BMS171 Lab No: Revision

Flashcards about the parasites and arthropods.

Fasciola hepatica Egg

Size: 150 x 70 µm, Shape: Oval, Shell: Thin, Colour: Yellow, Content: Immature, Character: Operculated

Schistosoma mansoni Egg

Size: 150 x 60 µm, Shape: Oval, Shell: Thin, Colour: Yellow, Content: Mature (miracidium), Character: With lateral spine

Schistosoma haematobium Egg

Size: 140 x 60 µm, Shape: Oval, Shell: Thin, Colour: Yellow, Content: Mature (miracidium), Character: With terminal spine

Ascaris lumbricoides Egg

Size: 60 x 45 µm, Shape: Oval, Shell: Thick, Colour: Yellowish-brown, Content: Immature (one cell), Character: Mammillated

Enterobius vermicularis Egg

Size: 50 x 25 µm, Shape: Planoconvex, Shell: Thick, Colour: translucent, Content: Mature (larva), Character: D-shaped

Diphyllobothrium latum Egg

Size: 70 x 50 µm, Shape: Oval, Shell: Thin, Colour: Yellow, Content: Immature, Character: Operculated

Taenia Egg (Cyclophyllidea egg)

Size: 40 x 30 µm, Shape: Spherical, Shell: Thick, Colour: Yellowish-brown, Content: Mature (Hexacanth), Character: Striated shell

Leptocercus cercaria

Cercaria with a simple tail

Lophocercus cercaria

Cercaria with tail surrounded by a membrane

Furcocercus cercaria

Cercaria with forked tail

Microcercus cercaria

Cercaria with tail as a knob-like structure

Amastigote form of Leishmania

2-5 x 1-2 µ, oval or spherical, No free flagellum

Promastigote form of Leishmania

10-20 x 1-3 µ, elongated, Nucleus is central, Kinetoplast anterior, Anterior free flagellum

Entamoeba histolytica cyst

Rounded with well developed cyst wall, 12-15 µ, contains 1-4 nuclei, glycogen and chromatoid bodies

Entamoeba histolytica trophozoite lumen form

Average 30 µm, irregular with pseudopodia, Commensal lumen forms feed on bacteria and food debris

Entamoeba histolytica trophozoite tissue form

Average 30 µm, irregular with pseudopodia, Tissue forms feed on RBCs

Female Anopheles Mosquito Mouth Parts

Pilose antennae (short hairs), Long maxillary palp

Female Culex Mosquito Mouth Parts

Pilose antennae (short hairs), Short maxillary palp

Male Anopheles Mosquito Mouth Parts

Plumose antennae (Long hairs), Maxillary palps long with clubbing ends

Male Culex Mosquito Mouth Parts

Plumose antennae (Long hairs), Maxillary palps long with no clubbing ends

Sandfly (Phlebotomus)

Small delicate insects measuring 2-3 mm in length, hairy with long legs and antennae, humpy thorax, and sandy color