Q2 INTEGUMENT

Question 1

layer of the epidermis (deep to superficial)

Answer 1

stratum basale, spinosum, granulosum, lucidum, corneum

Question 2

Follicular ostia

Answer 2

Skin pore

Question 3

What type of gland are sebaceous

Answer 3

Holocrine

Question 4

What type of gland are sweat glands

Answer 4

Apocrine or eccrine based on hair vs non-hair

Question 5

Orthokeratosis

Answer 5

Nuclei absent

Question 6

Parakeratosis

Answer 6

Nuclei present

Question 7

Spongiosis

Answer 7

Intracellular edema

Question 8

Acantholysis

Answer 8

Disruption of desmosomes between keratinocytes (usually immune mediated)

Question 9

Granulation tissue

Answer 9

Capillaries and fibroblasts perpendicularly orientated

Question 10

Furunculosis

Answer 10

Rupture of the hair follicle

Question 11

Hidradentitis

Answer 11

Apocrine gland inflammation

Question 12

Photosensitization types

Answer 12

1: primary ingestion of photodynamic substance
2: inherited enzyme deficiency
3: hepatogenous disease causes phylloerythin to accumulate in the blood

Question 13

Pithomycotoxicosis

Answer 13

Ovine facial eczema caused by build up of mycotoxins

Question 14

Dry gangrene (fescue foot)

Answer 14

Ergotamine and ergovaline causes vasoconstriction and ischemic necrosis of the hind legs

Question 15

Acral lick dermatitis

Answer 15

Psychogenic hyperplastic dermatitis on the extremities

Question 16

Acral lick dermatitis

Answer 16

Psychogenic hyperplastic dermatitis on canine extremities

Question 17

Intertrigo

Answer 17

Skin fold dermatitis with retained moisture creates a great environment for bacteria

Question 18

Poxviridae

Answer 18

Mechanical vectors, eosinophilic inclusion bodies
Ex. Swine pox, orf, lumpy skin disease

Question 19

Papillomaviridae

Answer 19

Benign epithelial proliferation then enters stratum basale

Question 20

Superficial pyoderma

Answer 20

Heals without scarring, no lymph node involvement, epidermis, epidermal collarettes (impetigo, greasy pig disease)

Question 21

Deep pyoderma

Answer 21

Hair follicle, dermis, and hypodermis affected, draining tracts and regional lymphadenitis/ furunculosis

Question 22

Which bacteria produce septic embolism and vasculitis near the skin?

Answer 22

E. rhusiopathiae, salmonella, and E. coli, all produce toxins

Question 23

which viral diseases mimic bacterial toxins?

Answer 23

porcine dermatitis and nephropathy syndrome (PDNS), african swin fever, and classical swine fever

Question 24

dermatophytosis

Answer 24

ringworm!! could be trichophyton or microsporum, furunculosis, intracorneal microabscesses

Question 25

pythiosis

Answer 25

swamp cancer, limbs of animals/ water mould

Question 26

sporotrichosis

Answer 26

dermatitis and lymphangitis (zoonotic)

Question 27

demodicosis

Answer 27

in hair follicle (mange if immune compromised)

Question 28

scabies/ notoedric mange

Answer 28

ears, head, neck, zoonotic

Question 29

psoroptic mange

Answer 29

sheep scabs, external ear canals and body

Question 30

chorioptic mange

Answer 30

back end of horse and ruminants

Question 31

equine cutaneous habronemiasis

Answer 31

summer sores, spread by flies

Question 32

onchocerca infection

Answer 32

ventral midline of horses

Question 33

urticaria

Answer 33

hives

Question 34

atopic dermatitis

Answer 34

IgE type 1, secondary infections with staph and malassezia

Question 35

insect bite hypersensitivity

Answer 35

immune type 1 and 4

Question 36

pemphigus foliaceus

Answer 36

type 2, targets desmoglein-1, intragranular pustules

Question 37

pemphigus vulgaris

Answer 37

type 2, targets desmoglein 1 and 3, suprabasilar vesicles, oral lesions

Question 38

bullous pemphigoid

Answer 38

targets hemidesmosomal proteins, very red lesions, mostly subbasilar clefts

Question 39

lupoid onychitis

Answer 39

type 3, claw sloughing then regrowth of misshapen claw, biopsy needs nailbed epithelium

Question 40

systemic lupus erythematosus

Answer 40

type 3, ab in skin BM and lymphohistiocytic dermatitis with subepidermal vesicles

Question 41

discoid lupus erythmatosus

Answer 41

photosensitive nasal dermatitis

Question 42

what can cause depigmentation in ruminants

Answer 42

copper deficiency

Question 43

pityriasis rosea

Answer 43

pigs 3-14 weeks old, resolves spontaneously, crusts groin

Question 44

puppy strangles

Answer 44

juvenile sterile granulomatous dermatitis and lymphadenitis of puppies under 4 months

Question 45

canine zinc responsive dermatosis

Answer 45

huskies, decreased intestinal absorption of Zn, scales and plaques, parakeratosis

Question 46

endocrine alopecia causes

Answer 46

hypothyroidism, hyperadrenocorticism, hyperestrogenism, hypersomatotropism, hyposomatotropism

Question 47

plasma cell pododermatitis

Answer 47

cats MT/MC pads swollen with white streaking