the motion of your upper body, omitting your neck and head, w...
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How do painkillers relieve the pain?😨😨

By Amrit Gotame
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For instance, you're at the playground and you get sand in your eyes. How do you know the sand is there? You obviously can't see it, but if you are a normal healthy human, you can feel that the sensation of extreme discomfort, also known as pain. Now, pain makes you do something, in this case, rinse your eyes until the sand is gone. How do you know the sand is gone? Exactly, because there's no more pain. There are persons who are unaffected by pain. That may appear to be cool, but it isn't. If you can't feel pain, you may unintentionally injure yourself or others. Your body's early warning system is pain. It shields you from the outside world as well as from yourself. Pain detectors are installed in most places of our bodies as we grow. These detectors are nociceptors, which are specialized nerve cells that run from your spinal cord to your skin, muscles, joints, teeth, and some internal organs. Working mechanism of pain relievers, Image credits: getbodysmart.co...
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