What is the role of blood vessels to control body temperature? * Blood vessels regulate the flow of oxygen in the blood to prevent hypoxia Blood vessels supplying the skin will widen or narrow. Blood vessels will become more elastic to allow a surge of blood and oxygen to the brain. Blood vessels move through the skin to supply enough warmth. No answer

What is the role of blood vessels to control body temperature? * Blood vessels regulate the flow of oxygen in the blood to prevent hypoxia Blood vessels supplying the skin will widen or narrow. Blood vessels will become more elastic to allow a surge of blood and oxygen to the brain. Blood vessels move through the skin to supply enough warmth. No answer

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter38: Introduction To Animal Organization And Physiology

Section: Chapter Questions

Problem 8TYK

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Figure 33.23 When bacteria are destroyed by leuckocytes, pyrogens are released into the blood. Pyrogens reset the body’s thermostat to a higher temperature, resulting in fever. How might pyrogens cause the body temperature to rise?
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 Reset
Riding a bicycle requires additional energy from leg muscles. Which of the following conditions may result from this activity, and which response helps restore the body to its normal condition? * decreased oxygen can be replaced by digesting an apple. increased carbon dioxide in the blood can be removed by breathing faster. increased sugars in the bloodstream can be diluted by drinking water. increased salt wastes can be removed by the heart. No answer
How does sweat keep us cool? * Sweat carries heat from one part of the body to another. How does sweat keep us cool? As sweat evaporates, it removes heat from the skin. The release of sweat also allows the heat from our body to escape. No answer
z uousənO In terms of homeostasis, what is the most likely response to an increase in environmental temperature? Blood vessel constriction "Goosebump" formation Producing Sweat shivering and muscle contraction
red that your friend is not as prepared for this adventure as you are. The weather this day started out comfortable around 65 degrees Fahrenheit (18 deg C) when you started hiking. As you hike your body creates heat, you get warm and you start to sweat. Sweat evaporates off the body and carries heat away from us. This is an example of homeostasis 2. After hiking for 2 hours you decide to stop at the above lake. You decide to go for a walk around the lake while your friend starts to set up camp. You return from your short hike to find your friend had fallen in the lake while you were gone. He reports he is starting to get cold. What will be the most reliable sign he has transitioned from mild to moderate hypothermia? He becomes confused He starts laughing for no reason He stops shivering O. His lips turn blue 3. You take over setting up camp and shortly thereafter you find him sitting next to his pack, staring off into space and doesn't pay attention when you say his name. You rely on…
In this example your body is reacting to you suddenly stepping outside into 30 degree weather after being inside at 20 degrees. match the correct stage with the example of what should be happening to your body • Hot outside air temperature is felt through thermodetectors in your skin and starts to impact how cells, enzymes & body function. •Thermostat is hypothalamus activated cooling mechanisms. • skin blood vessels dilate and sweat glands are activated. •Thermostat is hypothalamus registers internal temperature decrease and is triggered to shut off cooling mechanisms. • internal body temperature remains stable at 37. Homeostasis Imbalance Body reacts Negative feedback correction
Which of the following best describes an example of negative feedback? The body starts shivering to generate heat when you detect you are too warm. The feeling of hunger after you've just had a big meal. The increase in breathing rate when the body detects you are low on oxygen and high on CO2. A decreased heart rate in response aerobic exercise. The body sweating when the temperature gets too cold.
body temperature falls normal body temperature Feedback: body temperature falls Feedback: body temperature rises body temperature rises vasoconstriction Response: Vasodilation Normal body temperature FACY AS SPARENT O ICH AE EDUATE ATIO Response: Vasoconstriction vasodilation Stimulus: Increase in Body Temperature Stimulus: Decrease in Body Temperature UN
How could the increasing global temperature associated with climate change impact ectotherms? Ectotherm diversity will decrease in cool regions Ectotherms will be able to be active all day in the tropics Ectotherms will have to expend more energy to cool their body temperatures Ectotherms will be able to expand into new habitats.
Figure 33.21 State whether each of the following processes are regulated by a positive feedback loop or a negative feedback loop. A person feels satiated after eating a large meal. The blood has plenty of red blood cells. As a result, erythropoietin, a hormone that stimulates the production of new red blood cells, is no longer released from the kidney.
Imagine you are sick and you have fever. Sensors on the skin and brain detect this and communicate with the temperature regulatory center in the brain which then sends out a command to the sweat glands of your body as a result of which you start sweating and in about 15 mins your body temperature comes back to normal for the time being. This this feedback loop, identify the following: sensors control center effector stimulus response