Endoskeleton
Endoskeleton
Endoskeleton (pronunciation: /ˌɛndoʊˈskɛlɪtn/) is a type of internal support structure of an animal, composed of mineralized tissue.
Etymology
The term "endoskeleton" derives from the Greek words "endon" meaning "within" and "skeletos" meaning "dried up". It refers to a skeleton that is located inside the body.
Definition
An endoskeleton is an internal skeleton that provides support, structure, and protection to the body. It is composed of bone and cartilage. Unlike an exoskeleton, which is an external skeleton, an endoskeleton is located inside the body. It grows with the organism, allowing for the possibility of larger body sizes and more complex body structures compared to organisms with exoskeletons.
Function
The primary function of the endoskeleton is to provide structural support for the body and to protect the internal organs. It also plays a crucial role in movement, as muscles are attached to the endoskeleton and work together to facilitate locomotion.
Examples
Examples of animals with endoskeletons include all vertebrates, such as mammals, birds, reptiles, amphibians, and fish. Some invertebrates, such as sponges and echinoderms, also have endoskeletons.
Related Terms
- Exoskeleton: An external skeleton that supports and protects an animal's body.
- Hydrostatic skeleton: A flexible skeleton supported by fluid pressure.
- Bone: The rigid organ that constitutes part of the vertebrate skeleton.
- Cartilage: A flexible connective tissue found in many areas in the bodies of humans and other animals.
External links
- Medical encyclopedia article on Endoskeleton
- Wikipedia's article - Endoskeleton
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