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Mouth (human)

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Mouth (human)
Illu01 head neck
Head and neck.
Latin cavitas oris
Gray's subject #
System
MeSH A01.456.505.631
Mouth
A human mouth, closed.

The human mouth (or oral cavity) is covered by an upper and lower lip.

The mouth starts digestion by physically chewing the food and breaking it down with saliva.

The average male mouth holds a volume of about 100mL.

FunctionEdit

They play an important role in speech (it is part of the vocal apparatus), facial expression, kissing, eating, drinking (especially with a straw), breathing, and smoking.

Infants are born with a sucking reflex, by which they instinctively know to suck for nourishment using their lips and jaw.

Cultural aspectsEdit

According to general etiquette, the mouth is kept closed, especially when chewing.

Lips are often adorned with lipstick or lip gloss although in most human cultures this is an affectation for females only.

DevelopmentEdit

The philtrum is the vertical groove in the upper lip, formed where the nasomedial and maxillary processes meet during embryo development. When these processes fail to fuse fully, a hare lip and/or cleft palate 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.

See alsoEdit


Additional imagesEdit

External linksEdit

Human anatomical features
Human body features

HEAD: ForeheadEyeEarNoseMouthTongueTeethJawFaceCheekChin

NECK: ThroatAdam's apple

TORSO: ShouldersSpineChestBreastRibcageAbdomenBelly button

Sex organs (Penis/Scrotum/Testicle or Clitoris/Vagina/Ovary/Uterus) – HipAnusButtocks

LIMBS: ArmElbowForearmWristHandFinger (Thumb - Index finger - Middle finger - Ring finger - Little finger) – LegLapThighKneeCalfHeelAnkleFootToe (Hallux)

SKIN: Hair

  1. REDIRECT Template:Digestive tract




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