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Mycology for MLS
Zygomycetes, Dermatophytes, Demitiaceous
| Question | Answer |
|---|---|
| This group is hyaline, septate, and monomorphic | Dermatophytes |
| Dermatophytes are incapable of penetrating______tissue | subcutaenous |
| The group invades hair, skin, and nails | trichophyton |
| This group invades hair and skin | microsporum |
| This group invades skin and nails | epidermophyton |
| This group invades skin | Malassezia furfur |
| Infections by dermatophytes are usually reffered to as? | Tinea |
| This is an infection of the hair follicle | Tinea capitis |
| This is an infection of the beard | Tinea Barbae |
| This is an infection of the body skine | Tinea corpis |
| This is an infection of the groin | Tinea cruris |
| This is an infection of the nails | Tinea unguium |
| This is an infection of the foot | Tinea pedis |
| All dermatophytes produce hyphae that are_________,_________ with __________ | branched, septate, arthrospores |
| Hair examination useds ___/____lamp | UV/Wood's |
| M. Auduinii and M.Canis will give what color under a UV lamp? | bright blue-green |
| T. Schenleinii will give what color under a uv lamp | dull green |
| KOH mount reveals conidia on the hair surface, and sometimes in sheaths. This is referred to as | Ectothrix |
| KOH prep reveals short hair stubs filld with spores. This is referred to as | Endothrix |
| KOH prep reveals hair invaded by hyphal elements. This is referred to as | Favic hairs |
| This fungi is thin-walled, pencil-shaped, macroconidia, terminal hyphae or short conidia with many thin walled smooth microconidia | trichophyton |
| This fungi has many large, thick-walled, macroconidia with 4 t0 15 septae. Few microconidia | microsporum |
| Only member of Epidermophyton with club shaped macroconidia and no microconidia | E. Floccosum |
| This trichophyton has few macroconidia and many microconidia | T. Mentagrophytes |
| T. Mentagrophytes typically causes | Tinea Pedis |
| This is the most common cause of tinea | Trichophtyon Rubrum |
| This trichophyton has chlymadyconidia | T. tonsurans |
| This trichophyton has long thin macroconidia and infects bearh, scalp, nails, and skin | T. Verrucosum |
| This is the most "yeast-like' trichophyton and cause of favic hairs | T. Schenleinii |
| This trichophyton has tangled and irregular hyphae with absent macro/microconidia | T. violaceum |
| This dermatophyte will not grow on rice agar. It has no conidia | Microsporum Audouinii |
| This microsporum invades scalp and skin | M. Canis |
| This microsporum as pointy ended macroconidia | M. Gypseum |
| The only dermatophyte in its category with no microconidia | Epidermophyton Floccosum |
| Etiologic agent of pityriasis versicolor | Malassezia Furfur |
| M. Furfur requires what to grow? | Long chain fatty acids. |
| Overaly medium with what when M. FurFur is suspected? | Olive oil |
| This dermatophyte looks like spaghetti and meatballs under the microscope | M. Furfur |
| This is chronic mycosis of the skin and subcutaneous tissue | chromoblastomycosis |
| These are infections of the subcutaneous tissue arising at the site of inoculation | Mycetoma |
| Bacterial mycetomata is called | actinomycotic |
| Fungal mycetomata is called | Eumycotic |
| How do you differentiate eumycotic from actinomycotic mycetomata? | direct examination |
| This subcutanoues infection is caused by pigmented fungi that have have malanin in cell wall | Phaeohyphomycosis |
| This demitiaceous fungi is saprophytic, phaeohyphomycotic, rapid growing | Alternaria |
| Dem: conidiophores are septate | Alternaira |
| Dem: conidiophores ares branched and bent | curvularia |
| Dem: allergic sinusities | Bipolaris |
Created by:
avarrius