During digestion what is a function of the mouth

Evaluate the following life cycle.    Human ingests oocysts from cat feces or cyst containing bradyzoites from raw or undercooked meat à sporozoite is released and penetrates the intestinal cell à tachyzoite forms à asexual reproduction occurs in cells à cells rupture and tachyzoite spreads via blood stream invading other tissue cells   This depicts the life cycle of which organism?   What patient populations (2) are at significant risk for infection from this organism?

Cysts of Giardia lamblia:

If the worm is broken during an attempt to remove it, the patient may experience a severe inflammatory reaction, therefore surgery is used as a means of removal.  However, in some areas of the world, removal is accomplished by using the ancient practice of rolling the worm a few inches at a time onto a stick.  What parasite does this describe?

Which sporozoa may result in encephalitis, nephritis or keratoconjunctivitis in AIDS patients who are infected?

The examination of human feces is of no help in the detection of:

What organism causes granulomatous amebic encephalitis in patients that are usually immunocompromised or eye infections in people practicing poor contact lens care?

A blood parasite that invades reticulocytes, is characterized by single ring forms and Schuffner’s dots and may cause significant, long term relapse is:

Eating poorly cooked pork can lead to infection with:

A 48-year old man was admitted to the hospital after complaining of fever and shortness of breath.  Radiographs revealed an enlarged heart and complete blood count smear results revealed rare C-shaped trypomastigote forms.  The patient was on active military duty years ago in the Panama Canal Zone.  The most likely parasite is: