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 addition, if all caps must be used it is customary to slightly widen the spacing between the letters, by around 10% of the point height.hort strings of words in capital letters appear bolder and louder than mixed case, and this is sometimes referred to as shouting. All caps can also be used to indicate that a given word is an acronym. Studies have been conducted on the readability and legibility of all caps text.