Phylum Annelida Flashcards
meaning of annelus
little ring
Phylum Annelida are…
segmented worms
habitat of segmented worms
aquatic or terrestrial
habit of segmented worms
free living
Body cavity is a true coelom divided by?
septa
body has _____ segments
numerous
three different sections of body
prostomium (head), trunk, pygidium (anal)
respiration
cutaneous; mostly innervated by blood vessels
nervous system
anterior nerve ring, ganglia and a ventral nerve cord
circulatory system
true closed circulatory system.
excretion
nephridia
invertebrate organ, found in pairs and performing a function similar to the vertebrate kidney (remove metabolic wastes from an animal’s body)
nephridia
reproduction
sexual and asexual
development
direct
classes under Phylum Annelida
Polychaeta, Oligochaeta, Hirudinea
bristle worms with many hairs
Class Polychaeta
species under Class Polychaeta that has setae spread out to catch food and filter it
European fan worm
earthworms with few to no hair
Class Oligochaeta
storage of the eggs of the worm
clitellum
leeches
Class Hirudinea
leeches can be used in medicine, how does it help treat the patient?
it sucks out the “bad” blood
