Scientists Discover Creature With 'All-Body Brain'
Summary
Scientists discovered that sea urchins have a complex nervous system throughout their entire body, similar to having a "brain" all over. This challenges previous understanding of sea urchin biology and suggests their nervous system is more advanced than previously thought.Key Facts
- Sea urchins have a nervous system that functions like an "all-body brain."
- Their nervous system has genetic features similar to the vertebrate brain.
- Sea urchins belong to the phylum Echinodermata, which includes starfish and sea cucumbers.
- These animals start life with bilateral symmetry and change to a five-part symmetry as adults.
- The sea urchin's nervous system is spread throughout its body and is headlike.
- Researchers found many different types of neurons in sea urchins, showing complexity.
- Sea urchins have light-sensitive cells across their bodies, similar to the human retina.
- Their nervous system may be regulated by light, suggesting advanced capabilities.
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