The palate () is the roof of the

mouth In animal anatomy, the mouth, also known as the oral cavity, or in Latin cavum oris, is the opening through which many animals take in food and issue vocal sounds. It is also the cavity lying at the upper end of the alimentary canal, bounded on ...

in humans and other

mammal Mammals () are a group of vertebrate animals constituting the class Mammalia (), characterized by the presence of mammary glands which in females produce milk for feeding (nursing) their young, a neocortex (a region of the brain), fur or ...

s. It separates the oral cavity from the nasal cavity. A similar structure is found in

crocodilian Crocodilia (or Crocodylia, both ) is an order of mostly large, predatory, semiaquatic reptiles, known as crocodilians. They first appeared 95 million years ago in the Late Cretaceous period ( Cenomanian stage) and are the closest living ...

s, but in most other tetrapods, the oral and nasal cavities are not truly separated. The palate is divided into two parts, the anterior, bony

hard palate The hard palate is a thin horizontal bony plate made up of two bones of the facial skeleton, located in the roof of the mouth. The bones are the palatine process of the maxilla and the horizontal plate of palatine bone. The hard palate spans ...

and the posterior, fleshy soft palate (or velum).

Structure

Innervation

The maxillary nerve branch of the trigeminal nerve supplies

sensory innervation Cutaneous innervation refers to the area of the skin which is supplied by a specific cutaneous nerve. Dermatomes are similar; however, a dermatome only specifies the area served by a spinal nerve. In some cases, the dermatome is less specific (wh ...

to the palate.

Development

The hard palate forms before birth.

Variation

If the fusion is incomplete, a cleft palate results.

Function

When functioning in conjunction with other parts of the mouth, the palate produces certain sounds, particularly velar, palatal, palatalized,

postalveolar Postalveolar or post-alveolar consonants are consonants articulated with the tongue near or touching the ''back'' of the alveolar ridge. Articulation is farther back in the mouth than the alveolar consonants, which are at the ridge itself, but no ...

alveolopalatal In phonetics, alveolo-palatal (or alveopalatal) consonants, sometimes synonymous with pre-palatal consonants, are intermediate in articulation between the coronal and dorsal consonants, or which have simultaneous alveolar and palatal articul ...

, and uvular consonants.

History

Etymology

The English

synonyms A synonym is a word, morpheme, or phrase that means exactly or nearly the same as another word, morpheme, or phrase in a given language. For example, in the English language, the words ''begin'', ''start'', ''commence'', and ''initiate'' are all ...

palate and palatum, and also the related adjective palatine (as in

palatine bone In anatomy, the palatine bones () are two irregular bones of the facial skeleton in many animal species, located above the uvula in the throat. Together with the maxillae, they comprise the hard palate. (''Palate'' is derived from the Latin ''pa ...

), are all from the Latin ''palatum'' via Old French ''palat'', words that like their English

derivatives The derivative of a function is the rate of change of the function's output relative to its input value. Derivative may also refer to: In mathematics and economics * Brzozowski derivative in the theory of formal languages * Formal derivative, an ...

, refer to the "roof" of the mouth. The Latin word ''palatum'' is of unknown (possibly

Etruscan __NOTOC__ Etruscan may refer to: Ancient civilization *The Etruscan language, an extinct language in ancient Italy *Something derived from or related to the Etruscan civilization **Etruscan architecture **Etruscan art **Etruscan cities **Etruscan ...

) ultimate origin and served also as a source to the Latin word meaning palace, ''

palatium The Palatine Hill (; la, Collis Palatium or Mons Palatinus; it, Palatino ), which relative to the seven hills of Rome is the centremost, is one of the most ancient parts of the city and has been called "the first nucleus of the Roman Empire." ...

'', from which other senses of palatine and the English word palace derive, and not the other way round. As the roof of the mouth was once considered the seat of the sense of taste, palate can also refer to this sense itself, as in the phrase "a discriminating palate". By further extension, the flavor of a food (particularly beer or wine) may be called its palate, as when a wine is said to have an oaky palate.

Bibliography

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References

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