Thermoregulation Flashcards
Why babies more at risk
Increased surface area to body weight ratio
Non shivering chemical thermogenesis
Release of norepinephrine from sympathetic nervous system, leads to brown fat metabolism
Brown fat
Rich in mitochondria (energy), differentiates between 26-30 weeks
Between scapulae, along spinal column around neck, behind heart and great vessels, by the kidneys
Gluconeogenesis
Turns proteins and fats into glucose, happens once brown fat is used up
Conduction
Transfer of heat from warm surface to cold surface (2 objects touching)
Convection
Transfer of heat to colder air of the environment
Depends on air current velocity
(Drafty room)
Evaporation
Number on mode of heat loss for premies in first week
Transfer of heat through water loss
Thin stratum corneum in first week, keratinized by 1 week old in term babies
Wet baby
Radiation
Number one mode of heat loss for premies after first week
Transfer of heat between two objects that don’t touch
(Near a cold window)