Module 4.1 - Intro to Bioheat Transport Flashcards
At which temperature is the body’s core regulated to ensure optimal cell function?
37ºC
Basal metabolic rate of The Standard Human
72 kcal/h
Surface area (1.8m2) of The Standard Human only considers the human standing like a ______
Starfish (standing still = 80% exposed)
Body temp is monitored in the:
Hypothalamus
Heat generated by metabolism moves through the body by:
Convection
To keep a healthy thyroid, take ________
VitaminD
Why do we shiver?
Body stimulates heat production because the muscles movement generates heat to protect the core
When exercising, generated heat can cause one’s core temperature to rise by __ºC every __ minutes.
1ºC, 8 minutes
Why do we become flushed when we exercise?
Exercise > vessels dilate > less resistance and higher blood flow > become flushed as blood reaches skin
T/F: air and water causes worse convection to the environment than just air
F: air and water induce better convection
3 methods of thermoregulation
Convection, radiation, and evaporation
How much water do we lose from our bodies each day through evaporation?
600mL/day
Forced vs. free convection
Forced: forced convective oven distributes air evenly
Free: alone in a room, no wind anywhere, small amount of convection generated due to density increasing/decreasing around person because of heat they omit (local velocity profile generated)
Evaporative heat losses occur by 3 mechanisms:
- Diffusion thru skin
- Evap of sweat
- Evap of water into inspired air
