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10 Cards in this Set
- Front
- Back
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Homeostasis |
the maintenance of a stable internal environment. |
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Multicellular |
made up of many cells. |
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Hormone |
chemical secreted by endocrine gland which brings about a reponse in an organ elsewhere in the body |
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plant growth regulator |
plant hormones |
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nerves |
a group of axons an dendrons surrounded by a protective covering that tranFER information as electrical impulses. |
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cell signalling |
communication between one cell and another |
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nerves and hormones pass information from one cell to another, and therefore take part in a process called... |
...cell signalling |
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negative feedback |
a mechanism by which a change in a parameter is detected which brings about a response that moves the parameter back towards the norm |
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receptor |
cell that detects a stimulus |
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effector |
organ that carries out an action in response to stimulus e.g. a muscle that contracts or a gland that secretes a substance |
