Author | Transit
Produced | Technology "Knowledge" column group (public number: tech_163)
Speaking of nausea and vomiting, it is really a very uncomfortable experience. From the perspective of Chinese medicine, there is a difference between vomiting and vomiting. Generally, something is claimed as vomiting, if there is something or not as vomiting, and if there is no object, it is claimed as retching. Vomiting and vomiting often occur at the same time and it is difficult to separate them completely, so it is also called vomiting. There are many causes of vomiting, including pathological and external object stimulation.
Vomiting has become a survival skill.
Vomiting is a complex reflex action and an instinct of the human body. Vomiting can reverse the material in the stomach and part of the small intestine out of the mouth through the esophagus, and expel the harmful substances that enter the stomach, thereby playing a beneficial protective effect. Although the taste of vomiting is not very good, compared with frogs and some animals, we do not seem to be so painful to vomit. The
researchers found that if a frog eats poisonous or dangerous insects, it cannot vomit out the stomach like humans. Instead, they vomit out the entire stomach. Although it looks scary, it is a very practical survival technique.
This behavior is called total gastric ectropion, a bit like turning the pocket. The frog will wipe the stomach hanging by its mouth with its front legs to remove any food remaining in the stomach. Then they swallow the stomach back into the body, as if nothing happened. This process is usually very fast and only takes 0.3 seconds.
Some animals do not learn to vomit, and some are more powerful
In fact, frogs are not the only animals that can’t vomit. Horses, rabbits and mice are like this. This is one of the reasons rat poison is so effective. There are also some animals that have the same talent as frogs to vomit out their entire stomach, but some animals are more "excessive" than frogs.
For sharks, bones, feathers, turtle shells and other things that should not be eaten must be expelled through stomach eversion. If a shark feels dangerous, it will also use this ability, and it will vomit something out of its stomach. A shark with an empty stomach can swim to a safe place faster. Even some gluttonous sharks vomit out the food they eat so they can eat more prey.
sea cucumbers can also spit out long intestines. They are not for detoxification, but as a means of self-defense. The internal organs they eject are used to entangle and frighten predators. If necessary, sea cucumbers can even cut off the intestines by splitting themselves when escaping. The intestines of sea cucumbers grow very fast, so they seem to have no loss.
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(Original title: Frogs Can&x27;t Vomit, So They Eject Their Entire Stomachs)
(Responsible Editor: Qiao Junjing_NBJ11279)
