105 viewsBiologyOther

Why is that when we dive under water the water doesn’t automatically fill openings. How come the water pressure doesn’t like push our eyes in if not wearing goggles or rush into your nose completely or even our other hole down there. How come the water pressure doesn’t push the water into that hole ?

I’m sure our body has some inner pressure pushing outward but how is that enough to stop the water ?

In: Biology

3 Answers

Anonymous 0 Comments

when you go under water your entire body is being compressed so the pressure inside the body and outside are basically the same.

the only place where the water would gladly go into would be your lungs which is why we do everything we can to stop that from happening but when you go down and breath from an oxygen bottle even that osygen your are breathing will be under high pressure.

that is also why the decompression when coming back to the surface is such a big problem, as your entire body is being compressed that includes all the gasses that are dissolved in your blood and a sudden release of that pressure can cause these gasses to come out of the blood itself and basically cause bubbles in your blood.

Anonymous 0 Comments

For your back passage, it’s not patently open normally, it’s squeezed shut, otherwise intestinal contents would leak 24/7.

For top holes like your nose, it doesn’t normally occur when u dive because of the angle and direction you enter the water protects your nostrils from being pushed up your nostrils. In contrast if you jump in the water feet first like a pin drop and don’t block your nose, the water will rush up your nose coz of the different angle. Similarly you can swim face down in the water fine without water entering the nostrils but if u try do a somersault in the water without blowing bubbles through your nose and you’ll get that god awful feeling of water going up your nose

And for your eyeballs, they sit pretty snug in there socket and it’s blind ended so there is no where for them to be squished, and they’re filled with fluid, so the pressure of water at the surface is equal and doesn’t impact the eyeballs… obviously at extreme depths, this pressure can crush the eyeballs, but at those depths, eye ball crushing would be the least of your concerns

Anonymous 0 Comments

Well you answered your own question. The body has internal pressure (capacity) that is far greater than the water pressure. It is mostly water after all, and the other bits like your nose have air pressure reinforced by the water of your body.

If you go deeper than 30ft or so, this equation changes and water pressure overcomes your air pressure and water can be forced in your nose, but your eyes are still water filled. There is no hole there to fill.