Biology Questions and Answers
- How do ascaris obtain
food?
The ascaris live within the human gut
and feed from the food ingested by theinfected person.
- Does Ascaris lumbricoides
present an intermediate host?
Ascarislife cycle is is a m dependent only on one hostonoxenous parasite, its (^)
and so it does not have intermehost. diate
- What is the life cycle of
ascaris?
Adult ascarisintestine can r that live within elease up to 200the human
thousand eliminated eggs a day. The eggs arewith human feces and
mature in the environment under some
heat and moisturmay ingest mature conditions.e eggs through food Humans
contaminated by human feces or
through bad hygienic haagain inside the human intestine rbits. The eggselease (^)
larvae that cross the enteric mucosa
and gain the circulation rlungs. In the lungs the larva mature eaching the (^) and
go to the airway awhen they are then swallowed. nd to the pharynxWithin (^)
the gut the larvae develop into adult
worms.
- What are the main
symptoms of the pulmonary
and of the intestinal phases of
the ascaris infestation?
In the pulmonary pinfestation causes cohase the ascarisugh, hemoptysis, (^)
dyspnea, fever, fatigue and may causa special kind of pneumonia called e
eosinophilic pneumonia. In the intestinal
phase the symspoliation of nutrients of the host andptoms are due to (^)
thus hunger and weight loss may
appear. Masses obowels can cause sevf ascarisere intestinal inside the
obstruction.
- What are some
prophylactic measures against
ascariasis?
The main pascariasis are: efficient washinrophylactic measures againstg of
vegetables ansanitary conditionsd other foods; basic and appropriate (^)
destination ofor people; combat agaif feces; hygiene educationnst insects that (^)
can carry the eggs of the parasite, like
flies and cockroaches.
- What is ancylostomiasis?
AncylostomiasisAncylostoma du is a disease causeodenale or Necatord by
americanus, both hookworms belonging
to the nematode phylum (roAncylostomiasis caused by these wormsundworms).
is also called hookworm disease.
Since the parasites nourish themselves
on human blood the infection causes
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