As you might expect based on its skills in camouflage and avoiding predators, the octopus possesses a well-developed nervous system as well as complex sensory organs. This development of the brain is similar between cephalopod species although the timing of lobe formation and rearrangement … The core of the cephalopod circulatory system is a series of three beating hearts. The octopus is excellent at spotting prey and reaching to just the right spot to snag it. Cephalopods have large, well-developed brains, and their brain-to-body mass ratio is the largest among the invertebrates, falling between that of endothermic and ectothermic vertebrates.. The cartilaginous cranium protects the brain. Its eyes, for example, are similar to ours and possess an iris, pupil, lens and retina. Cephalopoda Glossary A ventral view of this brain and the optic lobes can be found here . Brain size and structure. “The cephalopod nervous system: what evolution has made of the molluscan design,” in The Nervous Systems of Invertebrates: An Evolutionary and Comparative Approach, eds O. Breidbach and W. Kutsch (Basel: Springer), 115–138. Get facts about butterfly fish here. Although the basic plan of these nervous systems is similar to that of the annelids, there are several advances. Facts about Cephalopods 9: the nervous system. Cephalopod Sensory system. The nervous system emerges as distant ganglia, some of them merging and fusing later to form the cephalopod CNS (Figure 2C). Young, the leading authority on the cephalopod nervous system in the latter half of the 20th century, divided the cephalopod brain into two regions: the supraesophageal mass and the subesophageal mass. Large brain; Information processing; Giant axons; Speed proportional to size; Stellate ganglia ensure coordinated, forceful contraction -> speed! The cephalopod nervous system is best described as The most advanced amongst molluscs Although snails and some other molluscs are hermaphroditic, most molluscs are either male or … Cephalopod Nervous system. doi: 10.1007/978-3-0348-9219-3_7 The morphological and physiological adaptations that the cephalopod sensory organs and nervous system underwent during the course of evolution are briefly summarized. Cephalopods (squid, octopus and cuttlefish) have the largest brain of all invertebrates, a distributed nervous system capable of instantaneous camouflage and sophisticated behaviors, a unique body plan, and the ability to extensively recode their own genetic information within messenger RNA, along with other distinctive features. Z. The nervous system of cephalopods is the most complex of all invertebrates. The nervous system of Cephalopods is more complex than the other invertebrates since the brain is larger than other members of grastropods. 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