Trematodes Ovum And Etc

Question 1

ovoidal in shape measuring from 70 - 100 micra in length by 50 - 65 mira in width, the eggshell is thin and frequently has a rough beaded outer surface due to cellular debris adherent to it

on the side near one end is a depression from which extends a small spinose process which is sometimes called the small lateral tubercle

embryonated when laid, has a ciliated miracidium with attenuated anterior end creating the sloping shoulder within the shell

Answer 1

S japonicum

Question 2

thin-walled saccular structure filled with germ cells

Answer 2

Sporocyst of japonicum

Question 3

elongate pear shaped body with rounded end and a long trail

tail is characteristically bifid

cuticle of the body and tail is covered with minute spines except at the region of the anterior sucker and tips of the tail

Answer 3

Cercaria of japonicum

Question 4

ovoidal in shape, measuring 155 by 60 miera, sometimes with S-like curve

yellowish brown, transparent shell with
a characteristic lateral spine

embryonated when laid with a ciliated miracidium

Answer 4

Mansoni

Question 5

elongate, ovoidal in shape, measures 112 - 170 micra by 50 micra

light yellowish brown, transparent shell and has a distinct terminal spine

partly mature when laid with miracidium

Answer 5

Haematobium

Question 6

in the tissues:
reaction in the tissues is similar to those of S. mansoni eggs
eggs appear to be spindle shaped with rounded anterior and conical posterior end
with a terminal spine

Answer 6

Haematobium

Question 7

large, operculated, ovoid in shape

140 - 150 micra by 65 - 90 micra for ______
160 - 190 micra by 70 - 90 micra for_____

light yellow in color when laid (bile stained)

transparent shell with thin double walls

contains large mass of lecithin granules when freshly voided (immature when laid)

Answer 7

F. hepatica

F. gigantica

Question 8

“thin-walled saccular structure filled with germ cells

Answer 8

Sporocyst of Fasciola spp

Question 9

free-swimming, ciliated, 130 by 27 micra in size

has a cephalic papillae, eye spots, two flame cells and a rudimentary digestive tract

Answer 9

Miracidium of Fasciola spp

Question 10

flask shape, yellowish brown and operculated

measures 35 to 20 micra

possess a terminal hooklike spine, resembling an electric bulb

operculum is smaller than the body of the shell, so that a characteristic shoulder is produced by the protruding shell like a lid of a teapot

fully embryonated when laid

Answer 10

Clonorchis ovum

Question 11

oval in shape with an operculum resting on “shoulders”

28 by 16 micra in size

may or may not possess terminal tubercle-like knob

fully embryonated when laid

Answer 11

Opisthorchis ovum

Question 12

yellowish brown ellipsoidal

measures 130 - 140 by 80 -85 micra

has a clear thick shell with a small operculum at one end

undeveloped when evacuated in the faces

Answer 12

Fasciolopsis buski ovum

Question 13

ovoidal in shape, straw colored, operculated

immature when passed out in the feces

measures 83 - 116 micra by 58 - 69 micra

Answer 13

Echinostoma ovum

Question 14

elongate structure which has anterior collar, rhabdicoele gut and a locomotor appendage

Answer 14

Echinostoma redia

Question 15

has a body and a simple tail

anterior end will resemble an adult worm with them same number of circumoral spines

reproductive organs are still immature

Answer 15

Echinostoma Cercaria

Question 16

minute, operculate, ovoidal, light brown in color

measures 28 to 30 micra by 15 - 17 micra

the shell has a slight shoulder at the rim of the operculum and sometimes a knob at the posterior end

fully embryonated when oviposited

Answer 16

Heterophyes eterophyes ovum

Question 17

minute, ovoidal, operculate with a slight “shoulder”

measures 26 - 28 by 15 - 17 micra

fully embryonated when laid

Answer 17

Metagonimus ovum

Question 18

oval in shape and golden brown

measures 80 by 55 micra

operculum is flattened, has thick shell

unembryonated when laid

Answer 18

Paragonimus ovum