Ethan is just 2 weeks old. his mother strokes his cheek and he turns toward the touch and opens his mouth. this is called the reflex.

This is an example of the rooting reflex.  The rooting reflex is when a baby moves their mouth toward a stimulus and starts the sucking or rooting motions with it's mouth.  The stimulus can be a finger on the lips or a nipple.  The rooting reflex helps to ensure successful feeding of the infant.