Question

grace, an elderly woman, experiences dangerously high blood temperatures during a heatwave. this is most likely due to
b and c
decreased sweat gland activity
decreased blood supply to the dermis
reduction in the number of langerhans cells

Explanation:

To determine why an elderly woman like Grace has high blood temperature in a heatwave, we analyze each option:

• Decreased sweat gland activity: Elderly people often have reduced sweat gland function, so they can't cool down via sweating effectively.
• Decreased blood supply to the dermis: Reduced blood flow to the skin (dermis) means less heat can be dissipated through the skin's surface.
• Reduction in Langerhans cells: Langerhans cells are part of the immune system (related to skin immunity), not thermoregulation, so this doesn't directly cause high body temperature.

Since both decreased sweat gland activity (option B) and decreased blood supply to the dermis (option C) relate to thermoregulation issues in the elderly, the correct answer is "B and c".

Answer:

B and c