Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/164

Click to flip

164 Cards in this Set

  • Front
  • Back
The solid mesodermal, supportive tissue which characteristically fills acoelomate animals.
parenchyma
a primitive osmoregulatory-excretory organ with tubules ending in specialized "flame cells"
protonephridium
The condition of having both male and female reproductive systems present in teh same individual
hermaphroditic
An unciliated living synctium which forms the outer convering of certian invertebrates such as trematodes
tegument
the free swimming larva of certain polyclad flatworms
muller's larva
a multinucleated mass or protoplasm resulting from the fusion of individual cells
syncytium
the eversible penis-like structure of flatworms
cirrus
a vestigial canal seen in certain flatworms which is gernerally equivalent to a vagaina
Laurer's Canal
The larval form of monogenetic trematodes
Onchomiracidium
The larval stage of monogenetic trematodes
gyrodactyloid larva
The posterior attachment organ in monogenetic tremetodes
Opishaptor
The first free swimming larva of digenetic tremetodes
miracidium
A polyembryonically produced, free-swimming or crawling larval stage of digenea
Cercariae
The encysted preadult atge in the slife cycle of most flukes
Metacercariae
The female gentital chamber where eggs are formed in certian platyhelminthes
Ootype
A germinal sac which is part of polyembryony of flukes
sporocyst
A germinal mass found in polyembryony of some flukes that is somewhat like a sprocyst but which has a pharynx, locomotory buds and an intestinal cecum
redia
attachement organ of tapeworms
scolex
the segment-like unit of the strobila of tapeworms
proglottid
the ventral sucker used for attachment in flukes
acetabulum
the ventral sucker-like attachment organ of aspidogastrids
aveola
the highly folded, specialized outer layer of the tegument of cestodes
microthrix
the larval form found in the life cycles of certian cyclophyllidean tapeworms
cysticercus
proglottids of tapeworms which have become full of eggs
gravid proglottid
the ciliated first larval stage of Pseudophyllidean tapeworms
coracidium
specialized larva of cestodarians which develop in the egg
lycophore larva
the nonciliated first larva of certian tapeworms with six hooks on the lrval cercomere
hexacanth
membrane bound, rod-shaped secretions released to the surface to form mucus
rhabdites
the nonciliated first larva of certain tapeworms which develops in the egg
oncosphere
a specialized cavity in nemertines which houses the proboscis apparatus
rhynchocoel
muscles that extend around the body of an organism
circular muscles
a membrane lining a principle cavity of an organism
peritoneum
opening of the reproductive systems of an organism to the outside
gonopore
muscles that stretch up and down the body of an orgnaism
longitudinal muscle
a feeding structure of nemertines which is ventral under hydrostatic pressure to capture prey
proboscis
larval form in the life cycle of some species of nemertines
pilidium lrva
a secondary body cavity derived from the blastocoel and located betwenn the endoderm and the mesdodermal tissues
pseudocoel
the region between the mouth and the esophagus of many invertebrates which may be muscualr and is responsible for moving food materials into the intestines
pharynx
part of a neurosecretory complex thought to be assocaited with chromatophoric display and sexulaity in certain crustaceans and gastrotrichs
x-organ
the ganglionic mass located in the pharyngeal region of inverterbrates such as the gastrotrichs
neuropile
a term used in some species of invertebrates for the "seminal receptacle"
spermtheca
anal or posterior extensions which are usually found in pairs in many invetebrate groups including the gastrotrichs
furca
a sac-like structure in the anterior end of acanthocephalans which receives the proboscis when it is invaginated
proboscis receptacle
a fluid filled system which connects with the lemnisci sacs and is located just under the tegument of acanthocephalans
lacunar system
a ligament that stetches through the pseudocoel from the anterior to the posterior of the body of acanthocephalans on which the body organs are supported
central body ligament
the combination of the proboscis and the neck of the acnthocephalans
presoma
the body of an acanthocephalan including everything except the presoma
soma or metasoma
specialized glands of male acanthocephalans which producea cement-like substance
cement glands
a specialized copulatory structure of male acanthocephala which is used to hold the female during copulation
copulatory bursa
the pouch-like structure of male acanthocephala which hydraulically controls the copulatory bursa
Saeftigen's pouch
A bell-shaped structure found in the female reproductive system which sorts out the fertilized eggs
Uterine bell
