The phrase "the appropriate direction" is correct and usable in written English.
You can use it to describe the course of action that is best suited for a particular situation. For example: "The board had to make a decision on what direction to take for the project, so they consulted with the experts who suggested the appropriate direction."
The sequence composition of the chromosome imparts directional cues to FtsK to ensure that DNA is pumped in the appropriate direction (Bigot et al, 2005, 2007; Lesterlin et al, 2008), and the Ter sites ensure that dif remains in the last replicating region of the chromosome (Duggin et al, 2008b).
I set off in the appropriate direction, plodding past one door after another.
This is the ideal requirement for a neural scaffold to guide cells in the appropriate direction.
Thus heat will flow in the appropriate direction, as shown by the two arrows in the heat exchangers.
Even inside a cage, without visual cues, the birds typically orient themselves using their internal compasses and scratch in the appropriate direction of migration.
These findings demonstrate the effectiveness of vibrotactile cues in helping drivers to orient their spatial attention in the appropriate direction.
If the relative angle was calculated to be anything other than zero, the PID algorithm turned the car in the appropriate direction.
When the buttons were held down, hour or minute was continuously modified in the appropriate direction to make the faster interface.
If we move the mouse to the left or right and then click, the car will drive in the appropriate direction.
Each router looks at the packet of data and sends it on in the appropriate direction; the average data packet hops 18 times as it makes its way across the Internet.
To construct the intricate network of connections that supports the functions of an adult nervous system, neurons must form highly elaborate processes, extending in the appropriate direction across long distances to form synapses with their partners.
