How come whenever we submerge ourselves underwater our entire body doesn’t fill with water?

Question

We have a lot of orifices and how does our body block off the water pressure from consuming us?

In: 1

Answer 1

Few things to bear in mind:

1) The human torso is airtight and has no space for water.

2) The introduction of water into the torso is a bad bad thing. Water is full of contaminants and bacteria and viruses. Internal organs are not prepared to deal with that and infection is likely.

3) The main orifices that have access to the outside are the esophagus and the anus and both come with multiple separate seals. Both are related to the digestive system.

But, aside from wounds that open up a new hole in the torso, there’s no way for water to enter the torso.