Controlling Body Temperature (B1)

Homeostasis - keeping your internal body conditions constant

Body temperature must be maintained at 37

Too high (above 40) - heat stroke/dehydration - enzymes denature

Too low (below 35) - hypothermia - enzymes work too slowly

We LOSE heat by:

• Radiation - from our skin surface
• Conduction - by toughing cold objects or water
• Evaporation of water - sweat/wet skin

We can help by:

• Reducing exercise
• Wearing fewer clothes
• Increasing blood flow to the surface (vasosdilation)

We…