Stop

Anatomy

stop is the opening through which one (when that it is not question of a human being, the word is too mouth) between its food. This is usually located at the level of head, but not always. The mouth of one planaria, for example, is in the medium of its belly.

The majority of the animals have one digestive system complete, with a mouth with an end and one with the other. According to the end which is formed in first in , one can classify the animals in protostomiens and deutérostomiens.

Some animals, like Cnidaires and them planaria do not have anuses. They excrètent their waste by the mouth, or like brachiopods, which has a very effective digestive system, roll up it around their until it is finished.

Some animals, like cestodes, do not even have a mouth. They live inside the digestive sytème of their host and thus do not need to have one of them.

In many animals, the mouth has ( to chew food or to inject poison. Moreover, it is often equipped with one ) which is used for the chewing, phonation and swallowing. At , there are modified external members; at gnathostomes, they are internal.

The structures corneas covering the mouth of a bird make sound nozzle.

The human mouth is covered by lips higher and lower. They play an important part in word, itfacial expression, the action ofto embrace, of , to practise it oral sex and of to smoke.

The babies are born with a reflex from suction.

stomatology is the medicine of the diseases of the mouth in particular (moulds).

The nasal sigmatism is due to a positioning of the language which makes impossible it by the oral cavity.

Others

As it is a part of the particularly sensitive and wet body, it is often the seat of with electricity, known as gegene.

See too

• (intubation)

External bonds

• See a diagram detailed on the oral cavity

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