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110 Cards in this Set

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Basic structural unit of fungi

Hypha

Fungi are also classified as

Thallophytes

Heterotropic members of the plant family that lack stems and roots

Fungi

Multicellular phase, cottony, mycelial mass

Mold phase

Unicellular phase, creamy, resembling bacterial colony

Yeast phase

Fungi that stays in mold phase at 25 & 37 degrees celcius

Monomorphic

Fungi in mold phase at 25 & 37 degrees celcius, and yeast phase in tissue

Diphasic

Fungi in mold phase at 25 degrees celcius and becomes yeast at 37 degrees celcius or when in tissue

Dimorphic

An intertwining structure composed of hyphae

Mycelium

Hyphae having no cross-walls or divisions

Aseptate hyphae

Also known as coenocytic hyphae

Hyphae having cross-walls or divisions

Septate hyphae

Vegetative portion of the mycelium

Thallus

Reproductive part of the mycelium containing the fruiting bodies

Aerial

Spores enclosed in ascus

Ascospores

Spores formed by the fusion of two identical cells from the same hypha

Zygospores

Spores formed by the fusion of two identical cells from different hyphae

Oospores

Spores enclosed in club-shaped basidium

Basidiospores

Spores arising from the side of hyphae

Conidia

Small, unicellular conidia

Microconidia

Large, multicellular conidia

Macroconidia

Conidia from simple budding

Bastoconidia

Thick-walled spores formed during unfavorable environmental conditions

Chlamydoconidia

3 types of chlamydoconidia

Terminal


Intercalary


Sessile

Formed from the fragmentation of mycelium; rectangular or barrel shaped

Arthroconidia

Mycosis in which there is no cellular response by the host

Superficial mycoses

Uneven pigmentation of the skin caused by M furfur

Ptyriasis or Tinea vesicolor

Morphology of M furfur

"Spaghetti and meatballs"

Brown-black cross outside hairshaft

Black piedra

Causes black piedra

Piedraia hostae

Light brown nodules on beard

White piedra

Causes white piedra

Trichosporon beigelii

Also known as dermatomycoses

Cutaneous mycoses

3 keratinized tissues

Skin


Hair


Nails

Caused by dermatophytes

Tinea or ringworm

Anthrophilic microsporum (infects man)

Microsporum audouinii

Colonizes skin and hair

Microsporum

Tinea capitis is seen in

Scalp

Tinea barbae is seen in

Beard

Tinea corpuris is seen in

Body

Tinea cruris is seen in

Groin

Infection of the groin caused by Tinea cruris

Jock's itch

Tinea ungmium is seen in

Nails

Tinea pedis is seen in

Feet

Manifestation of Tinea pedis

Athlete's foot

Dermatophyte having no microconidia

Epidermophyton

Dermatophyte which colonizes skin, hair and nails

Trichophyton

Indicator for Dermatophyte test medium (DTM)

Phenol red

Large spindle shaped rough macroconidia, curved terminal ends, and positive for rice medium

M canis

M canis produce what color fluorescence of ectothrix hairs

Green-yellow

M audouinii produce what color fluorescence of ectothrix hairs

Apple green

Pencil shaped macroconidia, tear shaped microconidia, urease negative, hair baiting negative

T rubrum

V-shaped penetration of hairshaft, spherical grape-like clusters-microconidia

T mentagrophytes

"Balloon" form

T tonsurans

"Rat tail" macroconidia

T verrucosum

Favus type of Tinea capitis, "favic chandeliers"

T schoenleinii

Swollen hyphae containing cytoplasmic granules

T violaceum

Dark, slow-growing fungi

Dematiaceous fungi

Also known as mixed sporulation

Fonsecaea

Conidia in side

Acrotheca

Conidia in chain

Cladosporium

Conidia in cluster

Phialophora

Granulomatous tumor of subcutaneous tissue

Mycetoma

2 fungus-like bacteria

Nocardia


Actinomyces

Most common cause of mycetoma

Pseudoallescheria boydii

Rare condition caused by dematiaceous saprobes

Phaeohyphomycosis

"Rose garden's disease" is also known as

Sporotrichosis

Causes sporotrichosis

Sporothrix schenckii

Appearance of S schenckii conidia in room temperature

"Flowerette" conidia

Concentric radiating eosinophilic material caused by antigen-antibody reaction

Asteroid bodies

Also known as Gilchrist's disease

North American Blastomycosis

Causative agent of North American Blastomycosis

Blastomyces dermatitidis

Appearance of B dermatitidis conidia in room temperature

"Lollipop" conidia

Exoantigen test for B dermatitidis

Specific A band

Causative agent of South American Blastomycosis

Paracoccidioides brasiliensis

Causative agent of Darling's disease

Histoplasma capsulatum

Tuberculate macroconidia, no microconidia, monomorphic fungi

Sepedonium

Exoantigen test for Histoplasma capsulatum

H and/or M bands

Also known as desert fever

San Joaquin Valley fever

Causative agent of san Joaquin Valley fever

Coccidioides immitis

Major biological hazard to lab personel

Coccidioides immitis

Appearance of Coccidioides immitis at 37 degrees celcius

Spherule filled with endospores

Causative agent of trush and vulvovaginitis, positive for germ tube formation

Candida albicans

Causative agent of torulosis or torulopsis, appear as encapsulated yeast cell in bird and bat droppings

Cryptococcus neoformans

Also known as nigrosine stain

India ink stain

Test for cryptococcal antigen in CSF

Latex agglutination test

Used to dissolve keratin

10% KOH mount

Color of positive hyphae in Periodic Acid Schiff (PAS)

Purplish-red

Gram stain modification used for fungi

Hucker modification

All fungi are gram

Positive

Culture for fungi with acidic pH as inhibitor for bacteria

Sabouraud dextrose agar (SDA)

Mycosel or Mycobiotic contains what 2 inhibitors

Chloramphenicol (for bacteria)


Cycloheximide (for saprophytic fungi)

Culture media used to differentiate T rubrum from T metagrophytes

Cornmeal agar

Culture media for aspergilus

Czapek's agar

Aspergilus causes

"Farmer's lungs"

C neoformans on Staib's medium produces what color of colonies

Brown-black colonies

Staib's medium is also known as

Birdseed or Nigerseed medium

Cottonseed medium is used for

B dermatitidis

Positive for rice medium

M canis

Incubation temperature of fungal cultures

25-30 degrees celcius (room temperature)


Optimum at 30 degrees celcius

Fungal cultures are held for how many days

30 days

Positive for L-DOPA ferric citrate test

Cryptococcus neoformans

QC for urease test

C neoformans (positive)


C albicans (negative)

2 organisms that produce red colonies on SDA

T rubrum


T mentagrophytes

QC for hair baiting test

T mentagrophytes


T rubrum

Serologic confirmation test for systemic fungi

Exoantigen test

Biosafety level of organisms not harmful to healthy individuals

Biosafety level 1

Biosafety level of common agents of infectious disease including HIV

Biosafety level 2

Organisms classified as Biosafety level 3

MTB


Systemic fungi


Organisms grown in large quantities


F tularensis


Brucella species

Viruses classified as Biosafety level 4

Arenavirus


Arbovirus


Filovirus (Ebola)


Smallpox

What year was smallpox eradicated from the world?

1979