Flagella Lecture Flashcards

1
Q

supphylum where the flagellates are classified

A

SUBPHYLUM MASTIGOPHORA

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2
Q

Locomotory organelles

A

flagella

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3
Q

Axoneme

A

root of flagellum

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4
Q

Undulating membrane

A

Flagellum finlike structure that generates a wavelike motion

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5
Q

Serves as oral cavity

A

cytosome

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6
Q

Constitute the neuromotor apparatus (blepharoplast and parabasal body)

A

With kinetoplast

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7
Q

LIFE CYCLE OF G. LAMBLIA

A
  • Portal of Entry – Mouth
  • Mode of Transmission – Ingestion of infective cyst
    Habitat – Intestine
  • Portal of Exit – Anus
  • *** with mechanical irritation
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8
Q

causative agent of G. Lamblia

A

Traveller’s diarrhea

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9
Q

Control and prevention of G. Lamblia

A
  • Treatment of cases (Metronidazole)
  • Proper or sanitary waste disposal to prevent contamination of water supply and food
  • Avoid the use of night soil as fertilizer
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10
Q

Dientamoeba fragilis life cycle

A

Portal of Entry – Mouth
Mode of Transmission – Ingestion of trophozoites Habitat – Intestine
Portal of Exit – Anus
***may be transmitted via eggs of Ascaris and Enterobius

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11
Q

pathogenicity of T. hominis & T. Tenax

A

commensal

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12
Q

pathogenicity of T. Vaginalis

A

may cause UTI

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13
Q

G. lamblia pathology

A
  • Non-tissue invading but pathologic
  • Causative agent of Traveller’s diarrhea
  • Upon ingestion of the cysts it takes 1-4 weeks for disease to manifest (9 days)
  • Maybe asymptomatic (cyst passer)
  • Mechanical irritation of the sucking disc to the microvilli → deficiencies in the digestive enzymes → malabsorption (steatorrheic)
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14
Q

ACUTE CASES g. lamblia

A
  • abdominal pain, cramping with diarrhea
  • There is a note of flatus with an odor of H2S- smelling like “rotten eggs”
  • Bloating, nausea and anorexia followed by malaise and flatulence
  • Untreated
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15
Q

Chronic cases of g. lamblia

A
  • Steatorrhea or the passage greasy, frothy stool that float on toilet water
  • weight loss
  • profound malaise
  • fever
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16
Q

Control and prevention of g. lamblia

A
  • Treatment of cases (Metronidazole)
  • Proper or sanitary waste disposal to prevent contamination of water supply and food
  • Avoid the use of night soil as fertilizer
17
Q

Life cycle of G. lamblia

A

− Ingestion of Dormant Cysts
− Excystation trophozoite emerge to an active state
− Trophozoite undergo asexual replication
− Not everyone exhibit symptoms
− Encystation during transit toward the colon
− Cysts and trophozoites expelled in the feces
− Only cysts can survive outside of the host
− Cyst can survive for weeks to months in cold water