An arthropod's nervous system is described as 'ladder-like' on their ventral surface or underside, with paired nerve ganglia on each segment, and their brains formed around the esophagus from fused segment nerve ganglia.
The Nervous System
They have a central nervous system, I think.
It is not likely that the annelids evolved from the arthropods is as much as they are the much simpler of the two groups of organisms. The arthropods have a well developed open circulatory system, segmented muscles and a complex nervous system (including eyes and chemoreceptors, the antennae) and an exoskeleton.
Arthropods have an internal body cavity called a hemocoel which bathes the internal organs in nutrients, and is a component of their open circulatory system.
Yes, but it is very different from the humans brain because it does not feel pain.
No they do not.
The Nervous System
Gills and a well developed nervous system
The nervous system in arthropods has been described as ladder-like, with connected ventral pairs of nerve ganglia, terminating in an esophageal brain. As with many non-arthropods, this nervous network transports or co-ordinates reflexes, mobility, sensory stimuli, etc.
Yes, arthropods have a nervous system in a longitudinally positioned nerve bundles or ganglia, with a paired formation across their ventral surface (underside) described as "ladder like", terminating in a brain around the esophagus. As with other animals it controls mouthparts, sensory functions, locomotion, etc.
They don't have a central nervous system. Just 2 ganglia.
intrinsic eye muscles are controlled by the autonomic nervous system
central
They have a central nervous system, I think.
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It is not likely that the annelids evolved from the arthropods is as much as they are the much simpler of the two groups of organisms. The arthropods have a well developed open circulatory system, segmented muscles and a complex nervous system (including eyes and chemoreceptors, the antennae) and an exoskeleton.
No, there's some kind of doohickey that connects them.