11, 11.1, 11.2 - Mycology Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

fungal disease are called

A

mycoses

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

dimorphic fungi

A

can exist as moulds or yeast

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

hyphae

A

characteristic structure of moulds

elongated filaments which may branch

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

mycelium

A

network of hyphae

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

yeast form

A

unicellular

spherical or egg shaped

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Candida albicans causes

A

colonises mucous membranes
causes opportunistic, mucocutaneous disease
can result in more significant mucocutaneous disease or deep seated, systemic disease with high mortality

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

superficial mycoses

A

pityriasis versicolor
white piedra
black piedra

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

cutaneous mycoses

A

dermatophytosis (ringworm, tinea)

mucocutaneous candidiasis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

pityriasis versicolor

A

no living tissue invaded

no inflammation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

tinea

A

no living tissue invaded

inflammatory response in living epidermis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

candiasis

A

invasion of living part of epidermis or mucosa, with inflammation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

pityriasis versicolor caused by

A

malassezia furfur

asymptomatic cosmetic appearance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

piedra

A

superficial infection of hair shafts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

dermatophytosis

A
tinea or ringworm 
cutaneous mycosis 
caused by dermatophytes 
- trichophyton 
- Microsporum 
- Epidermophyton floccosum
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

dermatophytosis may affect

A

skin or nails

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

tinea circinata

A

classic appearance of dermatophytosis

dry scaly skin in the centre and raised, inflamed spreading margin

17
Q

when dermatophytosis affects the nails it is called

A

tinea unguium

a form of onchomycosis

18
Q

onchomycosis

A

fungal nail infection

19
Q

candidiasis caused by

A

candida

20
Q

candida species exist mainly in form

A

yeast

21
Q

candida reproduce by

A

budding

22
Q

most common candida

A

Candida albicans

23
Q

11 pathogenic candidas

A
albicans 
glabrata 
auris
dublinensis
guilliermondii
pseudotropicalis 
krusei 
lusitaneae 
parapsilosis 
rugosa 
tropicalis
24
Q

candida usually causes infection in those with

A
compromised immunity 
such as 
- antibiotic use 
- changes in hormones
- general debility
- diabetes
- immunosuppressive drugs 
- AIDS
25
Q

mucocutaneous candiasis occurs in areas of the body such as

A

nappy area
valva and mucous membrane of the vagina
sweaty, intertriginous areas of the skin, eg. beneath breasts
moist areas

26
Q

candidiasis on mucous membranes produces

A

discharge which is milky white, thick with curd like chunks, inflamed, swollen mucosa, painful and itchy

27
Q

features of subcutaneous mycoses causing fungi

A

often soil fungi

introduced to the skin my trauma

28
Q

subcutaneous infections are typically

A

chronic and rarely become systemic

29
Q

types of subcutaneous mycoses

A
  • mycetoma
  • sporotrichosis
  • chromoblastomycosis
  • pheohyphomycosis
30
Q

fungal mycetomas are called

A

mycotic mycetomas, eumycetomas, eumycotic mycetomas or maduromycosis

31
Q

bacterial mycetoma are called

A

actinomycotic mycetomas

32
Q

clinical triad for fungal mycetoma

A
  1. tumefaction - tumour like swelling
  2. draining sinuses - pus or serosanguinous fluid
  3. granules - small collections of mycelial in concrete matrix
33
Q

most common fungal cause of mycetoma

A

madurella genus

34
Q

sporotrichosis found in

A

unfrequently found in Australia

often misdiagnosed as staph infection

35
Q

sporotrichosis symptoms

A
  1. small papule on the periphery at the site of foreign body trauma
  2. gradual development of an enlarging, non-healing ulcer
  3. appearance of pus filled red swellings moving up the limb (following lymphatic vessels)
  4. these swellings may discharge pus
  5. the infection progresses over a number of months if untreated, and gradually heals
36
Q

sporotrichosis is caused by

A

sporothrix schenckii

OR
some other fungi, bacteria including nocardia, and mycobacterium marinum

37
Q

chromoblastomycosis clinical features

A

scaly nodule at the site of inoculation
scaly whitish plaque thats reaps slowly
becomes raised and warty over time
may develop into cauliflower like region

38
Q

pheohyphomycosis

A

typical in the normal. host in the cystic form

in the immunocompromised, infection may involve the paranasal sinuses or the brain