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Regulation Vocab
Term | Definition |
---|---|
regulation | the adaption of form or behavior of an organism to changed conditions. |
stimulus | a thing or event that envokes a specific functional reaction in an organ or tissue |
neuron | a nerve cell that transmits nerve impulses |
impulse | a signal that travels in the nervous system and releases neurotransmitters. |
effector | a small molecule that binds to a protein and regulates its biological activity. |
receptor | protein molecule that receives chemical signals from outside a cell. |
neurotransmitters | a chemical substance that is released at the end of a nerve fiber. |
irritability | the ability that living organisms have to respond to changes in their environment. |
dendrites | the top of a nerve cell that is the first part of the cell to receive the signals |
cyton( cell body) | the central part of the nerve cell |
axon | the long thread like part of the nerve cell |
hormones | chemical messengers |
glands | part of the body that secretes particular chemical substances |
target cells/tissue/organs | a cell that has a specific receptor for an antigen or hormone or drug |
hypothalamus | the region of the brain that controls the autonomic nervous system |
hyposecretion | production of bodily secretion at an abnormally slow rate |
hypersecretion | production of bodily secretion at an abnormally fast rate |
feedback mechanism | a system in which the system responds to a perturbation |
reflex | an immediate involuntary action to a stimulus |
cerebrum | one of the main parts of the brain that controls voluntary actions and balance |
cerebellum | one of the main parts of the brain that controls the central regulation of movement |
medulla oblongata | one of the main parts of the brain that controls vital body functions |