Look at the Nmos here in the schematic ...
There are two modes of action with a Mosfet (apart from OFF when no little gate bar is seen).
The two modes are.....
1) switching mode, e.g. for fully on, just like when you turn on your TV etc.
2) amplification mode, e.g. for following your voice pattern through a microphone etc.
The switching mode is called the Ohmic region (also called the Triode region).
The amplification mode is called the Saturation region.
The two regions are clearly defined and the answer here on EC is incredibly easy once you know what to look for.
Putting a Mosfet in the correct region for the task in your schematics is a good first step.
Now..... Is the Mosfet here in Ohmic, or is it in Saturation?
First correct reply gets a brownie point !
Page 2 here: http://everycircuit.com/circuit/5338883035496448
