What systems of internal organs do annelids have?

Type Ringworms are highly organized organisms.
Their musculoskeletal system is a musculocutaneous sac.
The gastrointestinal (digestive system) tract is through.
The cardiovascular (circulatory) system is closed in most worms.
Breathe with skin, or gills (marine species).
The excretory system is metanephridia.
The ganglionic nodular nervous system.
Ringworms are dioecious organisms or hermaphrodites. They are characterized by a sexual and asexual reproduction path (reproductive system).



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