释义 |
ion channel noun[ C ] anatomy specializeduk /ˈaɪ.ɒn ˌtʃæn.əl/ us /ˈaɪ.ɑːn ˌtʃæn.əl/ a protein structure in a cell membrane(= the outer covering of a cell) in the body that allows particular substances to pass through the membrane: We study ion channels, the molecular gates on the membranes of our cells. Computational biology includes the study of cardiac ion channels and cell electrophysiology. These molecules, known as ion channels, let charged particles into cells. The sodium is only able to pass into the membrane through sodium ion channels distributed along the axon. The abnormality of the ion channels slows the recovery phase of the heartbeat. SMART Vocabulary: related words and phrases Cells actin anaphase anti-platelet assort axoplasm histochemistry histography homologous chromosomes infiltration intercellular nerve fibre neurofibril neurofibrillary neuroglia neuroglial tetrad thrombocyte thymocyte turgor unciliated |