(11) Mycology I and II

Question 1

(some prop of fungi)

1. eu or pro?
2. contain nuclei?
3. how many chromosomes?
4. have mito? ER?
5. are more closely related to what?

Answer 1

Question 2

(some prop of fungi - cont)

1. possess what like plants?
2. oxygen use?
3. repro?
4. size vs bac?

Answer 2

Question 3

Fungi takes a little longer than bacteria to grow

dermatophytes = disease causing fugi

he actually talked a little while about this chart… so take heed

Question 4

(Morphology)

1. fungi grow as what or what?
2. molds - grow in the form of what?

molds = ?

3. yeast = ?

reproduce by what?

do they produce mycelia?

are some pathogenic?

what are pseudohyphae? result of what?

Answer 4

1. as single-celled yeasts or multicellular, filamentous colonies (molds, mushrooms)
2. in the form of multicellular filaments called hyphae

multicellular filamentous colonies

3. single celled budding organisms

budding (daugther smaller) or fission (daughter same size)

NO!

yes

elongated yeast cells that do not seprarte during growth; incomplete budding

Question 5

(Termingology)

1. hypha = ?
2. mycelium = ?

if above surface of growth - called what?

Answer 5

1. main growing form of a mold; branching, tubular structure 2 to 10 um in diameter
2. complex of hyphal strands, branches and associated spore-bearing structures

aerial mycelium

Question 6

Answer 6

Question 7

What are dimorphic fugi?

Answer 7

can exist as mold/hyphal/filamentous or as yeast

Question 8

1-3 three ways fungus cause disease?

Answer 8

1. tissue invastion - mycosis
2. toxin production - mycotoxins
3. induction of hypersensitivy - allergy

Question 9

1. three types of mycosis lesions?

Answer 9

Question 10

(Superficial Mycosis)

1. caused by what?

what are they?

Answer 10

1. dermatophytes

septate fungi that can cause infections of the skin, hair, and nails due to their ability to utlizie keratin

Question 11

Answer 11

Question 12

(Disease Caused by Dermatophytes)

1. disease - dermatophytosis –> ?
2. dermatophytes grouped under 3 genera - what are they?
3. ringworm describes the what often associated with disease?
4. ringworm is in what animals?
5. how transmitted?

Answer 12

1. ringworm

2. microsporum, trichophyton, epidermophyton
3. circular lesins
4. all species of domestic animals

Question 13

Question 14

(Path of Dermatophytes)

1. read pic
2. what is an ectothrix infection?

and endothrix infection?

Answer 14

2. on hair surface

invade hair shaft and internalize

Question 15

(dermatophytosis in dogs and cats)

Question 16

(Dermatophytosis in cattle)

1. caused by what?

Answer 16

1. trichophyton vuerrucosum

Question 17

(Dermatophytosis in Equines)

1. most common cause?
2. higher incidence in what climates?

Answer 17

1. trichophyton equinum

(less frequently T. mentagrophytes, t. vericosum, and microsporum equinum and M. gypseum

2. hot/humid

Question 18

(Dermatophytosis in Sheep)

1. caused by what?

Answer 18

1. T. verrucosum

he kind of skipped over this slide but here it is

Question 19

(Dermatophytosis in Pigs)

1. what is primary cause?

Answer 19

1. microsporum nanum

Question 20

(Dermatopytosis in Birds)

1. caused by what?

Answer 20

1. m. gallinae (he didn’t really say anuthing about this so don’t worry about it too much)

Question 21

Answer 21

Question 22

(Woods Lamp)

1. example - M. canis or M equinum - show yellowish green fluoresnce due to what secreted by fungi?

Answer 22

1. PTERIDINE

Question 23

(Zoonotic aspects)

1. transmission for horses to humans is more likely with what?
2. M. Canis has been reported to go to humans
3. bovine is
4. human deratophytosis is charactertized by what?

Answer 23

1. T. verrucosum
2. pruritic papulo-pustular dermatitis

Question 24

Question 25

(Subcutaneous Mycoses)

1. this form involves what?
2. these infections are chronic and can be initiated by what?

Answer 25

1. dermis, subcutaneous tissues, muscle, and fascia
2. piercing trauma to the skin (ex Cryptococcis)

Question 26

(Systemic Mycosis)

1-4. What are the four species?

5. what kind of fungi are these?

Answer 26

Question 27

(Systemic Mycosis)

(Blastomyces)

(Blastomyces Dermatitidis)

1. get most often how?
2. grows where in what form?

Answer 27

1. inhalation of spores/conidia
2. in lung in yeast form

Question 28

(Systemic Mycosis)

(Blastomyces)

(Blastomyces Dermatitidis)

1. what species susc?
2. enter airways and establish infection in what?
3. what are preferred sites in dog?
4. what lesions does it cause in lungs?

cx?

spread by hematogenous spread - what white hard things can become infected?

Answer 28

1. many (most often in dogs, humans, cats)
2. lungs and disseminate throuhgout body
3. look at the pic you wanker
4. granuloma formation

cough, shortness of breath

bones

Question 29

(Systemic Mycosis)

(Blastomyces)

(Blastomyces Dermatitidis)

(diagnosis)

1. how?
2. histology - see what?
3. treatment with what?
4. does it reoccur?
5. vx?

Answer 29

1. culture, lung aspirates, serology
2. budding yeasts in granulomas
3. antifungal agents…
4. frequently
5. nope

Question 30

(Systemic Mycosis)

(Histoplasma Capsulatam)

1. WW?
2. found where?
3. assoc with what?

Answer 30

1. WW
2. soil-inhaling spores form contaminated soil
3. bird and bat droppings

Question 31

(Systemic Mycosis)

(Histoplasma Capsulatam)

1. what are inhaled?
2. what grows in lungs?
3. what lesion in lungs?
4. disease is very similar to what?

Answer 31

1. conidia
2. yeast
3. granuloma
4. blastomycosis

Question 32

(Systemic Mycosis)

(Histoplasma Capsulatam)

1. Second most commonly reported fungal infection in what?

after what?

2. what age?
3. uncommon in what?

Answer 32

cats

cryptococcosis

2. all ages
3. horses

Question 33

(Systemic Mycosis)

(Histoplasma Capsulatam)

1. same as blasto
2. vx?
3. prevent exposure (chicken coops, bird and bat roosts)

Answer 33

2. no