Temperature and heat

Normal temp Celsius and Kelvin

36 - 37 Celsius 309.15 - 310.15 Kelvin body temp 273.15 Kelvin diff

Hypothermia

Under 33 Celsius Severe if under 20, slower nerve transmission, impaired metabolism.

Hyperthermia

43 < Hyperthermia, Tissue necrosis, Protein denaturation

Sample and cell storage temp

-10 Celsius to -30 Celsius

Mechanisms of heat transfer

Conduction, convection, radiation, evaporation

Main regulatory response

Sweating, shivering, vasodilation/vasoconstriction, Controlled by hypothalamus

Which of the following best defines temperature?

The average kinetic energy of a system/body

The main mechanism of heat loss during exercise is:

Evaporation

Define temperature

The average kinetic energy of a system ie the average chaotic movement of particles in a system/body. Ek= mv²/2

Outside of it is the surrounding

Ek = MassVelocity² / 2

V = Volume. p = Pressure T = temperature U - Internal energy

How does heat flow?

Always from hot to cold Q = Heat

Heat is measured in the unit

Joule is the SI unit of work, energy or heat

Triangle represents

A change or difference in quantity

Measurement methods

Manometric thermometersExpansion of gas or liquid, metallic deformation in metallic thermometers,

Heat generation, Basal Metabolism

Breakdown of ATP, muscle activity and contraction, hormonal thermogenesis, non shivering thermogenesis babies