*our body is tightly regulated to maintain an internal (core) temperature of 98.6 degrees F. Your body doesnot function properly if you get too hot or too cold, partially because protein enzymes get too "stiff" (coldtemperatures) or denatured (hot temperatures).If blood temperature rises too high, this is sensed by specialized neurons in the brain. They signal otherherve centers, which in turn send signals toʻthe blood vessels of the skin. As these blood vessels dilate,more blood flows close to the body surface and excess heat radiates from the body. If this is not enough tocool the body back to its set point, the brain activates sweating. Evaporation of sweat from the skin has astrong cooling effect, as we feel when we are sweaty and stand in front of a fan.In this example, the brain is a(n):а. гесеptorb. control centernentC. effectoreweet alands, are a(n):

Homeostasis is the ability of the body to maintain the equilibrium in the body. This equilibrium…

Answered: *our body is tightly regulated to…

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 5TAHL

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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
When body temperature decreases below the normal range, thermoreceptors in the skin and hypothalamus detect the decrease in body temperature. The heat-promoting center of the hypothalamus is activated, which sends signals to blood vessels and skeletal muscles. In response, blood vessels in the skin constrict and skeletal muscles shiver. Determine the part of this negative feedback loop that serves as the control center. O thermoreceptors O hypothalamus blood vessels and skeletal muscles O body temperature
Body temperature is homeostatically regulated around a set point. Given your knowledge of negative feedback and homeostatic control systems, predict whether narrowing or widening of the blood vessels of the skin will occur when a person exercises strenuously. (Hints: Muscle contraction generates heat. Narrowing of the vessels supplying an organ decreases blood flow through the organ, whereas vessel widening increases blood flow through the organ. The more warm blood flowing through the skin, the greater is the loss
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
Endothermic 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…
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?
In some diseases, an infection causes a high fever, resulting in a crisisstate. Once body temperature begins to return to normal, the person ison the way to recovery. If you were looking for symptoms in a personwho had just passed through the crisis state, would you look for dry,pale skin or flushed, wet skin? Explain.
Homeostasis is a natural phenomenon which is body’s tendency to maintain internal stable and favorable environment against any situation that would tend to disturb its normal condition and function. Such as, If the temperature rises, the body loses heat by sweating or panting, via the latent heat of evaporation. If it falls, this is counteracted by increased metabolic action, by shivering and in fur or feather coated animals, by thickening the coat. Like temperature our body can sense the change in osmolarity and to maintain a stable condition body needs to persist on a certain osmolarity. Secretion of certain hormones can be stimulated by any change in the osmolarity to help maintain a certain level of osmolarity - briefly discuss the mechanism of action and biochemical function of such a hormone.
17. Our body is tightly regulated to maintain an internal (core) temperature of 98.6 degrees F. Your body does not function properly if you get too hot or too cold, partially because protein enzymes get too "stiff" (cold temperatures) or denatured (hot temperatures). " blood temperature rises too high, this is sensed by specialized neurons in the brain. They signal other herve centers, which in turn send signals to'the blood vessels of the skin. As these blood vessels dilate, more blood flows close to the body surface and excess heat radiates from the body. If this is not enough to Cool the body back to its set point, the brain activates sweating. Evaporation of sweat from the skin has a strong cooling effect, as we feel when we are sweaty and stand in front of a fan. In this example, the brain is a(n): a. receptor b. control center C. effector In this example, the smooth muscle in blood vessels, or the sweat glands, are a(n): a. receptor b. control center C. effector • This is an…
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
DneostaSIS means maintaining a stable, approximately constant internal environment within an organism. O ose the external environment is constantly changing (temperature, chemicals, etc.), organisms must have a control system to detecting changes and responding to them.. Anything that must be maintained in the body within a normal range (the "set point") must have a control system. For example, body temperature, blood pressure, and blood glucose levels are all regulated. To cal Immmon ht 16. A homeostatic control mechanism consists of three parts. Fill in the blanks with the appropriate word for the analogy below. ast gool The variable or stimulus is the factor that is regulated (ex: room temperature / body temperature). A variable is like a teeter-totter. If it is perfectly balanced in the horizontal position, it is at the normal value called the ibeet (ex: 68° F/98.6° F). The (ex: thermometer / nerves in the skin) senses changes in the variable SC (temperature) and sends information…
All 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.

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