1. WORM VOCAB ONLY

2. One of the external bristles on annelids ______________
A pair of nerve clusters
that serve as a brain
at the anterior end
of some invertebrates _________________
A thickened section around
an earthworm’s body that ______________
produces mucous for reproduction
Seta (Setae)
Cerebral ganglia
clitellum

3. In a flatworm, a cell that collects excess body water and transfers it to the excretory system ______________
An organism that produces both male and female gametes (sperm & eggs _________________
An infolding of the intestinal wall of an earthworm that increases surface area
to absorb more nutrients ________________
Flame cell
hermaphrodite
typhlosole

4. Fleshy flap of skin that overhangs and protects the mouth of an earthworm
________________
A NON-CELLULAR LAYER in parasitic round worms that protects them from the host’s digestive and immune system
(also seen in earthworms)_________________
A structure in a female or hermaphrodite
that receives sperm ________________
prostomium
cuticle
Seminal receptacle

5. tegument nephridia septum
A continuous sheet of FUSED CELLS that covers the external surface of a fluke or tapeworm & protects the worm from the host’s digestive and immune system __________________
Tubule through which some invertebrates
(like segmented and round worms) eliminated nitrogen waste _________________
A thick wall that divides an organ ________________
tegument
nephridia
septum

6. pharynx Aortic arches scolex
In a flatworm, a muscular tube that leads to the gastrovascular cavity; in animals with a digestive tract, the part of the tract between the mouth and esophagus ______________
5 pair of muscular tubes which connect the
corsal and ventral blood vessels and force blood
through the circulatory system ________________
A knob shaped organ bearing hooks and suckers that lies at the anterior end of a tapeworm ________________
pharynx
Aortic arches
scolex

7. One of the many body segments of a tapeworm containing reproductive organs ______________
The structure that stores soil waiting to be
digested in earthworms _________________
A muscular region in the digestive tract of
earthworms that crushes and grinds food ________________
proglottid
crop
gizzard

8. The host from which the larvae of a parasitic
worm derive their nourishment ______________
A disease characterized by muscle pain and stiffness caused by a parasitic blood fluke of the genus Schistosoma _________________
A carbohydrate found in the cocoons of earthworms and the exoskeletons of some
arthropods ________________
Intermediate host
schistosomiasis
chitin