Definition, Meaning & Synonyms

ionotropic

Adjective
/ˌaɪəˈnɒtrəpɪk/
Definition
Relating to a type of receptor that responds to the binding of a neurotransmitter or hormone by allowing ions to flow across a cell membrane, resulting in immediate changes in the cell’s electrical potential.
Examples
  • The ionotropic glutamate receptors play a key role in synaptic transmission.
  • Ionotropic effects can lead to rapid physiological responses.
  • In contrast to metabotropic receptors, ionotropic receptors trigger quick changes in the neuron’s activity.
Meaning
Ionotropic receptors are crucial in the transmission of signals in the nervous system by directly altering the membrane potential of a cell.
Synonyms
  • Fast-acting
  • Direct
  • Electrophysiological