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8 Cards in this Set
- Front
- Back
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The baroreflex is an example of a _______ (neg feedback/pos feedback/feed forward) mechanism
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negative feedback
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A decrease in blood pressure would cause a(n) __________ (increase/decrease) in baroreceptor firing which would result in medullary controller _________ (activating/inhibiting) the sympathetic nervous response, causing a(n) ___________ (increase/decrease) in blood pressure.
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decrease, activate, increase
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______________ (neg feedback/pos feedback/feed forward) systems are local and can operate without a distinct controller
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positive feedback
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LH surge during the menstrual cycle utilizes a __________ (neg feedback/pos feedback/feed forward) system
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positive feedback
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The advantage of feed forward systems is that they can respond to a disturbance without having to wait for a sensor to indicate the change in the regulated variable. What is the disadvantage?
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There is no signal indicating whether or not the response was appropriate. This could cause an 'overshoot' in the response to a disturbance.
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The increase in ventilation prior to exercise is an example of a _________ (neg feedback/pos feedback/feed forward) system
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feed forward
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What were the two examples in class of combining feedback and feedforward mechanisms?
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Increase in salt concentration in the blood causes the kidneys to retain water. This is an example of a ___________ (neg feedback/pos feedback/feedforward) mechanism
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negative feedback
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