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Classification
Superficial mycoses
Definitions
Mycosis
Random
100

Classification of fungi based on morphological form 

Yeast

Yeast like

Filamentous fungi or Mould

Dimorphic fungi 

100

Causative agent of Tinea Versicular

Malassezia furfur 

100
This is the primary component in the cell wall of fungi.
What is chitin.
100
Unicellular organisms round to oval in shape. Microscopic morphologies are not particularly helpful to speciate. Colonies are bacteria-like. Most common type of infection caused by these organisms is thrush.
What is yeast.
100
The microscopic morphology of this mold is characterized by a small cluster of conidia at the tip of a delicate hyphae. It is often referred to as "daisy-like".
What is sporothrix schenckii
200

Classification based on Sporulation 

Phycomycetes

Ascomycetes

Basidiomycetes

Deuteromycetes



200

Causative agent of Tinea Nigra 

Exophiala werneckii

200
These structures extend below the fungal colony and absorb nutrients from the environment.
What is vegetative hyphae or mycelium.
200
Perhaps the most common fungal infections of humans. Includes athlete's foot and "ringworm". Organisms which cause this type of mycosis (Microsporum, Trichophyton, and Epidermophyton) are capable of invading the hair, skin and nails and are collectively known as Dermatophytes.
What is cutaneous mycosis.
200
This organism is identified by the presence of a capsule, caffeic acid and urease positive and does not able to produce hyphae.
What is Cryptococcus neoformans.
300

Major mycoses

Superficial 

Cutaneus

Subcutaneus

Deep or systemic 

Opportunistic mycoses

300

Causative agent of Piedra

black piedra Piedra hortae

white piedra Trihosporon beigelii

300
A sac-like reproductive structure filled with conidia.
What is a sporangium.
300
This type of mycosis may involve any of the internal organs of the body, including lymph nodes, bone, subcutaneous tissue and skin.
What is systemic mycosis.
300
Sporothrix schenckii, Histoplasma capsulatum, Coccidiodes immitis and Blastomyces dermatitidis all appear as molds at 25C and yeast at 37C. This characteristic is known as:
What is Dimorphism.
400

example of yeast like fungi

Candida albicans,Malassezia furfur 

400

Special filters and a fluorescent microscope is used to view specimens stained with this stain. Fungal elements appear white against a black background.

What is calcoflour white stain.

400
An elongated bud that has failed to separate. These have cell wall constrictions at septations.
What is a pseudohyphae.
400
Aspergillus, Candida albicans and Cryptococcus neoformans are collectively known as these types of pathogens. They commonly cause disease in individuals with compromised immune systems.
What is opportunistic pathogens.
400
Microbiologists can be exposed to molds on routine bacterial cultures through:
What is inhalation of conidia.
500

Examples of Superficial mycoses 

Tinea versicolor

Tinea nigra

Piedra

500

A vase-like reproductive structure often connected to strings of conidia.

What is a phialid.

500
In this type of mycosis the primary lesion begins as a small, non-healing ulcer. With time, the infection is characterized by the development of nodular lesions of the skin or deeper tissues at the point of contact and later involves the lymphatic channels and lymph nodes draining the region.
What is subcutaneous mycosis.
500

This type of media is used to evaluate the microscopic morphology of yeasts.

What is Cornmeal agar.