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.
Synapse: Meeting Point Between Neurons. Since neurons form a network of electrical activities, they somehow have to be interconnected. When a nerve signal, or impulse, reaches the ends of its axon, it has traveled as an action potential, or a pulse of electricity.