Invertebrates animals by Oscar Zlatan Garc�a Mendoza

oscarzlatangarcia — 2025-05-26 14:53:17 UTC

a diffuse nerve net. It lacks a central brain and instead relies on a network of interconnected neurons spread throughout its body

oscarzlatangarcia — 2025-05-26 15:05:41 UTC

Starfish have a simple, decentralized nervous system lacking a central brain or ganglia. Instead, they possess a nerve ring around the mouth and radial nerves that extend into each arm. These nerves coordinate movement, balance, and respond to sensory input from the environment

oscarzlatangarcia — 2025-05-26 15:09:23 UTC

The nervous system of spiders, unlike that of other arachnids, is completely concentrated in the cephalothorax. The masses of nervous tissue (ganglia) are fused with a ganglion found under the esophagus and below and behind the brain.