Flashcards in Skin and Temperature Control Deck (20):
What factor cause core body temperature to vary?
What detects body temperature?
Where are peripheral thermoreceptors found in the body?
Skin, especially in face, scrotum
Where are central thermoreceptors found in the body?
How is heat generated in the body in response to cold stress?
Voluntary muscular activity
How is heat loss from the body reduced in response to cold stress?
What is hypothermia?
A fall in deep body temperature to below 35C
Who is at risk of cold stress?
Cold store workers
What is the treatment for cold stress?
Dry/insulate to prevent further heat loss
Slow re-warming (bags, blankets, hot drinks, warm air)
Fast re-warming (immersion in water, extracorporeal circulation)
What vascular effects occur due to cold stress?
Increase in viscosity
How is heat production minimised in response to heat stress?
Decreased physical activity
Decreased food intake
How is heat loss from the body increased in response to heat stress?
What is heat exhaustion?
Body temperature raised in range 37.5-40C
What are the symptoms of heat exhaustion?
Fainting and collapse
How is heat exhaustion caused?
Disturbance of the body's fluid/salt balance due to excessive sweating
What is heat stroke?
Body temperature raised above 40C
What are the symptoms of heat stroke?
Hot dry skin
Who is at risk of heat stress?
Physical work in hot humid environments
Workers wearing non breathable protective clothing
What is the treatment for heat stress?
Move to cooler environment
Sponge with tepid water
Give fluids (oral, IV)