Concept explainers
To determine:
The rate at which the body temperature will return to normal if out of desperation an individual have dunk his head into the cooler to get relief from heat.
Introduction:
In living organisms the
The endotherms are the animals that maintain their internal body temperature by thermoregulation as sudden change in the body temperature could be fatal for an organism. Endotherms get heat from the internal metabolic activities if the outside temperature is low and cool down their bodies by process of sweating if the outside temperature is high.
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CAMPBELL BIOLOGY IN FOCUS-TEXT,AP ED.
- Which of the following is not true about acclimatization? Acclimatization allows animals to compensate for changes in their environment Acclimatization improves function in a new environment Acclimatization occurs when an animal tries to reestablish a homeostatic set point Acclimatization is passed on to offspring of acclimated individuals.arrow_forwardplease explain how body will maintain homeostasis with osmoregulation, like in the picturearrow_forwardEndothermic animals can maintain consistent temperature conditions by generating, main- taining, and regulating their body heat. Under cold conditions, more body heat becomes lost to the environment. Endothermic ani- mals rely on different mechanisms that allow them to maintain their body heat. Which of the following mechanisms that occur in endothermic animals does not describe a mechanism by which they maintain their body heat under these types of conditions? A B с D Some endothermic animals hibernate during extreme environmental conditions, which decreases the rate of metabolic reaction and decreases heat loss. The tissues of the blood vessels of many endothermic animals can dilate and move closer to the skin, allowing for heat to move more readily into the environment. Shivering, which can occur involuntarily in most endothermic animals, produces rapid muscle contractions, which increase the rate of cellular respiration and thereby increase heat production. Layers of densely packed…arrow_forward
- Claude Bernard, a nineteenth-century French physiologist often considered the father of modern animal physiology, is still remembered today for his famous dictum: “Constancy of the internal environment is the condition for free life.” Does the study of thermal relations lend support to his dictum? Explain.arrow_forwardchart neededarrow_forwardHow long can you go? You may have heard the exploits of free divers, who dive to tremendous depths without any aid of scuba equipment. The world record for assisted free diving is held by Pipin Ferreras, who dove 170 m (558 ft) with the aid of a sled. Free diving is not without its dangers. Pipin’s wife Audrey died during a world record attempt. Free diving is facilitated by the dive reflex, which allows mammals to hold their breath for long periods of time underwater. Immersing one’s face in cold water includes bradycardia and diverts blood away from the periphery. How would these modifications increase the ability to free dive?arrow_forward
- Check Your Understanding 1. How do homeostasis and metabolism work together to keep an organism alivo 2. List and explain four methods that an organism such as a cat uses to stav warm on cooler days. 3. Many exercise and weight-loss programs encourage speeding up an individual's metabolism. Explain how a person could lose weight by increasing their exercise routine. sformationsarrow_forward11. Which option is correctarrow_forwardhypothesis question: to what extent does changing speed (4mph, 8mph, 12mph) when running at a constant time (8min) affect the body temperature (°C) and heart rate (bpm) of a 15 yr old female?arrow_forward
- constrict The regulation of body temperature is an example of a(n) mechanism because an above-normal body temperature stimulates mechanisms to decrease it, while a below- normal temperature causes changes to bring it up. dilate Вook positive feedback Print The thermostat is located in the part of the brain called the blood vessels erences hypothalamus When the core body temperature falls below normal, the negative feedback of the skin constrict and then receive nerve impulses to induce shivering to generate heat. sweat glands skeletal muscles When the body temperature is higher than normal, the blood vessels of the skin and the nervous system activates to cool the body by evaporation. cerebellum Resetarrow_forward) Make a prediction for the varying body temperatures in BOTH mammals and reptiles in the pet store and justify your predictions. (b) Explain the role that water plays in thermoregulation for mammals. refer to picturearrow_forwardAll else being equal, a warm chameleon sitting on a sunny tree branch will experience a decrease in body temperature due to conduction if: It changes color, and its new hue is a lighter color, reducing the amount of energy the chameleon absorbs from the sun. The branch is cooler than the chameleon, and heat moves directly from the warmer animal to the cooler branch. It opens its mouth, allowing water to evaporate from its tongue and cheeks. OA cold breeze moves over the chameleon, transferring heat from the warmer chameleon to the cooler, moving air.arrow_forward
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