It would depend on the arthropod. Most insects (which account for most arthropods) do not feel pain, as they lack nociceptors. However, there is evidence for pain in the fruit fly, as well as decapod crusteaceans (ex. shrimp, lobster, crab).
All arthropods have jointed appendages. The terms "arthropod" means "jointed foot". Arthropods have segmented bodies and examples of them are insects, spiders, and crustaceans.
No, arthropods do not have gastrovascular cavities. They have complete digestive systems.
parasympathetic and sympathetic nervous systems
Closed hydrovascular for echinoderms, open haemolymphatic for arthropods. ^^
The nervous and endocrine systems control homeostasis
Arthropods are complex organisms. They are made up of cells, tissues, organs, and organ systems.
Yes, they do have a nervous system.
The peripheral nervous system is divided into the somatic nervous system and the autonomic nervous systems.
open circulatory systems
The two kinds of nervous systems are sympathetic and parasympathetic. P.S. The two parts of the nervous system are Central and Peripheral.
Yes roundworms have nervous systems!
parasympathetic and sympathetic nervous systems