filarial worms characteristics and classification

• Adult worms are?

  thread-like
• adult worms have?

  simple mouth
• circular or slightly elongated dorsoventrally

  and is surrounded by papillae

  adult filarial worms
• Adult worms live in the?

  subcutaneous tissues, connective tissues, muscle and body cavities
• Larvae are called

  microfilarila
• Female adult worms are

  viviparous
• key definitive host of adult filarial worms?

  humans
• Filarial worms are transmitted through the

  bite of arthropod
• Excretory cell

  small or large
• Genital cell

  small or large
• Wuchereria Bancrofti, Brugia malayi, Loa loa are?

  Sheated
• Onchocerca volvulus, Mansonella spp are?

  Unsheathed
• Nocturnal Periodicity

  during night
• Subperiodic

  day and night time
• Diurnal Periodicity

  during daytime
• The ingestion of microfilaria from the blood or tissues

  by a

  blood sucking insect
• infective stage which is the

  third stage, filariform
• The development of the microfilaria in the arthropod

  vector through?

  two distinct larval stages (1st and 2nd

  stages)
• The transfer of the infective larva to the skin of a new

  host by

  insect bite
• The development and maturation of the larva is at?

  selection site