Human mouth

Source: Wikipedia, the free encyclopedia.
Human mouth
Photograph of the closed mouth of a male
Head and neck
Details
Identifiers
Latinos, oris[1]
TA98A01.1.00.010
TA2119
Anatomical terminology

In

alimentary canal that receives food and produces saliva.[2] The oral mucosa is the mucous membrane epithelium
lining the inside of the mouth.

In addition to its primary role as the beginning of the

jaw are also needed to produce the range of sounds included in speech
.

The mouth consists of two regions, the vestibule and the oral cavity proper. The mouth, normally moist, is lined with a

teeth. The lips mark the transition from mucous membrane to skin, which covers most of the body
.

Structure

Oral cavity

Anatomy of the mouth.
sublingual fold

The mouth consists of two regions: the vestibule and the oral cavity proper. The vestibule is the area between the teeth, lips and cheeks.

circumvallate papillae of the tongue inferiorly, and the retromolar trigone
.

Lips

A closed human mouth.

The

Prader–Willi syndrome.[4]

Nerve supply

The teeth and the

facial (labial) aspect of the maxillary incisors, canines and premolar teeth is innervated by the superior labial branches of the infraorbital nerve. The posterior superior alveolar nerve supplies the gingiva on the facial aspect of the maxillary molar teeth. The gingiva on the palatal aspect of the maxillary teeth is innervated by the greater palatine nerve apart from in the incisor region, where it is the nasopalatine nerve (long sphenopalatine nerve). The gingiva of the lingual aspect of the mandibular teeth is innervated by the sublingual nerve, a branch of the lingual nerve. The gingiva on the facial aspect of the mandibular incisors and canines is innervated by the mental nerve, the continuation of the inferior alveolar nerve emerging from the mental foramen. The gingiva of the buccal (cheek) aspect of the mandibular molar teeth is innervated by the buccal nerve (long buccal nerve).[7]

Development

The

cleft palate
, or both can result.

The nasolabial folds are the deep creases of tissue that extend from the nose to the sides of the mouth. One of the first signs of age on the human face is the increase in prominence of the nasolabial folds.

Function

The mouth plays an important role in eating, drinking, and speaking. Mouth breathing refers to the act of breathing through the mouth (as a temporary backup system) if there is an obstruction to breathing through the nose, which is the designated breathing organ for the human body.[8]

Infants are born with a sucking reflex, by which they instinctively know to suck for nourishment using their lips and jaw. The mouth also helps in chewing and biting food.

For some disabled people, especially many disabled artists, who through illness, accident or congenital disability have lost dexterity, their mouths take the place of their hands, when typing, texting, writing, making drawings, paintings and other works of art by maneuvering brushes and other tools, in addition to the basic oral functions. Mouth painters hold the brush in their mouth or between their teeth and maneuver it with their tongue and cheek muscles, but mouth painting can be strenuous for neck and jaw muscles since the head has to perform the same back and forth movement as a hand does when painting.[9][10]

A male mouth can hold, on average, 71.2 ml (2.51 imp fl oz; 2.41 US fl oz), while a female mouth holds 55.4 ml (1.95 imp fl oz; 1.87 US fl oz).[11]

See also

Further reading

  • Nestor, James (2020). .

References

External links

  • Media related to Human mouths at Wikimedia Commons
  • Quotations related to Mouths at Wikiquote