Cephalisation - определение. Что такое Cephalisation
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Что (кто) такое Cephalisation - определение

EVOLUTIONARY TREND FORMING A DISTINCT HEAD REGION IN MANY ANIMAL LINEAGES
Cephalisation
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  • movement]] the animal has head and tail ends, favouring cephalization by [[natural selection]]. Sense organs and mouth form the basis of the head.
  • advanced 'camera' eyes]].
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  • brain]] (inside the armoured [[exoskeleton]]), all concentrated at the animal's head end.
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  • [[Brain]]s of [[shark]] and [[human]] illustrate accelerating cephalization, as the parts enlarge and change shape.
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  • The yellow papillae flatworm, ''[[Thysanozoon nigropapillosum]]'', is somewhat cephalized, with a distinct head end (at right) which has pseudotentacles and an eyespot.

Cephalization         
·noun Domination of the head in animal life as expressed in the physical structure; localization of important organs or parts in or near the head, in animal development.
Cephalization         
Cephalization is an evolutionary trend in which, over many generations, the mouth, sense organs, and nerve ganglia become concentrated at the front end of an animal, producing a head region. This is associated with movement and bilateral symmetry, such that the animal has a definite head end.

Википедия

Cephalization

Cephalization is an evolutionary trend in which, over many generations, the mouth, sense organs, and nerve ganglia become concentrated at the front end of an animal, producing a head region. This is associated with movement and bilateral symmetry, such that the animal has a definite head end. This led to the formation of a highly sophisticated brain in three groups of animals, namely the arthropods, cephalopod molluscs, and vertebrates.