When the mammalian brain compares the actual temperature of the body to the preferred temperature of the body, which general component is being used?
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When the mammalian brain compares the actual temperature of the body to the preferred temperature of the body, which general component is being used?
Question 24 options:
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Sensor. |
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Intergrator. |
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Effector. |
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Motor. |
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- Which of the following statements is CORRECT in describing the positive feedback control systems in our body? Group of answer choices The response counteracts the stimulus, shutting off the response loop. The response reinforces the stimulus, sending the variable farther from the set-point. The response is able to move the variable closer to the set-point. The response is able to move the variable farther from the set-point by suppressing the stimulus.Help me pleaseList four factors that might influence the reaction time to a stimulus .Consider the ruler drop response time test you performed; do you believe it was valid and reliable? Why or why not ? Provide justifications for your answer. [Hints: Here are a few ideas. Will you conduct many tests on the same subjects (that means the people you are testing))? Is it necessary to use averages? Are there any precautions to take? [Are there any variables that must remain constant?]
- In a negative feedback loop, the effector moves the system in the direction as the stimulus.What component of control mechanism produces a response in the body? Group of answer choices stimulus control center receptor effectorsThe autonomous nervous system regulates involuntary functions of the body and can be subdivided into the sympathetic and the parasympathetic nervous system. Both of these systems control the same group of body functions, but have opposite effects on the functions they regulate. The sympathetic nervous system prepares the body for intense physical activity like the fight-or-flight response. The parasympathetic nervous system has the opposite effect and relaxes the body and inhibits or slows many high energy functions. Which of the following involuntary effects in the body are brought about by the sympathetic nervous system during a fight-or- flight situation? i. Increased salivation ii. Increased digestion ii. Loss of bowel and bladder control iv. Body shivering Сrying Pupil dilation B. i, iv and v V. vi. A. i, ii and vi C. iii, iv and vi D. iii and v
- The overall word limit for this task is 500 words (+/-10%). You must cite the sources that you use in-text and provide a reference list. Question 1 (AC 2.1) Examine the diagram which illustrates how the body controls homeostasis. Input: Information sent along afferent pathway to Receptor (sensor) 2 Change detected by receptor 1 Stimulus: Produces change in variable Imbalance Control center Variable (in homeostasis) positivenegative-feedback-mechanisms/(accessed 06/01/20). Imbalance 4 Output: Information sent along efferent pathway to Effector 5 Response of effector feeds back to influence magnitude of stimulus and returns variable to homeostasis Image source: https://anatomyandphysiologyi.com/homeostasis- a) Receptors (sensors) form the first part of the control mechanism. What is a receptor? Provide an explanation then give one example of where a receptor is found, explaining its role is in monitoring homeostasis. b) Draw a simple summary diagram displaying the different levels of…If the response to a stimulus is a change from a negative potential to a less negative potential, the change is called: stimulus response Repolarization Depolarization Stimulus recoveryThe venom of some cobras contains a mixture of substances that have a variety of physiological effects. One substance in the venom works by preventing acetylcholine from binding to muscle receptors. Which of the following describes the effect of the venom on the prey of the cobra? Question 5 options: Muscle contractions are prevented, causing paralysis. Muscle contractions occur, but refractory periods would be longer. Action potentials are continuously generated, causing tetanus. Weak muscle contractions occur but are limited by ATP production by glycolysis.
- Which of the following stimuli (s) produces a propagating depolarization? Group of answer options Below the threshold (subthreshold) Maximum stimuli Threshold stimuli Supramaximal stimuliIn describing a positive feedback loop, which of the following would be true? a) the sensor and control center are always the same b) the effector signals the control center to shut off the initial stimulus c) the effect shuts off the initial stimulus d) the effect amplifies the initial stimuAlcohol addiction is a condition in which a person experiencesdependent on alcohol and difficult to control its consumption. On the other hand, excessive alcohol consumption in the long term can cause disturbances in brain performance, including disturbances in memory, attention, coordination, and locomotion. How does alcohol affect the functioning of nerve cells and the central nervous system? What is the mechanism that occurs? Based on information from the literature, analyze what will happen to coordination and locomotion in someone who is addicted to alcohol and consumes large amounts of alcohol over a long period of time.