I am creating multiple TikZ pictures within one document and would like to set the default style of arrow heads for all the pictures to the latex style, i.e. like -latex does, so that I don't have to do this every time I draw an arrow.
I'm new to TikZ, but have searched and must not be choosing the correct terms.

tikz-cd, then you also need to add\tikzcdset{arrow style=tikz}for these defaults to be applied in its diagrams. – Peter LeFanu Lumsdaine Nov 04 '16 at 13:23