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מה אנו יודעים על ויסות החום?

מה אנו יודעים על ויסות החום?. היסטוריה " על קצה המזלג " עקרונות בקרה ויסות חום באדם. Hippocrates Balance . בעלי דם קר. בעלי דם חם. ) Poikilo- "רב-פנים" (. Homoio-become alike. Ectotherms. Endotherms During activity. Temperature. hyperthermia. 37.5 37.0 36.5.

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מה אנו יודעים על ויסות החום?

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  1. מה אנו יודעים על ויסות החום? היסטוריה "על קצה המזלג" עקרונות בקרה ויסות חום באדם

  2. Hippocrates Balance

  3. בעלי דם קר בעלי דם חם )Poikilo-"רב-פנים" ( Homoio-become alike Ectotherms Endotherms During activity

  4. Temperature hyperthermia 37.5 37.0 36.5 Tset. Trec hypothermia 0 04160416 Time of the day

  5. rectal 38 36 head trunk 30 28 26 feet 2426 30 32 34 Skin Temp

  6. מאזן חום אידוי פיזור חום ייצור חום מוליכות חום

  7. מאזן חום HS=MET±R ±C ±K-E Heat Storage-HS Metabolism -M Convection-C Conductance-K Radiation-R Evaporation-E

  8. Dry Heat Exchange with the environment Conductive heat exchange: heat transfer through a non-moving materials (K) Convection: heat transfer via moving gas or liquid (C) Radiation: Electromagnetic particles flow; heat release upon collision Efficiency Depends on: 1.Temperature gradient 2. Exposed Surface Area Specifically,K depends on thermal conductivity of the surface C– depends on wind speed R - depends on wave length

  9. Thermal conductivity of the body thermal shell during exposure to heat and cold

  10. 37 ±0.2 °C Tb T°C TNZ ml O2/min 24 28 Ambient Temperature (°C)

  11. 34°C Cardiovascular 37 ±0.2 °C Tb R+C max 24°C Tsk Vasodilatation Vasoconstriction min 24 28 AMBIENT TEMPERATURE T°C O2

  12. 34°C Cardiovascular 37 ±0.2 °C Tb T°C R+C max 24°C Tsk Vasodilatation O2 Vasoconstriction SWEAT min 24 28 AMBIENT TEMPERATURE

  13. Dry and wet heat exchange at different ambient Temp. evaporation C+K Radiation

  14. Components of the thermoregulatory system WR-Warm receotors CR-cold receptors PO/AH-preoptic and anterior hypothalamic areas

  15. Effectors in Temperature regulation Cardiovascular system Evaporative cooling

  16. תפקוד מחזור הדם בויסות חום 1- בקרה על מוליכות תרמית של הקליפה התרמלית של הגוף 2 – הסעת חום מהליבה לעור 3 – אספקת נוזלים לקרור על ידי אידוי

  17. Anatomical adaptations:AVA

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