the larval stage that develops from the egg in the acnthocephalans
acanthor
the larval form of acanthocephalans which is infective to the definitive host
acanthella
a condition in any species where the male and the female are morphologically dissimilar
sexual dimorphism
a simple preoral chamber as seen in some nematodes
vestibule
a highly modified preoral or postorla chamber as seen in nematodes such as hookworms
buccal cavity
an outer nonliving body covering as seen in the nematodes which must be shed to accomadate growth
cuticle
the layer found underlying the cuticle in nematodes which is responsible for secreting the new cuticle after moling
hypodermis
a common chamber that receives both the intestinal tract and the reproductive tract and has an opeing to the outside. This is seen in male nematodes.
cloaca
a thickened region of the cuticle in female nematodes which surrounds the female genital pore forming lip-like projections
vulva
a long slender larval form seen in the life cycles of some nematodes where penetration and tissue migrations is required
filariform
a short stubby larval form seen in many nematode life cycles where penetration and tissue migration is not rquired
rhabitaform
specialized cells in which the capillary esophagus of Trichurata is embedded. These glands are thought to be secretory.
Stichosome cells
A proteinaceous rod-like structure assoc. with the genital pores of many species of male nematodes which is used to hold the female in place during copulation and to allow for the transfer of sperm to the female
spicule
a specialzed excretory cell of many nematodes which surrounds the primary excretory duct.
renette cell
the ciliated crown of members of the rotifera
corona
band-like series of cilia surrounding the meouth region of rotifers
circumapical band
the complex pharynx of the rotifers
mastax
the combined ovary and yolk gland of the rotifers
germovitellarium
a posterior, terminal appendage occuring in pairs in rotifers. This structure is also called the toe and is used for attachment.
spur
Glands found in the posterior of rotifers which produce a cement-like substance for attachment to a substrate
pedal glands
one of two discs forming the oral region of certian rotifers
trochal disc
the anterior band of cilia found on the trochal disc of certain rotifers
trochus
the posterior band of cilia found on the trochal disc of certian rotifers
cingulum
the divisions or segments in the chitinous cuticle of Kinorhyncha
zonites
the cirlet of spines at the tip and base of the protrusible cone of Kinorchyncha
scalids
the cuticular plates of the neck which close over the retracted head in the Kinorhyncha
Placids
cuticular covering as seen covering the abdomen of members of the phylum Loricifera
Lorica
the curved body spines found in several invertebrate phyla
scalids
the cone shaped anterior end of members of the phylum Loricifera
Introvert
The region between the head and the abdomen of numerous invertebrates bearing exoskeletons
thorax
the adult like larval form of members of the Phylum Loricifera
HIggins Larva
true segmentation of the mesodermal body parts as seen in annelids
metamerism
the anterior pre-segmented tip of segmented body forms
acron
the anterior, pre-segmented tip of annelids
postomium
the post-segmented end of annelids
pygidium
a double layer of peritoneum which spearates adjacent segments in annelids
transverse septa
A chitinous bristle commonly seen in certain annelids
setae
the fleshy, paired, lateral, segmentally arranged appendages of Polychaetes
Parapodia
the mouth-bearing first segment of annelids
peristomium
what are shared between Nemertinea and Platyhelminthes?
presence of Rhabdites
Subclass Digenea, what subclass and phylum?
Class Trematoda
Phylum Platyhelminthes
what kind of coelem do Acanthocpehalans have?
pseudocoel
acanthocephalans are...
pseudocoelic
roundworms are generally placed in....
nematoda
most nematodes have....
complete alimentary canal
which order of nematodes has stichocytes and egss
Trichurata
which order of Nematodes is in which the pahrynx is divided into precorpus, metacorpus and bulb
Rhabdita
free living species of platyhelminthes are in...
Turbellaria
What class are hookworms in?
Phasmidea
Which order of nematodes have a mouth surrounded by 3 well developed, trapezoidal lips
Ascaridata
which order of nematodes have a cervical allae and pharynx with a conspicuous muscular bulb
Oxyurata
which nematode order have microfilarial stages?
Filariata
Which order have 2 psuedolabia and a pahrynx composed of an anterior muscular portion and a posterior glandualr portion
Spirurata
Aspidogastrea is a subclass of...
Trematoda
In the life cycle of Digenea, the stage hat is generally infective to the host
metacercariae
the class of segemented worms which are marine and are noted for their burrowing ability
