What is meant by functional unit of a system?
like when we say that the neuron is the basic unit of neural system do we mean that all those things that are performed by neural system can be performed by an isolated neuron
,if yes how? and if not, then why we call it as funtional unit of neural system?
Like we say hepatic lobule funtional unit of liver not hepatocytes because we say that liver has complex funtions and single hepatocytes cannot performe it so the funtional unit of liver is hepatic lobule .
Basically I am asking can a single neuron perform the most complex funtions of neural system,
like memory storage, control and coordination (to a smaller extent) regulation of a cell,
how can a single neuron control or regulate another cell, because wouldn't it need other neurons for processing of stimulus,
can an isolated neuron process any stimulus and make other cell to respond in some way,
if not so why we call it funtional unit of neural system?