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Invertebrate Brain Gallery

Many invertebrate animals have evolved a rich variety of brains (head ganglia). Unusually large brains of squids and octopuses and small but sophisticated brains of arthropods, especially those of insects, are among the most fascinating brains created on earth by natural selection. Here, photographs of invertebrates of 6 phyla, 35 orders and 47 species and those of their central nervous systems are presented, with brief explanations of their characteristics. Enjoy seeing the pictures and consider evolution of brains in invertebrates. These images can be only used for research and education freely. Providers (Dr. Makoto Mizunami) have copyright for images and documents.

Damon variegates Back to the top page of brain gallery
udemushi.jpg
udemushi_nou.jpg
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Author Comment
Kuramochi
2007-09-28
16:03
Tailless whip scorpion, African whip spider/ Damon variegatus
Body length: 2.8 cm.
Whip spiders (Amblypygi), or tailless whip scorpions, are a conspicuous group of arachnids with extremely long raptorial pedipalps and a pair of long, antenniform first legs used as sensory organs. Many of them are found in humid tropical and subtropical regions, especially in rainforests and caves worldwide. They are fast and agile. Despite their bizarre appearance, they are non-venomous.
The central nervous system is fused into a single giant ganglion. Ventral part of the ganglion consists of subesophageal, thoracic, and abdominal ganglia all fused together, and the cerebral ganglion (brain) sits atop the fused structure. The ganglion sends off many peripheral nerves, which innervate sensory organs, muscles and visceral organs.

Infomation

ID54
AuthorKuramochi
Date2007-09-28
SeqC12
Views6370
Keyword

Arthropoda
  • Arachnida
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