Skin Fungus Part 1

How do fungi survive?

decomposing and utilizing organic matter (carbon-based)

What is the study of fungi?

mycology

What can fungi grow as?

yeasts, molds, dimorphic (yeast and mold forms)

What is shown?

hypha/hyphae (tubular filaments bounded by cell walls)

What is shown?

Mycelium (round arrangement of hyphae)

What are the sacs that fill with spores that are outgrowths?

sporangium/a

What are the reproductive and infectious bodies that spread the fungus?

Spores/sporidium

How do single fungal cells divide (yeast)?

budding or binary fission

Is budding equal or unequal splitting?

unequal splitting

Is binary fission equal or unequal splitting?

equal

How is yeast classified?

byits method of reproduction or dividing

How do we classify mold?

by hyphae shape

What is morphology when classifying molds?

parallel or nonparallel walls

What do we look at when classifying molds hyphal?

morphology, septation/divisions, branching, pigmentation

How are molds further classified?

by their spore and its shape

What are fungal environmental requirements?

moisture, warmth, available food source (potassium, phosphorus, magnesium, sulfur, amino acids, vitamins, and fatty acids)

What is the yeast infection, typically in the ears, has an odor, and waxy discharge?

malassezia pachydermatis

How can we remember malassezia pachydermatis?

pachderm= elephant

What yeast infection is shown?

malassezia pachydermatis

Besides ears, what else can malassezia pachydermatis effect?

skin folds

What is the yeast infection that is painful and in the oral cavity/throat?

candida albicans (thrush)

What yeast infection is shown?

candida albicans (thrush)

What are dermatophytes?

skin fungi

What does ringworm require for growth? Therefore, where do they grow?

keratin- skin, hair, nails

What genus do ringworm fungi come from?

microsporum, trichophyton, epidermophyton

What is shown?

dermatophytes or ringworm

What is the growth pattern of ringworm?

expanding outward in a ring pattern as it uses keratin

T/F: The center of ringworm can never heal or regrow hair.

False- it can be treated

What occurs in chronic infection, when hairless skin becomes thickened and rough?

lichenification

What is the order for ergot drom claviceps purpurea?

animal ingests contaminated grain, mycotoxins spread, vasocontriction, skin necrosis → coagulation necrosis

What does ergot cause?

death of tissue or possibly hooves (degloving)