At a synapse, the plasma membrane of the signal-passing neuron (the presynaptic neuron) comes into close apposition with the membrane of the target (postsynaptic) cell.- Carl Philipp Emanuel Bach (Wikipedia)
Carl Philipp Emanuel Bach (8 March 1714 – 14 December 1788), also formerly spelled Karl Philipp Emmanuel Bach, and commonly abbreviated C. P. E. Bach, was a German Classical period composer and musician, the fifth child and second surviving son of Johann Sebastian Bach and Maria Barbara Bach.