Unlike an electrical synapse, the chemical synapses are separated by a space called the synaptic cleft, typically measured between 15 and 25 nm. Transmission of an excitatory signal involves several steps outlined below.
Definition of cap. 1  1a : a head covering especially with a visor and no brimb : a distinctive head covering emblematic of a position or office: such as (1) : a cardinal's biretta (2) : mortarboard.
In Canadian English, knit caps are also known as a tuque (pronounced /ËtuËk/; also spelled touque or toque, a word closely related to the French word toque, originally referring to a traditional headwear and now used for a type of chef's hat (short for toque blanche, meaning white hat).