Translation of "synaptic cleft" into Icelandic

How are released neurotransmitters cleared from the synaptic cleft: Enzymatic destruction and diffusion. Released neurotransmitters are cleared from the synaptic cleft by enzymatic destruction (breakdown by enzymes) and diffusion away from the synapse. In some cases, reuptake into the presynaptic neuron also occurs, but exocytosis and endocytosis are not involved in the clearance process.