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.
A synapse is a complex membrane junction or gap (the actual gap, also known as the synaptic cleft, is of the order of 20 nanometres, or 20 millionths of a millimetre) used to transmit signals between cells, and this transfer is therefore known as a synaptic connection.