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If calcium levels within a man’s blood drop too low it can result in twitching, depression, coma, or even death. Which characteristic of life is the man being affected by? |
Living things must maintain homeostasis. |
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Along with sensory receptors, _____ transport information to the integrating center. |
signal pathways |
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_____ is a control mechanism that intensifies an earlier reaction. |
Positive feedback |
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Claude Bernard first recognized _____. |
separate fluids outside and inside the cell |
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The response of an effector is _____. |
to maintain homeostasis |
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After receiving a stimulus, the _____ send(s) signals to the appropriate area of the body. |
integrating center |
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Organisms have the ability to regulate their internal environment in order to maintain a steady state called _____. |
homeosasis |
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Positive feedback is most like _____. |
adding wood to a burning fire to increase the heat |
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Negative feedback is most like _____. |
an air conditioner that turns on if the temperature gets too hot |
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Environmental change that triggers a definite action on the part of the organism serves as a(n) _____. |
stimulus |
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A plant may open and close its stomata to prevent excess water loss and maintain ____ |
homeostasis |
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When a woman goes into labor during childbirth, the cervix expands which sends a signal to the pituitary gland to release oxytocin which results in more contractions which results in more oxytocin being released and so on. What is happening during childbirth? |
A positive feedback loop. |
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_____ occurs when the response serves to counteract the stimulus. |
Negative feedback |
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How do some plants survive the intense desert heat and drought? |
Plants close their stomata during times of intense heat or drought in order to prevent water loss and maintain homeostasis. |
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An example of maintaining homeostasis at the system level would be _____. |
breathing faster while jogging |
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