Fungi (subcategory) Flashcards
Grow as _ (yeast) or as multicellular _ (molds)
single cells ; filamentous colonies
Most are not pathogenic, rather _ - obtain food from dead organic matter
saprophytic
Fungi are identified by _ or _ to examine their characteristic structure
direct examination ; cultured
We use _ to make the diagnosis of what type of mold the sample is
hyphae
A mat of overlapping hyphae are called _
mycelia
_ fungi are capable of growing in both forms (yeast&mold)
dimorphic
_ grows in the outside environment and _ grows inside a host
mold ; yeast
Yeast reproduce via _
budding
Molds and dimorphic fungi reproduce from _ as a mechanism for reproduction and transmission
asexual spores
Fungal cell walls composed of _ vs _ found in bacterial cell walls
chitin ; peptidoglycan
T/F: antimicrobial drugs will have similar effects on fungi because their cell walls are made up of similar proteins
False
Fungal cell membrane contains _ vs _ found in mammalian cell membranes
ergosterol ; cholesterol
What is the term for chronic fungal infections?
Mycoses
_ infections are of the outermost layer of the skin, nails and hair; treated topically
superficial
_ infections such as ringworm and tinea, affect the keratinized layers of the skin, hair and nails; caused by dermatophytes, host immune response may be stimulated
cutaneous
What type of treatment is required for someone with a cutaneous infection?
oral antifungal medication
Which type of mycoses are mainly seen in 3rd world countries, involve the dermis, subcutaneous tissues, muscle and fascia; most infections are chronic, expressed clinically as lesions on the skin surface, initiated by trauma to the skin?
subcutaneous
How are subcutaneous infections treated?
Difficult to treat, surgical excision or amputation often required
_ infection (primary infection) originate primarily in the lungs, travel to distal sites; fungi found in soil and feces of birds and bats - geographically defined, associated with inhaled spores
systemic
How are systemic infections treated in Canada?
aggressively treated with IV antifungal therapy
_ infections observed in people with impaired host defenses
opportunistic
A person presents in the ER with a suspected fungal infection, this person has AIDs, what type of infection do you think they have?
opportunistic because of the impaired immune system
