Kiss

A kiss (from Old English cyssan "to kiss", in turn from coss "a kiss", perhaps onomatopoeic) is the touching of the lips to some other thing; usually another person.

The anatomy of kissing

Kissing is a complex behaviour that requires significant coordination. The most important muscle involved is the orbicularis oris muscle; it is used to pucker the lips and informally known as the kissing muscle.

Related Topics:
Muscle - Orbicularis oris muscle - Lip

~ ~ ~ ~ ~ ~ ~ ~ ~ ~