Illustrator At times arrows

I need several illustrations for a book about movement and exercise. There may be a few anatomical drawings needed, but most of them will be images of someone standing or lying down executing stages of a movement sequence. At times arrows will be used to indicate the direction of the motion. Some of the drawings in the sequence will delineate slight modifications during the sequence. The person performing the movement need only be a simple line drawing with basic shading at times to make it clear the angle or direction of the limb or body part.