A patient with a rare genetic mutation has significantly reduced keratin filament cross-linking in their epidermal cells. Which consequence follows regarding skin integrity?

💡 Explanation

Reduced keratin cross-linking impairs the skin's mechanical strength because these filaments provide structural integrity and resist physical stresses. Therefore, the skin becomes more susceptible to damage from abrasion, rather than altered melanin production, sebum secretion, or collagen synthesis.

• Why does melanin synthesis increase after UVB exposure?
• A person with a genetic defect has normal B-cells but non-functional helper T-cells. Which immunological effect results when they are exposed to a novel bacterial pathogen?
• Which outcome results when thyroglobulin production malfunctions in the thyroid?
• A patient experiencing severe fatigue and neurological issues presents with diagnosed beriberi. What explains the underlying cause of these symptoms in this condition?
• Why does interstitial edema impair oxygen diffusion from alveoli to pulmonary capillaries in acute respiratory distress syndrome (ARDS)?
• Why does an individual with advanced osteoarthritis in their knee experience increased pain during activities requiring repetitive knee flexion, such as stair climbing or squatting?