Exam 15: Fluid and Acidbase Balance

Aspirin reduces a fever by inhibiting the synthesis of prostaglandins.

The most important factor influencing heat transfer by radiation is the relative humidity of the atmosphere.

We lose or gain heat through ____________________ to the layer of air in direct contact with our bodies.

Match the heat exchange terms labelled a. through d. with their descriptions. a.convection b.evaporation c.radiation d.conduction -transfer of heat between objects that are in direct contact with each other and have different temperatures

The ____________________ serves as the body's thermostat.

Which of these statements correctly describes radiation?

Heat loss from the body by evaporation occurs even in very cold weather.

Which of these statements does NOT correctly describe sweating?

Match the items labelled a. through e. with their descriptions. a.energy equivalent of oxygen b.external work c.calorie d.basal metabolic rate e.internal work -all forms of biological energy expenditure that do not accomplish work outside the body

Describe the physiological changes that occur during heat stroke.

The feeding and satiety centres are located in the hypothalamus.

Match the heat exchange terms labelled a. through d. with their descriptions. a.convection b.evaporation c.radiation d.conduction -transfer of heat by air or water currents

Match the terms labelled a. through g. with the correct characteristic. a.hypothermia b.obesity c.frostbite d.hyperthermia e.anorexia f.heat stroke g.heat exhaustion -heat loss mechanisms are absent despite the fact that the body temperature is rapidly rising

Sweating is the only mechanism for heat loss when body temperature is the same as environmental temperature.

How can a person lose heat to an environment warmer than the body?

Match the items labelled a. through e. with their descriptions. a.energy equivalent of oxygen b.external work c.calorie d.basal metabolic rate e.internal work -energy expended by contracting skeletal muscles to move external objects or to move the body

Sweating is the only mechanism for heat loss when body temperature is the same as environmental temperature.