Mouth (human)
From Wikipedia, the free encyclopedia
| Mouth (human) | |
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| Head and neck. | |
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| A human mouth. | |
| Latin | cavitas oris |
| MeSH | Oral+cavity |
| Dorlands/Elsevier | c_16/12220513 |
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.
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[edit] Function
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.
[edit] Cultural aspects
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.
[edit] Development
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.
[edit] See also
[edit] Additional images
 Sagittal section of nose mouth, pharynx, and larynx. |
[edit] External links
HEAD: Skull - Forehead – Eye – Ear – Nose – Mouth – Tongue – Teeth – Jaw – Face – Cheek – Chin
NECK: Throat – Adam's apple - Larynx
TORSO: Shoulders – Spine – Chest – Breast – Ribcage – Abdomen – Belly button
LIMBS: Arm – Elbow – Forearm – Wrist – Hand – Finger (Thumb/Index/Middle/Ring/Little) – Leg – Lap – Thigh – Knee – Calf – Heel – Ankle – Foot – Toe (Hallux)
| Anatomy of torso, digestive system: Gastrointestinal tract |
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| Upper gastrointestinal tract Mouth • Pharynx (nasopharynx, oropharynx, hypopharynx) • Esophagus • Crop • Stomach (rugae, gastric pits, cardia/gland, fundus/gland, pylorus/gland, pyloric antrum) Lower gastrointestinal tract Large intestine: Cecum • Colon (ascending colon, transverse colon, descending colon, sigmoid colon) • Rectum (Houston valve, rectal ampulla, pectinate line) • Anal canal (anal valves, anal sinuses, anal columns) Anus: Sphincter ani internus muscle • Sphincter ani externus muscle GALT: Peyer's patches • M cells intestinal villus • crypts of Lieberkühn • circular folds • taenia coli • haustra • epiploic appendix |
Dentofacial Anomalies: Malocclusion - Micrognathism - Prognathism - Retrognathism - Temporomandibular joint disorder
Developmental Anomalies: Amelogenesis imperfecta - Anodontia - Concrescence - Dens evaginatus - Dens invaginatus - Dentin dysplasia -
Dentinogenesis imperfecta - Dilaceration - Enamel pearl - Fusion - Gemination - Hyperdontia - Macrodontia - Microdontia - Regional odontodysplasia -
Talon cusp - Taurodontism - Turner's hypoplasia
Hard, Soft and Periapical Tissues: Attrition - Abrasion - Ankylosis - Dental caries - Denticles - Erosion - External resorption - Fluorosis - Gingivitis - Hypercementosis - Impaction - Internal resorption - Periodontitis - Pulpitis - Pulp stones - Ulcer
Maxillomandibular Anomalies: Ameloblastoma - Odontogenic keratocyst - Torus mandibularis - Torus palatinus
Lip and Oral Mucosa: Angular cheilitis - Erythroplakia - Hairy leukoplakia - Leukoplakia
Salivary Glands: Drooling - Benign lymphoepithelial lesion - Frey's syndrome - Mikulicz's disease - Mucus retention cyst - Mumps -
Necrotizing sialometaplasia - Ranula - Sialadenitis - Sialolithiasis - Sjogren's syndrome - Stomatitis - Xerostomia
Tongue: Geographic tongue - Fissured tongue - Glossitis - Glossodynia
