excitatornímu

Excitatornímu is a Czech word meaning "excitatory" or "stimulating." In a biological context, it refers to a process or substance that increases the activity of a nerve cell or muscle. When a neuron receives an excitatory signal, it becomes more likely to fire an action potential, transmitting information to other cells. This is typically achieved through the release of neurotransmitters that bind to receptors on the postsynaptic membrane, causing depolarization. Examples of excitatory neurotransmitters include glutamate and acetylcholine. In contrast, inhibitory signals decrease the likelihood of a neuron firing. The balance between excitatory and inhibitory signaling is crucial for proper nervous system function. Dysregulation of excitatory neurotransmission is implicated in various neurological conditions, such as epilepsy and stroke. The term can also be used more broadly to describe anything that causes excitement or arousal, not necessarily in a physiological sense.