Heat Gained by Body
Heat is released within the body ⇒ result of metabolic activities. ⇒ such as cellular respiration High levels of cellular respiration ⇒ takes place in muscles and liver. ⇒ thus large amount of heat is released in these organs. ⇒ heat is distributed to rest of the body via bloodstream.
Body can also gain extra heat through:
- vigorous muscular excersise
- consumption of hot food
- Being in warm env ⇒ eg being outdoors
Excess heat needs to be removed from the body ⇒ if not one could die of overheating.
Heat Lost by the Body
heat is lost:
- through the skin
- by evaporation of water in sweat from the surface of the skin
- in the feces and urine
- in the air that is exhaled
amount of blood flowing through skin capillaries per unit time affects heat loss through skin surface.
