Exoskeleton is the name given to the skeletal structure located outside the body of the living being.
Exoskeletons are common in invertebrate animals, that is, animals that do not have an internal bone structure, such as vertebrates.
Unlike the skeleton of vertebrate animals, which are made of bone and cartilage, the exoskeleton is actually a tough layer or crust that surrounds the invertebrate body.
Animals that have exoskeletons usually “change their skin” from time to time – as it is popularly said. This process is called ecdysis, and is part of the growth of these animals, which change their exoskeleton as they develop.
chitin exoskeleton
Among the animals with exoskeleton, arthropods are the best known and most numerous – it is estimated that there are approximately more than a million different species worldwide.
Arthropods have the chitin exoskeleton, a substance that is waterproof and resistant, usually impregnated with layers of wax.
In some species of arthropods, such as crabs, for example, the chitin exoskeleton is reinforced with calcium carbonate, making the material even more resistant.
military exoskeleton
Human beings do not have a natural exoskeleton, as they are endowed with an internal bone structure.
However, there are several studies and technologies that try to mimic an external protective structure for the human body.
The artificial human exoskeleton has the function of protecting the body of a certain person, whether in dangerous situations or in environments where the human body would not naturally resist.
The military exoskeleton is an example that simulates this type of external protection. This equipment is worn by the military and helps protect their bodies during combat.
endoskeleton
The endoskeleton is the skeletal structure present in vertebrates, that is, when the skeleton is inside the body of the living being.
Humans, for example, have an endoskeleton.
See more about eukaryotic cell.
