Org Sys - 10 - Thermoregulation

Front 1

Radiation

Back 1

transfer of heat b/t non-touching objects down a temp gradient (hotter to cooler) in the form of infrared waves

The hotter object is, the more heat it radiates

if the surrounding environment is cooler, then you will radiate more heat than you absorb

Front 2

Conduction

Back 2

transfer of heat b/t 2 touching objects down a temp gradient (hotter to cooler)

Also includes AIR

if air is warmer than you, then you will absorb heat from the air

Front 3

What does rate of conduction depend on

Back 3

heat capacity of the substance that you are in contact with

temperature difference b/t your body and the air

convection currents of the air immediately surrounding your body

Front 4

Evaporation

Back 4

Removes heat to LOWER the body temp

remove the saturated humid air immediately surrounding your body via convection so that drier air can come in and pick up more sweat

Front 5

Malignant Hyperthermia

Back 5

react oddly to certain general anesthetics

these people have a lower threshold for releasing Ca ++ from the sarcoplasmic reticulum

as soon as anesthesia is administered, muscles start contracting and body temperature rapidly rises

Death because SA node stops function at 108*F