Difference between endoskeleton and exoskeleton

Last update: 21/05/2023
Author: Sebastian Vidal

What are the endoskeleton and exoskeleton?

The endoskeleton and exoskeleton are two types of bone structures found in vertebrate and invertebrate animals respectively. Both skeletons have the main function of providing support and protection to the animal's body, but they have important differences between them.

endoskeleton

The endoskeleton is an internal skeleton found in vertebrate animals. It is made up of bones, cartilage and connective tissue, and provides support to the animal's body. Additionally, the endoskeleton also acts as an attachment area for muscles, allowing the animal to move.

Examples of animals with an endoskeleton

  • Humans
  • Dogs
  • Cats
  • Birds
  • Fish

Exoskeleton

The exoskeleton is an external skeleton found in invertebrate animals, such as insects and crustaceans. It is made up of a hard layer of chitin, which protects the animal's body and provides support. Unlike the endoskeleton, the exoskeleton cannot grow as the animal grows, limiting its size and movement.

Examples of animals with an exoskeleton

  • Insects
  • Crabs
  • Beetles
Exclusive content - Click Here  Difference between womb and uterus

In summary, the main difference between the endoskeleton and the exoskeleton lies in their location and composition. The endoskeleton is an internal skeleton found in vertebrate animals, and is made up of bones, cartilage and connective tissue. The exoskeleton, on the other hand, is an external skeleton found in invertebrate animals, and is made up of a hard layer of chitin.