Giardia Infection Process
35 Questions
2 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which type of host harbors the adult parasite where it replicates sexually?

  • Reservoir host
  • Definitive host (correct)
  • Paratenic host
  • Intermediate host

What is the term used to describe an association where one partner benefits without causing detectable harm to the other?

  • Symbiosis
  • Parasitism
  • Mutualism
  • Commensalism (correct)

Which term describes a disease that can be transmitted from animals to humans?

  • Enzootic
  • Paratenic
  • Zoonosis (correct)
  • Vectorborne

In the classification of protozoa, which phylum contains Ciliates?

<p>Ciliophora (C)</p> Signup and view all the answers

What is the only amoeboid organism mentioned in the text that is of medical importance?

<p>Entamoeba histolytica (C)</p> Signup and view all the answers

Which category of parasites includes helminths?

<p>Macroparasites (D)</p> Signup and view all the answers

What term is used to describe parasites that live within the body of the host?

<p>Endoparasites (D)</p> Signup and view all the answers

Which type of parasite multiplies within its vertebrate host, often inside cells?

<p>Microparasite (D)</p> Signup and view all the answers

What is the term used to describe parasites that live on the surface of the body?

<p>Ectoparasites (B)</p> Signup and view all the answers

Which infectious agents are generally excluded when using the term 'parasite'?

<p>Viruses, bacteria, and fungi (A)</p> Signup and view all the answers

Which organelle in trophozoites plays a key role in the destruction and necrosis of tissue in the host?

<p>Granular cytoplasm (D)</p> Signup and view all the answers

What is the most effective antinaeglerial agent for PAM, as mentioned in the text?

<p>Amphotericin B (B)</p> Signup and view all the answers

What is the primary mode of transmission for E.histolytica when cysts are ingested by a human host?

<p>Consumption of contaminated food or water (A)</p> Signup and view all the answers

How are N. fowleri amoebae usually cultivated in the laboratory?

<p>On moist agar spread with E. coli or Enterobacter aerogenes (A)</p> Signup and view all the answers

Which specific anatomical site is invaded by metacystic trophozoites resulting in ultimate lodging in the submucous tissue?

<p>Large intestine mucosa (C)</p> Signup and view all the answers

Which type of vector is described as being essential in the life cycle of the parasite?

<p>Biological vector (B)</p> Signup and view all the answers

What is the process where chromatin materials are concentrated into bars within the cytoplasm of cysts?

<p>Encystation (C)</p> Signup and view all the answers

What is the main way in which humans can acquire Giardia lamblia infection?

<p>By ingestion of faecally contaminated water or food (C)</p> Signup and view all the answers

What is the key factor that determines the pathogenicity of E.histolytica within a host?

<p>State of nutrition (A)</p> Signup and view all the answers

What characteristic differentiates trophozoites from cysts of Giardia lamblia?

<p>Multiple nuclei (C)</p> Signup and view all the answers

Which method is commonly used for diagnosing Entamoeba histolytica by microscopic identification in stool samples?

<p>Flotation or Sedimentation method (D)</p> Signup and view all the answers

What distinguishes Entamoeba dispar from E.histolytica based on their cysts?

<p>Eccentric endosome and 8 nuclei in mature cysts (D)</p> Signup and view all the answers

Which drug is recommended for asymptomatic infections of Entamoeba histolytica?

<p>Paromomycin (D)</p> Signup and view all the answers

How does Naegleria fowleri enter the human body to cause infection?

<p>Inhalation through the nose (B)</p> Signup and view all the answers

What is the likely outcome in a patient infected with Naegleria fowleri?

<p>Fatal primary amoebic meningoencephalitis within 72 hours (C)</p> Signup and view all the answers

What is the mechanism by which trophozoites attach to the mucosal surface of the duodenum and jejunum?

<p>Via the ventral disk (C)</p> Signup and view all the answers

What is the primary method of transmission for Trichomonas vaginalis?

<p>Vaginal intercourse (C)</p> Signup and view all the answers

Which diagnostic method involves swallowing a gelatin capsule with a nylon string to obtain upper intestine specimens for examination?

<p>Entero test (string test) (C)</p> Signup and view all the answers

Which parasite is responsible for inflammation and shortening of villi in the small intestine, leading to nutrient uptake blockage?

<p>Giardia lamblia (A)</p> Signup and view all the answers

Which antibiotic is known to treat giardiasis effectively in a single dose and causes less nausea compared to Metronidazole?

<p>Tinidazole (D)</p> Signup and view all the answers

What is the critical step in the pathogenesis of T.vaginalis?

<p>Adhesion to vaginal epithelial cells (A)</p> Signup and view all the answers

Which of the following plays a distinct role in the pathogenesis and evasion of host immunity by T.vaginalis?

<p>Adhesion proteins (C)</p> Signup and view all the answers

What can cause an increase in the incidence and risk of aggressive prostate cancers?

<p>Prolonged infection within the prostate (C)</p> Signup and view all the answers

In which body part can Pentatrichomonas hominis infect human beings?

<p>Intestinal tract (D)</p> Signup and view all the answers

What is the most traditional method for the diagnosis of trichomoniasis?

<p>Microscopic examination (B)</p> Signup and view all the answers

More Like This

Unleash your Protozoan Prowess
8 questions
Giardia Lambia Symptoms Quiz
12 questions

Giardia Lambia Symptoms Quiz

PrivilegedCoralReef avatar
PrivilegedCoralReef
Giardia and Infection Mechanisms
24 questions
Use Quizgecko on...
Browser
Browser