As you age the following things take place in your skin: 1  The amount of collagen produced is diminished and the type of collagen changes from a more youthful type of collagen to an older type of collagen. The production of collagen never ends. 2  The Elastin in your skin decreases in content as well as production.
The definition of a synapse is the junction between two neurons or nerve cells where there is a small gap that neurotransmitters help nerve impulses to cross.
The word synapse â from the Greek synapsis (ÏÏÎ½Î¬ÏÏÎ¹Ï), meaning conjunction, in turn from ÏÏÎ½Î¬ÏÏÎµá½¶Î½ (ÏÏÎ½ (together) and á¼ÏÏÎµÎ¹Î½ (to fasten)) â was introduced in 1897 by English physiologist Michael Foster at the suggestion of English classical scholar Arthur Woollgar Verrall. In an electrical synapse, the presynaptic and postsynaptic cell membranes are connected by special channels called gap junctions that are capable of passing electric current, causing voltage changes in the presynaptic cell to induce voltage changes in the postsynaptic cell.