生理学重要名词解释英文版.pdf

精品文档 Internal environment : 内环境 refers to the liquid surrounding the cells in the body of multicellular animals, that is extracellular fluid. Homeostasis 稳态 : refers to a state of relatively constant of physical and chemical properties of internal environment, such as temperature, pH, osmotic pressure and all kinds of liquid ingredients in the body, and so on. positive feedback 正反馈 : A change in a condition leads to responses from the effectors which a mplifies that change negative feedback 负反馈 : A change in a condition leads to responses from the effectors which counteracts that change facilitated diffusion via carrier 经载体易化扩散 : Water soluble small molecules and ions under the carrier protein mediated, cross the plasma membrane follow concentration gradient facilitated diffusion via ion channel 经通道易化扩散 : All kinds of charged ions under the channel proteins mediated, cross the plasma membranefollow concentration gradient and potential gradient Primary active transport 原发性主动转运 : making direct use of energy derived from ATP to transport the ions across the cell membrane Secondary active transport 次级主动转运 : The ion gradients established by primary active transport permits the transport of other substances against their concentration gradients resting potential 静息电位 : A potential difference across the membranes of inactive cells, with the inside of the cell negative relative to the outside of the cell action potential 动作电位 : Someof the cells (excitable cells) are capable to rapidly reverse their resting membrane potential from negative resting values to slightly positive values. This tr