Phylum Platyhelminthes Flashcards
Phylum Platyhelminthes
The phylum of flatworms
Acoelomate
Without a body cavity
Auricles
The portion of the external ear not connected within the head. Also used to designate an atrium of a heart.
Cephalization
The development of a head with an accumulation of nervous tissue into a brain.
Definitive Host
An organism that supports the adult or sexually reproductive form of a parasite.
Flame Cells
They pump water and ammonia through the protonephridia. (NO HEAT OR FIRE)
Ganglia
Found in peripheral nerves; regions of gray matter made up of unmyelinated fibers.
Intermediate Host
An organism that supports the immature or nonproductive forms of a parasite.
Monoecious
An organism in which both male and female sex organs occur in the same individual
Nephridipore
Release water and ammonia from the protonephridia
Ocelli
A simple eye or eyespot in many invertebrates. A small cluster of photoreceptors.
Parenchyma
Cellular tissue lying between the body wall and the organs of invertebrate animals lacking a coelom, such as flatworms.
Proglottid
Each segment in the strabila of a tapeworm, containing a complete sexually mature reproductive system.
Protonephridia
Removes water and ammonia from the tissues.
Scolex
The anterior end of a tapeworm, bearing suckers and hooks for attachment.
