The tongue is a muscular organ in the mouthof a typical vertebrate. It manipulates food for mastication and swallowing as part of the digestive process, and is the primary organ of taste. The tongue's upper surface (dorsum) is covered by taste buds housed in numerous lingual papillae. It is sensitive and kept moist by saliva and is richly supplied with nervesand blood vessels. The tongue also serves as a natural means of cleaning the teeth.[2] A major function of the tongue is the enabling of speech in humans and vocalization in other animals.The human tongue is divided into three parts, an oral part at the front and a pharyngeal part at the back. The left and right sides are also separated along most of its length by a vertical section of fibrous tissue (the lingual septum) that results in a groove, the median sulcus, on the tongue's surface.There are two groups of muscles of the tongue. The four intrinsic muscles alter the shape of the tongue and are not attached to bone. The four paired extrinsic muscles change the position of the tongue and are anchored to bone.

A tongue crib is a metal device on the roof of your mouth that trains your tongue to not touch your teeth if your a "tongue thruster". When you tongue thrust your tongue pushes on your teeth, pushing them forward therefore making your top jaw push out and create an overbite. Sources:I am a tongue thruster and I have a tongue crib.

Four taste sensations:

bitter (back of the tongue)

sweet (tip of the tongue)

salty (tip of the tongue)

sour (sides of the tongue)

Tongue + Barbell = Tongue Piercing Tongue piercing: a piercing in the center of the tongue located approximately 3/4" from the tip of the tongue through the connective tissue joining the two muscle groups that form the tongue. Used as a means of self expression or a personal statement, some times used to enhance sexual pleasure for either gender.

Yes.