Parakeratotic Hyperkeratotic

Question 1

Definition

Answer 1

Excessive production of atypical and immature keratin
Affects malpighi epithelia
Skin and the mucous membranes (oral, esophageal, vaginal)
Ortokerarotic (without nuclei)
Parakeratotic (retained nuclei)

Question 2

Etiology

Answer 2

Primary: vitA and zn deficiency
Congenital form in cattles
In esophageal mucosa, occurs injury through reflux of gastric acid

Secondary: low free fatty acids, alterations of the intestinal flora, bacterias and virus

Question 3

Gross

Answer 3

Skin: thickened, rough
Epithelial mucosa: loses its smooth, shine and becomes dull and white
On mucous membrane appears a thin, yellowish and shiny membrane

Question 4

Micro

Answer 4

Incomplete keratinized cells
Cells with vacuolar degeneration

Question 5

Evo

Answer 5

Zinc suplementation, gastric ulcer, bacterial dermatitis