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Parasitology > Fungi > Flashcards

Fungi Flashcards

1
Q

What is the study of fungi?

A

Mycology

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2
Q

What does myco mean?

A

fungi

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3
Q

What is the classification of fungi?

A

Kingdom Fungi

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4
Q

What is in the Kingdom Fungi?

A

Molds and yeasts.

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5
Q

What type of organism is yeast?

A

Unicellular fungi.

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6
Q

What type of organism is mold?

A

Multicellular fungi.

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7
Q

What do molds form?

A

Tubular filaments called hyphae.

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8
Q

What is a mycelium?

A

A tangles mass of hyphae.

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9
Q

What does mold look like?

A

Produces fuzzy looking colonies of growth.

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10
Q

Is mold aerobic or anerobic?

A

Mold is strictly aerobic.

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11
Q

Are molds Gram Pos. or Gram Neg.?

A

All of them are Gram Pos.

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12
Q

How do molds reproduce?

A
  • Fragmentation of cells.
  • Budding of cells (yeast).
  • Producing spores.
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13
Q

Are mold spores resistant?

A

They are highly resistant, but not as resistant as bacterial spores.

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14
Q

What shape are mold spores?

A

Round or oval microscopic structures.

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15
Q

Is mold zoonotic?

A

Yes, all molds are.

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16
Q

What are fungi?

A

Saprophytes, the live on and prefer dead things.

-pathogenicity is accidental.

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17
Q

In what 3 ways does fungi cause disease?

A
  1. Systemic or Subcutaneous infection
  2. Mycotoxicoses (poisoning by fungi)
  3. Cutaneous Infections
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18
Q

What happens with systemic infections of fungi?

A

It directly invades healthy tissue.

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19
Q

What is another name for systemic / subcutaneous infections of fungi?

A

Deep Mycoses

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20
Q

When is it rare to see Deep Mycoses?

A

Extremely rare to see with mold.

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21
Q

Are fungi normally present in animals?

A

Yes. They cause disease when the host is very weak.

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22
Q

What is mycotoxicoses?

A

Poisoning by fungi.

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23
Q

What do fungi produce?

A

Toxic substances that cause disease when ingested.

24
Q

What mainly causes mycotoxicoses?

A

Mainly caused by molds growing on feed stocks (stored grains).

25
Q

What does mycotoxicoses do?

A

Cause subclinical symptoms of poor growth, depression, salivation, kidney, liver problems, etc.

26
Q

What is another name for a cutaneous fungi infection?

A

Superficial Mycoses

27
Q

Is Superficial Mycoses contagious?

A

Very! Spread by contact.

28
Q

What fungi cause Superficial Mycoses?

A

Dermatophytes

29
Q

What do Superficial Mycoses live on?

A

Dead tissues.

-hair, nails, outer layer of skin.

30
Q

Does Superficial Mycoses cause an immune response?

A

It may not evoke an immune response from the host.

31
Q

What does Superficial Mycoses cause?

A

Irritation

-itching, etc.

32
Q

What are some common fungal infections?

A
  1. Yeast Infections

2. Dermatophytes

33
Q

What are yeast infections?

A

Deep Mycoses

34
Q

What is the disease caused by Cryptococcus neoformis?

A

Cryptococcosis

35
Q

Who does Cryptococcosis infect and where?

A

Subacute or chronic disease of dogs, cats, farm animals, people.

36
Q

What does Cryptococcosis cause?

A

Respiratory disease in dogs and cats.

37
Q

Is Cryptococcosis more common in dogs or cats?

A

It is more common in cats, yet more severe in dogs.

38
Q

What can Cryptococcosis cause in dogs?

A

CNS Diseases

39
Q

How is Cryptococcosis spread?

A

Inhalation of bird droppings, especially pigeons.

40
Q

Is Cryptococcosis susceptible to antibiotics?

A

No. Only to antimycotics.

41
Q

How are most molds treated?

A

With anitmycotics.

42
Q

Is Cryptococcosis zoonotic?

A

Yes.

43
Q

What does Cryptococcosis do in humans?

A
  • Mainly respiratory.

- May cause meningitis in immunocompromised patients.

44
Q

How do humans contract Cryptococcosis infections?

A

Usually by contact with bird feces.

45
Q

Do Dermatophytes penetrate the skin?

A

No. They only live on superficial dead skin.

46
Q

What are Dermatophytes normally called?

A

Ringworm

47
Q

What do Ringworm lesions look like?

A

They are typically circular.

48
Q

In what 2 ways is Ringworm diagnosed?

A
  1. Looking at skin scrapings under a microscope or culturing them.
  2. Using a Wood’s lamp
49
Q

What is a Wood’s lamp?

A

A fancy name for florescent light.

50
Q

What happens when you put skin scrapings under a Wood’s lamp?

A

40% of them will fluoresce green.

51
Q

What is the treatment for Ringworm?

A

Topical or internal antimycotics.

52
Q

What is Microsporum canis

A

Main cause of ringworm in dogs and cats.

53
Q

Where are ringworm lesions typically found?

A

Can be all over the body, mostly on head, ears, and eyes.

54
Q

What do ringworm lesions look like?

A

Circular areas of hair loss with scaling and crusting.

55
Q

Is ringworm zoonotic?

A

Yes, by direct contact.

Parasitology (14 decks)

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