10. What is the anaerobic phase of work? How long will it last?11. Are humans homeothermic or poikilothermic?12. What are the main mechanisms of heat loss from the body?14. When an individual is in water, the convective heat loss term isgrea:ty increased. For water immersion, K. - 16.5 kcal/m hr°C.Assuming the BMR of a resting man is 72 kcal/hr, find the watertemperature at which the water heat loss is just balanced by the BMR.Assume A. = 1.75 m2 and T, = 34°C.15. Consider a nude male on a beach in Florida. It is a sunny day so he isreceiving radiation from the sun at the rate of 30 kcal/hr. He has aneffective body surface area of 0.9 m2, T, = 32°C, and the temperatureof his surroundings is 30°C.(a) Find the net energy gained by radiation per hour.(b) If there is a breeze at 4 m/sec, find the energy lost by convectionper hour.(c) If he loses 10 kcal/hr by respiration and his metabolic rate is 80kcal/hr, how much heat is lost by evaporation?16. Under typical conditions, what percent of the body heat loss is due torespiration?17. When is counter-current heat exchange involved in controlling theheat loss to the environment?18. What is a clo?

Here I am attempting the first upper three questions.

Answered: 10. What is the anaerobic phase of…

10. What is the anaerobic phase of work? How long will it låst? 11. Are humans homeothermic or poikilothermic? 12. What are the main mechanisms of heat loss from the body?

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter17: Energy Balance And Temperature Regulation

Section: Chapter Questions

Problem 15RE

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Question

10. What is the anaerobic phase of work? How long will it last?
11. Are humans homeothermic or poikilothermic?
12. What are the main mechanisms of heat loss from the body?
14. When an individual is in water, the convective heat loss term is
grea:ty increased. For water immersion, K. - 16.5 kcal/m hr°C.
Assuming the BMR of a resting man is 72 kcal/hr, find the water
temperature at which the water heat loss is just balanced by the BMR.
Assume A. = 1.75 m2 and T, = 34°C.
15. Consider a nude male on a beach in Florida. It is a sunny day so he is
receiving radiation from the sun at the rate of 30 kcal/hr. He has an
effective body surface area of 0.9 m2, T, = 32°C, and the temperature
of his surroundings is 30°C.
(a) Find the net energy gained by radiation per hour.
(b) If there is a breeze at 4 m/sec, find the energy lost by convection
per hour.
(c) If he loses 10 kcal/hr by respiration and his metabolic rate is 80
kcal/hr, how much heat is lost by evaporation?
16. Under typical conditions, what percent of the body heat loss is due to
respiration?
17. When is counter-current heat exchange involved in controlling the
heat loss to the environment?
18. What is a clo?

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