TEMPERATURA ČLOVEŠKEGA TELESA

Brdnik, Simona

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Title:	TEMPERATURA ČLOVEŠKEGA TELESA
Authors:	ID Brdnik, Simona (Author) ID Bradač, Zlatko (Mentor) More about this mentor...
Files:	VS_Brdnik_Simona_2010.pdf (801,98 KB) MD5: C71E14B00CD302829DE28D9AE925B0DA PID: 20.500.12556/dkum/e6b69c13-f68e-4a76-afdf-b7824d99758c
Language:	Slovenian
Work type:	Undergraduate thesis
Organization:	PEF - Faculty of Education
Abstract:	POVZETEK Termoregulacijski center človeškega telesa deluje kot termostat, ki zmanjšuje ali povečuje produkcijo metabolične toplote. Pri temperaturah zunanjega okolja okoli 30 °C se zmanjša temperaturni gradient med okoljem in površino kože, s čimer se zmanjša tudi gradient med jedrom ter lupino človeškega telesa. Oddajanje toplote s prevajanjem in sevanjem je premalo, zato nastopi oddajanje z znojenjem. Visoka relativna vlaga ovira oddajanje toplote z izhlapevanjem znoja. Posledica nezadostnega oddajanja toplote pa je naraščanje notranje temperature, ki zmanjšuje posameznikovo zmogljivost. Človeško telo oddaja toploto predvsem na tri načine, in sicer s sevanjem, s toplotnim prevajanjem in izhlapevanjem znoja ali vode. Kot vsa ogreta telesa tudi organizem oddaja elektromagnetne valove ali pa jih sprejema s sevanjem, vse to pa se dogaja zaradi njegove temperature. V stiku s kožo se zrak v okolici ohlaja ali segreva s toplotnim prevajanjem — kondukcijo. S kondukcijo se toplota odvaja s kože samo takrat, ko je okolje hladnejše od nje, medtem ko se med izhlapevanjem vode in znoja s telesnega površja telo vedno ohlaja in toplota se izrabi kot izparilna toplota za vodo. Te izgube lahko uravnavamo z manjšo in večjo toplotno izolacijo.
Keywords:	Ključne besede: telesna temperatura, toplota, energija, metabolizem, sevanje, izhlapevanje.
Place of publishing:	Maribor
Publisher:	[S. Brdnik]
Year of publishing:	2010
PID:	20.500.12556/DKUM-13400
UDC:	53(043.2)
COBISS.SI-ID:	17534216
NUK URN:	URN:SI:UM:DK:4QHLL2ZB
Publication date in DKUM:	13.04.2010
Views:	8370
Downloads:	446
Metadata:
Categories:	PEF
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Secondary language

Language:	English
Title:	THE TEMPERATURE OF HUMAN BODY
Abstract:	ABSTRACT Thermoregulatory centre of the human body acts as a thermostat that lowers or increases the production of metabolic heat. At the temperature of the outside environment around 30°C the temperature gradient between the environment and the skin surface lowers, and due to the same reason the gradient between the core and the shell of the human body lowers as well. Heat release with conduction and radiation is too low, therefore, heat release with sweating occurs. High relative humidity obstructs the release of heat with sweat evaporation. The result of the insufficient heat release is the rising of inner temperature which lowers the individual’s efficiency. Human body releases heat in three important ways: by radiation, heat conduction and sweat or water evaporation. As all heated bodies the human organism gives away electromagnetic waves as well accepts them with radiation; all this happens due to the temperature. In contact with the skin the air in the surroundings cools or heats with heat conduction. With conduction the heat dissipates from the skin only when the environment is cooler than the skin; meanwhile the body always cools down during evaporation of water and sweat from the body surface and the heat is used as evaporation heat for water. These losses can be regulated with lower or higher heat insulation.
Keywords:	body temperature, heat, energy, metabolism, radiation, evaporation

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