polychaets
small coelemate worms whivh generally live in the interstitial spaces of marine sand and mud, resemble flat worms ---phylum?
Gnathostomulida
common name for organism found in phylum Nematomorpha
horsehair worms
what phylum---- nervous system has anterior ganglion or nerve ring connected to 1 to 3 main longitudinal nerve fibers
Platyhelminthes
phylum---- 3 well developed muscle layers... circular, longitudinal and oblique
Platyhelminthes
phylum---- no skeletal, circulatory or respiratory sytem, has protonephrdia
Platyhelminthes
phylum---acoelomate---parenchyma fills body
Platyhelminthes
Platyhelminthes are the ____worms
flat
false segmentation ----phylum
strobilization, Platyhelminthes
Planaria's head is trangular due to presence of 2 lateral ear-like projections called
(what phylum)
auricles
In phylum platyhelminthes identification to specific levels is based on...
copullatory apparatus
what class is primarily ectoparasites
phylum?
monogenea
Platyhelminthes
have ventral sucking surface composed of aveoli and loculi
phylum
class
subclass
Platyhelminthese
trematoda
aspidogastrea
alternation of generations--asexaul- polyembryony and sexual- anisogamy
phylum?
Class?
subclass?
Platyhelminthese
Trematoda
Digenea
2 types of germinal masses of polyembryony?
sporocyst, redia
cercaria--- often bait cercaria, metacercaria essentially encysted in the tail. Often these are also macrocerous cercariae
cysticercous cercariae
cercariae---large tailed
macrocercous
cercariae--- small tail
microcerous
cercariae---lacking a ventral sucker, 2 or 3 eyespots are frequently present on the distome, the pharynx is usually absent and th tail is simple
monostome
cercariae--- ventral sucker positioned at root of tail. generally form cysts in the open. These may have eyespots.
amphistome
cercariae---may be microcercous; tail cupped on the end to form a sucking surface. stylet
cotylocercous
cercariae--- with a collar of spines around oral sucker.
echinostome
cercariae---generally hasa tail with 2 furcae and the mouth is located in the ventral surface.
gasterostome
cercariae--- tail absent
cercariae
cercariae--- styled cercariae where the oral sucker has been replaced with a specialized organ, the virgula
Virgulate
the scolex of Pseudophyllidea is a
bothridiate
the genital atrium of ______ is generally located on the midline of the ventral surface
Pseudophyllidae
which class are generally found as adults in the body cavities of "elasmobranch" fish
Cestodaria
which has an armed rostellum on the scolex?
Cyclophyllidea
what has a protein-tanned operculated egg
pseudophyllidea
most oligochates possess a region on the body which is capable of secreting the wall of the cocoon which holds eggs in the environment and produces albumin in which eggs are laid. This region is....
clitellum
what has a terrestially-based life cycle
Cyclophyllidea
Nematodes generally lack
gastrovascular system
class cestoda are the _____worms
tape
subclass eucestoda ____ ______
true tapeworms
body form has 4 distinct body regions. body form is polyzoic
subclass
eucestoda
where the reproductive organs are fully developed and eggs are starting to be produced
mature proglottids
where the reproductive organs atrophy and the proglottid becomes filled with eggs
gravd proglottids
infective larva in order Trypanorhyncha
phylum?
Plerocercus
Platyhelminthes
order---- have an acetabulate scolex and 4 acetbula and 5th apical sucker or apical gland
phylum?
Proteocephalata
platyhelminthes
order---bladder worm
phylum?
Cyclophyllidea
2 orders in Phylum Gastrotricha
macrodasyida and Chaetonotida
what do nematodes have but tapeworms and acanthocephalans lack?
an alimentary canal
Acanthocephalan--- what kind of worm?
spiny head
phylum has----cuticale, comeplete alimentary canal, 3 germinal layers, no gastrovascular, only longitudinal muscles.
nematoda
2 classes of nematoda
phasmidae
aphasmidae
sensory pits located on each side near the posterior extremity of nematodes
phasmids
sensory organs loacted on each side of the anterior end of nematodes
amphids
orders of Aphasmidae
Trichurata
orders of Phasmidae
Oxyurata

Camallanata
Rhabditata
Ascaridata
Strongylata
Sprirurata



Filariata
order---- eggs have polar plugs, bacillary bands
phylum?
Trichurata
Nematoda
order --- pharynx is club shaped, males have well developed copulatory bursa
phylum
Strongylata
nematoda
order---pinworms
phylum
oxyurata
nematoda
order---ornamented valves
phylum?
what kind of worm?
Camallanata
guinea worms
phylum--- nervous sytem is composed of an anterior nerve ring and a single midventral nerve cord.
Kinorhyncha (Echinoderida)
phylum---cucumber shaped
Priapulida
These species are essentially female and reproduce almost entirely by parthogenesis. Phylum?
Rotifera
the stage in the life cycle of Digenea which develops in the egg is the
cercaria