Protozoa

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107 Terms

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encystation

The process by which a trophozoite differentiate into a cyst

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exystation

process by which cysts differentiate unto trophozoite forms

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infective stage

refers to the stage of the parasite that enters the host pr the stage that is present in the parasite's source of infection

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pathogenic stage

refers to the stage of the parasite that is responsible for producing the organ damage in the host leading to the clinical manifestations

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kingdom protozoa

consists of single-celled eukaryotic organisms that are spherical to oval or elongated in shape

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binary fission

protozoa divides by the means of?

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merogony or schizogony

Asexual reproduction is achieved through a process called

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asexual and sexual means

sporozoans is produced through

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trophozoite

most of the parasitic protozoa infections are diagnosed by demonstrating the motile, feeding, dividing stage of the parasite is called

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cyst

the dormant, non motile form is called

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false feet

trophozoites contains pseudopods is called as

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Entamoeba histolytica

it is an intestinal and tissue amoeba and the only known pathogenic intestinal amoeba that is common in tropical countries

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trophozoite

it is found within the intestinal and extra intestinal lesions, and in diarrheal stool

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cysts

are usually found in non diarrheal, formed stools

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flask shaped ulcers

the trophozoites of e.histolytica secrete enzymes that can cause local necrosis producing the typical with the parazites

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acute intestinal amoebiasis

presents as bloody, mucus-containing diarrhea (dysentery) accompanied by lower abdominal discomfort, flatulence (release of gas), and tenesmus (feeling of incomplete defecation).

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amoeboma

A lesion that may form in the cecum or in the rectosigmoid area of the colon, which may be mistaken for a malignant tumor

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Extraintestinal amoebiasis

occurs when the parasites enters the circulatory system

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amoebic liver abscess

it is the most common extraintestinal form of amoebiasis

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giardia lambia

a subphylum mastigophora, also known as the girdia intestinalis

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giardia lamblia

it is an intestinal protozoan that was initially known as cercomonas intestinalis

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giardia duodenale

Another name used for Giardia lamblia.

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old man faces

the trophozoite of giardia lamblia is described as remembling an?

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giardiasis

also known as the travelers disease, an infection characterized by non bloody, foul-smelling diarrhea accompanied by nausea, loss of appetite, flatulence, and abdominal cramps

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trichomonas vaginalis

part of subphylum mastigophora, a parasite that is pear shaped organism with central nucleus, four anterior flagella, and an undulating membrane

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acanthamoeba

also known as the free living amoeba

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acanthamoeba castellani

together with the naegleria, is a minor protozoan pathogen, but unlike naegleria, it usually causes inflammation of the brain substances and its meningeal coverings

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acanthamoeba cestellani

a free living bacteria that can cause inflammation of the brain substance and its meningeal coverings

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granulomatous amoebic encephalitis

infection occurs primarily in immunocompromised individuals which is manifested by headache, seizures, stiff neck, nausea, and vomiting

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keratitis

infection of the cornea of the eye

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naegleria

it is also classified as a free living protozoan which has the ability to survive in thermal spring water

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slug like

trophozoite's of the naegleria is described as _ with pear shaped flagellate with two flagella responsible for the jerky movement

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naegleria

it is often acquired transnasally when swimming in contaminated water

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primary amoebic meningoencephalitis

this is caused by the amoeboid trophozoites, leading to rapid tissue tissue destruction manifested by sudden onset of sore throat, nausea, vomiting, fever, and headache

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Leishmaniasis vector

sandfly

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leishmaniasis spp

it is an obligate intracellular parasite

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promastigote

it is the infective stage in leishmaniasis which may be seen only if a blood sample is collected and examined immediately after transmission

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epimastigotes

are found primarily in the vector in leishmaniasis

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amastigote

it is the pathogenic and diagnostic stage of leishmaniasis which is primarily found in tissue, muscle, as well as the central nervous system within macrophages and in cells of the reticuloendothelial

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blepharoblast

it is the typical amastigote thqt is round and oval in shape and contains a nucleus, a basal body structure

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kinetophlast

both the blepharoblast and parabasal body is collectively known as

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leishmaniasis diovani

visceral leishmaniasis

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leishmaniasis tropica

cutaneous leishmaniasis

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leishmaniasis braziliensis

mucocutaneous leishmaniasis

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leishmania donovani complex

it is the causative agent of visceral leishmaniasis

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kala azar or dumdum fever

another term for visceral leishmaniasis

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kala azar

means black sickness or black fever

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leishmaniasis donovani chagassi

mainly seen in central america and is transmitted by the lutzomyia sandfly

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leishmaniasis dovonavi donovani

found in the parts of africa and asia and is transmitted by the phlebotomus sandfly

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leishmaniasis infantum

also transmitted by the phlebotomus sandfly that is found mainly in mediterranean europe

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montonegro skin test

laboratory diagnosis for visceral leishmaniasis

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strawberry cervix

Trichomonas vaginalis' manifestation when a women is infected wherein the cervix appears very red with small punctuate hemorrhage

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conjunctivitis

infected infants may manifest _ when the mother passes trichomonas vaginalis through birth canal

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prostatis

(inflammation of the prostate gland) when a man is infected with trichomoniasis, he might develop the symptoms of?

