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(New page: {{CompPsy}} '''Prehensility''' is the quality of an organ that has adapted for grasping or holding. Examples of prehensile body parts include t...)
 
 
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{{CompPsy}}
'''Prehensility''' is the quality of an [[organ (anatomy)|organ]] that has [[Adaptation (biology)|adapted]] for grasping or holding. Examples of prehensile body parts include the [[tail]]s of [[New World monkey]]s and [[opossum]]s, the trunks of [[elephant]]s, the tongues of [[giraffe]]s, the lips of [[horse]]s and the [[proboscis|proboscides]] of [[tapir]]. The hands of [[primates]] are all prehensile to varying degrees, and many species (even a few [[human]]s) have [[prehensile feet]] as well. The [[claw]]s of [[cat]]s are also prehensile. Many extant lizards have prehensile tails (geckos, chameleons, and a species of skink). The fossil record shows prehensile tails in lizards (Simiosauria) going back many million years to the Triassic period - Celeskey (2005).
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[[Image:Prehensile (PSF).png|thumb|A [[prehensile tail]].]]
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'''Prehensility''' is the quality of an [[appendage]] or [[organ (anatomy)|organ]] that has [[Adaptation (biology)|adapted]] for grasping or holding. The word is derived from the [[Latin]] term ''prehendere,'' meaning "to grasp."
   
Prehensile tails in animals such as monkeys are articulated and thus limited to some degree in flexibility. Zippel (1994) discovered that Corucia zebrata - underlined, the Solomon Islands monkey skink has a prehensile tail that has a snow cone muscle structure that is loosely attached to the vertebrate but has a sronger connection to an outer shealth. This makes the tail omnidirectional and give the monkey skink the means to move one part of its tail in one direction while the other remains rigid or moves in a different direction. This is often orchestrated in an angry male establishing territorial dominance.
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==Examples==
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Appendages that can become prehensile include:
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* [[Prehensile feet]] have evolved many times across many different species
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** The hands of [[primates]] are all prehensile to varying degrees
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** The [[claw]]s of [[cat]]s are also prehensile
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* [[Prehensile tail]]s - Many extant [[lizard]]s have prehensile tails ([[gecko]]s, [[chameleon]]s, and a species of [[skink]]). The [[fossil]] record shows prehensile tails in lizards (Simiosauria) going back many million years to the Triassic period (Celeskey, 2005).{{fact|date=January 2009}}
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* Tongue - of [[giraffe]]s in particular
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* Nose - [[elephant]]s and [[tapir]]s
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* Lips - [[Lake Sturgeon]]
   
[[Proboscis]]es are evolutionary adaptations that have allowed species to have a great natural advantage for manipulating their environment for feeding, digging, and defense. It enables many specialized animals such as primates to use tools in order to complete tasks that would otherwise be impossible. For example, [[chimpanzee]]s have the ability to use sticks to fish for [[termite]]s and grubs.
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Prehensility is an adaptation that has afforded species a great natural advantage in manipulating their environment for feeding, digging, and defense. It enables many animals, such as primates, to use tools in order to complete tasks that would otherwise be impossible without highly specialized anatomy. For example, [[chimpanzee]]s have the ability to use sticks to obtain [[termite]]s and grubs in a manner not disimilar to human fishing. However, not all prehensile organs are applied to tool use- the giraffe tongue, for instance, is instead used in feeding and self-cleaning behaviors.
   
The word is derived from the Latin term ''prehendere,'' meaning "to grasp."
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==Notes==
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<references />
   
==See also==
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[[Category:Animal anatomy]]
* [[Prehensile feet]]
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[[category:Grasping]]
* [[Prehensile tail]]
 
   
   
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Latest revision as of 21:37, July 9, 2009

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File:Prehensile (PSF).png

Prehensility is the quality of an appendage or organ that has adapted for grasping or holding. The word is derived from the Latin term prehendere, meaning "to grasp."

ExamplesEdit

Appendages that can become prehensile include:

Prehensility is an adaptation that has afforded species a great natural advantage in manipulating their environment for feeding, digging, and defense. It enables many animals, such as primates, to use tools in order to complete tasks that would otherwise be impossible without highly specialized anatomy. For example, chimpanzees have the ability to use sticks to obtain termites and grubs in a manner not disimilar to human fishing. However, not all prehensile organs are applied to tool use- the giraffe tongue, for instance, is instead used in feeding and self-cleaning behaviors.

NotesEdit


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