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skeleton

File:Horse_and_Man.jpg · Wikimedia Commons · See Wikimedia Commons

EntityQ7881· pop 144· linked from 1,357 articles

Also known as skeletal system, bones

A skeleton is the structural frame that supports the body of most animals. There are several types of skeletons, including the exoskeleton, which is a rigid outer shell that holds up an organism's shape; the endoskeleton, a rigid internal frame to which the organs and soft tissues attach; and the hydroskeleton, a flexible internal structure supported by the hydrostatic pressure of body fluids.

AI overview

A skeleton is the structural frame that supports an animal's body, and different animals have different types depending on their needs. The three main types are the exoskeleton (a rigid outer shell), the endoskeleton (a rigid internal frame inside the body), and the hydroskeleton (a flexible structure supported by fluid pressure).

AI-generated from the Wikipedia summary — may contain errors.

Key facts

Anatomy.Name
Skeleton
Anatomy.Greek
σκελετός
Anatomy.Image
Horse and Man.jpg
Anatomy.Caption
A horse and human skeleton placed in a display at Australian Museum in Sydney

via Wikipedia infobox

Research

998,868 papers

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Wikidata facts

Image
Whale skeleton 3.jpg
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via Wikidata · CC0

~17 min read

Article

24 sections
Contents
  • Etymology
  • Classification
  • Exoskeletons
  • Endoskeletons
  • Rigidity
  • Hydrostatic skeletons
  • Cytoskeleton
  • Vertebrate skeletons
  • Amphibians and reptiles
  • Birds
  • Fish
  • Mammals
  • Marine mammals
  • Humans
  • Invertebrate skeletons
  • Arthropods
  • Echinoderms
  • Molluscs
  • Sponges
  • Cartilage
  • See also
  • References
  • Bibliography
  • External links

A skeleton is the structural frame that supports the body of most animals. There are several types of skeletons, including the exoskeleton, which is a rigid outer shell that holds up an organism's shape; the endoskeleton, a rigid internal frame to which the organs and soft tissues attach; and the hydroskeleton, a flexible internal structure supported by the hydrostatic pressure of body fluids.

Vertebrates are animals with an endoskeleton centered around an axial vertebral column, and their skeletons are typically composed of bones and cartilages. Invertebrates are other animals that lack a vertebral column, and their skeletons vary, including hard-shelled exoskeleton (arthropods and most molluscs), plated internal shells (e.g. cuttlebones in some cephalopods) or rods (e.g. ossicles in echinoderms), hydrostatically supported body cavities (most), and spicules (sponges). Cartilage is a rigid connective tissue that is found in the skeletal systems of vertebrates and invertebrates.

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