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balantidium coli

it is a morphologically more complex than E. histolytica that consist of the primitive mouth called as the cystostome, nucleus, food vacuoles, and a pair of contractile vacuoles

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balantidium coli

it is the largest protozoan (phylum ciliophora) to infect the humans

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pig and monkeys

the most common reservoir for balantidium coli

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leishmania braziliensis complex

it is the causative agent of mucocutaneous leishmaniasis which involves the skin cartilage, and mucous membranes which occurs mostly in brazil and central america

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leishmaniasis panamensis

panama and colombia

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leishmaniasis peruviana

peruvian andes

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leishmaniasis guyanensis

the guianas

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sandflies (luztomyia and psychodopigus)

infection of leishmaniasis braziliensis complex is transmitted through skin bite by?

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mucocutaneous leishmaniasis

it is also called as espundia which begins with a papule at the site of insect bite, then forms metastatic lesions, usually at the mucocutaneous junction of the nose and mouth

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tapir nose

a manifestation of symptom in mucocutaneous leishmaniasis wherein ulcerating lesions destroy the nose and mouth

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ulcer biopsy

laboratory diagnosis for diagnosing mucocutaneous leishmaniasis

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leishmania tropica complex

it consist of l. tropica, l. aethiopica, and l. major

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leishmaniasis tropica complex

the causative agent of what is referred to as old world cutaneous leishmaniasis

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phlebotomus

all of the complex in leishmaniasis tropica are transmitted by?

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old world cutaneous leishmaniasis

it is also known as the oriental sore, baghdad, or deli boil

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old world cutaneous leishmaniasis

it is characterized by one or several pus containing ulcers that may heal spontaneously with small pruritic red papule at the bite site

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trypanosomes

they are also hemoflagellates like the leishmania

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trypomastigotes in trypanosoma

are curved, assuming the shape of the letters C, S, ans U which are visible in peripheral blood

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triatoma or cone nose

it is also known as the kissing bug

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trypanosoma cruzi

it is often transferred to human host when the feces of the bug is containing trypomastigotes

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trypanosoma cruzi

primarily found in south and central america that is transmitted by reduviid bug or triatomine bug

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american trypanosomiasis

also known as the chagas disease

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Chagoma (Romana's sign)

this is the acute phase of the chagas disease which are manifested by a nodule in the bite site with unilateral swelling of the eyelid

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trypanosoma brucei gambiense and rhodesiense

their life cycle involves the tsetse fly as the vector

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humans

these are the reservoir for trypanosomas brucei gambiense

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domestic and wild animals

reservoirs of trypanosoma brucei rhodesiense

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west african or gambian sleeping

t. gambiense infection is also known as the_ which is chronic

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east african or rhodesian sleeping

t, rhodesiense is also known as the which is more rapidly fatal

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trypanosoma gambiense

causes disease along the water courses in west africa

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trypanosomas rhodesiense

causes disease mostly in arid regions of east africa

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chancre

a lesion in african sleeping sickness which is an indurated ulcer known as

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Winterbottom's sign

it is also known as the enlargement of the posterior cervical lymph nodes

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kerandell's sign

it is manifested by pruritis, localized edema, and delayed pain sensation

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malaria

it is caused by plasmodium vivax, plasmodiu, malariae, plasmodium knowlesi, and plasmodium falciparum

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female ampheles

it is the vector and definitive host in plasmodium

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sporogony

also known as the sexual cycle which occurs primarily in mosquitoes

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schizogony

also known as the asexual cycle which occurs in humans

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Exoerythrocytic phase

infective stage is the sporozoite from the saliva of the bitting mosquito, which is taken up by the liver cells

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hypnozoite

plasmodium vivax and plasmodium ovale produce a latent form called as the ————— also known as the sleeping form

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plasmodium knowlesi

a natural parasite of macaque monkeys

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rigors

also known as chills

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myalgia

also known as muscle pain

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athralgia

also known as the joint pain

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tertian malaria

it is a type of malaria that is caused by p vivax, p ovale, and p falciparum

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plasmodium falciparum

causes malignant tertian malaria since it causes severe infection which is potentially life threatening due to extensive brain (cerebral malaria) and kidney damage

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black water fever

it is a form of type III hypersensitivity in response to parasite