BIOD 331 PATHOPHYSIOLOGY EXAM 2
COMPREHENSIVE QUESTIONS AND
SOLUTIONS
◉ Second-degree burn (Partial-thickness)
Answer: Affects epidermis and dermis; characterized by blister
formation.
◉ Third-degree burn (Full-thickness)
Answer: Destroys epidermis, dermis, hypodermis, and
subcutaneous tissues.
◉ Fourth-degree burn
Answer: Full-thickness burn extending into deep tissues, muscle,
and bone.
◉ Pathophysiology of burn-induced hypovolemic shock
Answer: Inflammation increases capillary permeability, causing
fluid shifts into tissues and edema.
◉ Clinical signs of smoke inhalation injury
Answer: Singed nasal hair, wheezing, dyspnea, and black-tinged
sputum.
, ◉ Primary functions of intact skin
Answer: First line of defense, prevents fluid loss, regulates
temperature, sensory perception, synthesizes vitamin D.
◉ Fissure (Skin lesion)
Answer: Linear crack in skin extending into dermis, causing pain
and bleeding.
◉ Contact dermatitis
Answer: Pruritic skin inflammation caused by direct contact with
chemicals or irritants.
◉ Psoriasis pathophysiology
Answer: T-cell activation drives rapid keratinocyte proliferation,
creating silvery scaly plaques.
◉ Pustule
Answer: Elevated, red lesion containing purulent exudate (pus).
◉ Vitiligo vs. Albinism
Answer: Vitiligo is localized melanocyte loss; albinism is complete
body-wide lack of melanin production.
◉ Melanoma ABCDE criteria
COMPREHENSIVE QUESTIONS AND
SOLUTIONS
◉ Second-degree burn (Partial-thickness)
Answer: Affects epidermis and dermis; characterized by blister
formation.
◉ Third-degree burn (Full-thickness)
Answer: Destroys epidermis, dermis, hypodermis, and
subcutaneous tissues.
◉ Fourth-degree burn
Answer: Full-thickness burn extending into deep tissues, muscle,
and bone.
◉ Pathophysiology of burn-induced hypovolemic shock
Answer: Inflammation increases capillary permeability, causing
fluid shifts into tissues and edema.
◉ Clinical signs of smoke inhalation injury
Answer: Singed nasal hair, wheezing, dyspnea, and black-tinged
sputum.
, ◉ Primary functions of intact skin
Answer: First line of defense, prevents fluid loss, regulates
temperature, sensory perception, synthesizes vitamin D.
◉ Fissure (Skin lesion)
Answer: Linear crack in skin extending into dermis, causing pain
and bleeding.
◉ Contact dermatitis
Answer: Pruritic skin inflammation caused by direct contact with
chemicals or irritants.
◉ Psoriasis pathophysiology
Answer: T-cell activation drives rapid keratinocyte proliferation,
creating silvery scaly plaques.
◉ Pustule
Answer: Elevated, red lesion containing purulent exudate (pus).
◉ Vitiligo vs. Albinism
Answer: Vitiligo is localized melanocyte loss; albinism is complete
body-wide lack of melanin production.
◉ Melanoma ABCDE criteria
