University
Lesions on the elbows and knees that are well demarcated, thick, silvery, scaly, and
erythematous characterize which type of psoriasis?
a.
Plaque
b.
Inverse
c.
Guttate
d.
Erythrodermic - a.
Plaque
Which component of the epidermis initiates immune responses and provides a defense
against environmental antigens?
a.
Langerhans cells
b.
Merkel cells
c.
Keratinocytes
d.
Melanocytes - a.
Langerhans cells
Which cells of the dermis release histamine and play a role in the hypersensitivity
reactions of the skin?
a.
Histiocytes
b.
Fibroblasts
c.
Mast cells
d.
Macrophages - c.
Mast cells
Which cells of the dermis secrete connective tissue matrix?
a.
Macrophages
b.
Mast cells
c.
, Fibroblasts
d.
Histiocytes - c.
Fibroblasts
Which gland releases secretions that are important in thermoregulation and cooling of
the body through evaporation?
a.
Sebaceous
b.
Apocrine
c.
Eccrine
d.
Exocrine - c.
Eccrine
Which receptors of the sympathetic nervous system regulate heat loss through the
skin?
a.
Cholinergic
b.
ß-Adrenergic
c.
α-Adrenergic
d.
Anticholinergic - c.
α-Adrenergic
What is the first change in the skin that indicates a pressure ulcer?
a.
Blanchable erythema of intact skin
b.
Nonblanchable erythema of intact skin
c.
Blister at the site of pressure
d.
Reddish-purple discoloration - b.
Nonblanchable erythema of intact skin
Which type of dressings should be applied to pressure ulcers?
a.
Flat and dry
b.
Flat and moist
c.