muscles used for smiling

How Many Muscles Does It Take to Smile? HowStuffWorks. Web  However, if the smile is further reduced to a robotic expression of just raising the corners of the mouth, then it takes only two.

How Many Muscles Does It Take to Smile? HowStuffWorks
How Many Muscles Does It Take to Smile? HowStuffWorks from www.ronitbaras.com

Web  The muscles are all tied to one nerve, called the facial nerve. Branches or nerve bundles split off from the main nerve and work.