Health Questions & Answers

Health Questions & Answers

Why do we feel seasick?

Why do we feel seasick?

Seasickness, like any other motion sickness, is caused by unusual movement. The tossing of a ship on rough seas upsets the relation between what the eyes see and what the balance mechanism of the inner ear (vestibular system) feels. The eyes adjust to the movement, while the inner ear does not. These conflicting signals result in uneasiness, belching, headache and …

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Why are rays emitted during a solar eclipse considered harmful for the naked eye?

The sun can be viewed safely with the naked eye only during the few brief seconds of a total solar eclipse. Partial eclipses are never safe to watch without taking special precautions. Even when 99 percent of the sun is obscured during the partial phases of a total eclipse, the remaining photospheric crescent is intensely bright and cannot be viewed …

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Why is the Adam’s apple called so?

Another name for the larynx is the voice box, and it’s in the throat. The larynx is what gives you your voice, whether you’re talking, laughing, whispering, singing, or screaming! You can find your larynx by touching the front of your throat and humming. When the larynx grows larger during puberty, it sticks out at the front of the throat. …

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Why do you catch a cold?

The most contagious disease in the world is the common cold. Colds are actually infections of the mucous membranes of your nose and throat, but sometimes they spread to your air passages and lungs. The germs or viruses, that cause these infections and make you cough or sneeze, travel through the outside air inside tiny droplets of moisture. Doctors believe …

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Why do our joints and knuckles crack?

Joints produce a cracking sound when nitrogen bubbles burst in a thick and clear fluid surrounding the joints to lubricate them, called ‘synovial fluid’. When we stretch or twist our fingers, the pressure in the fluid decreases, which leads to dissolving of gases present there, forming bubbles, through a process called “cavitation”. When the joint is stretched far enough, the …

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