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Skeletal system: Difference between revisions
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[[Image: | [[Image:Human skeleton.png|frame|Human skeleton showing the axial (blue highlight) and appendicular bones.]] | ||
The '''skeletal system''' is a support and protection structure for | The '''skeletal system''' is a support and protection structure for [[animals]]. There are two main types of skeletal systems. The endoskeleton is an interal support system of the type possessed by [[humans]] and other [[vertebrates]], which is made of bone. The exoskeleton is an external system that was designed for many invertebrates such as the [[crustaceans]] and [[insects]]. The composition of exoskeletons vary widely, but known constituents include [[calcium]] [[salts]], [[protein]], [[carbohydrates]] ([[chitin]]) and silicate. | ||
There are two main types of skeletal systems. The endoskeleton is an interal support system of the type possessed by | |||
'''Main Functions:''' | '''Main Functions:''' | ||
It provides support for the overall body. | * It provides support for the overall body. | ||
It offers a place for muscle and tendons to attach. | * It offers a place for muscle and tendons to attach. | ||
It provides a great amount of protection for the vital organs inside of the creature. | * It provides a great amount of protection for the vital organs inside of the creature. | ||
It adds leverage for increased range of motion. | * It adds leverage for increased range of motion. | ||
Bones | * Bones continuously produce blood cells and store calcium. | ||
== Exoskeleton == | == Exoskeleton == | ||
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=== Main Groups === | === Main Groups === | ||
====Axial==== | ====Axial==== | ||
[[Image:Vertebral column.png|250px|thumb|right|Human vertebral column]] | |||
====Appendicular==== | ====Appendicular==== | ||
