What's the reason for crocodile's tears? What's the reason for crocodile's tears

What's the reason for crocodile's tears? What's the reason for crocodile's tears

4hw.org: we often use crocodile tears to describe a person's hypocrisy or hypocrisy. Although we rarely see crocodile tears in reality, this phenomenon exists. Can crocodile really cry? What's crocodile tears about? Let's take a look at it together.

When the fierce crocodile is cruelly devouring the weak animals, it will shed crocodile tears. So we have the familiar saying of crocodile tears, which is a metaphor for those hypocritical bad guys. Why do crocodiles cry? In fact, crocodiles' tears' is a natural physiological phenomenon. Their goal of 'weeping' is to excrete excess salt from the body.

Scientists collected crocodile tears for testing and found that the salt in them was very high. These salts could be excreted through the kidney and sweat glands, but the crocodile's kidney function is not perfect, so it can't be excreted, and it can't excrete salt through sweating, so it can only excrete salt through a special salt gland. In the middle of the salt gland of alligator is a conduit, which radiates thousands of thin tubes around, interlacing with the blood vessels, separating out the excess salt in the blood, and discharging out of the body through the central conduit, which opens near the eyes. So when the salt comes out, it's like crocodiles are really crying.