(redirected from floor of mouth)
Also found in: Dictionary, Thesaurus, Medical, Legal, Acronyms.


entrance to the digestive and respiratory tracts. The mouth, or oral cavity, is ordinarily a simple opening in lower animals; in vertebrates it is a more complex structure. In humans, the mouth is defined in front and at the sides by the lips, jawbone, teethteeth,
hard, calcified structures embedded in the bone of the jaws of vertebrates that perform the primary function of mastication. Humans and most other mammals have a temporary set of teeth, the deciduous, or milk, teeth; in humans, they usually erupt between the 6th and 24th
..... Click the link for more information.
, and gums; in the rear it merges with the throat. The roof of the mouth is composed of the hard and soft palatespalate
, roof of the mouth. The front part, known as the hard palate, formed by the upper maxillary bones and the palatine bones, separates the mouth from the nasal cavity. It is composed of a bone plate covered with a layer of mucous membrane tissue.
..... Click the link for more information.
 and the floor of the mouth is formed by the tonguetongue,
muscular organ occupying the floor of the mouth in vertebrates. In some animals, such as lizards, anteaters, and frogs, it serves a food-gathering function. In humans, the tongue functions principally in chewing, swallowing, and speaking.
..... Click the link for more information.
, a muscular structure that contains the organs of taste (taste buds). The lips, palates, tongue, and teeth are the major components in speech formation, using the "raw sound" formed in the larynxlarynx
, organ of voice in mammals. Commonly known as the voice box, the larynx is a tubular chamber about 2 in. (5 cm) high, consisting of walls of cartilage bound by ligaments and membranes, and moved by muscles. The human larynx extends from the trachea, or windpipe.
..... Click the link for more information.
. The process of digestion begins in the mouth; the chewing and grinding action of the teeth reduces the food to a readily digestible substance. The enzymatic process of converting starch to sugar is initiated by salivary amylase (ptyalin) excreted by the three salivary glandssalivary glands
, in humans, three pairs of glands that secrete the alkaline digestive fluid, saliva, into the mouth. Most animals have salivary glands that resemble those in humans; however, in some animals these glands perform other functions.
..... Click the link for more information.
 located at the angle of the jawbone and under the tongue. Saliva produced in these glands moistens food, preparing it for processing in the digestive systemdigestive system,
in the animal kingdom, a group of organs functioning in digestion and assimilation of food and elimination of wastes. Virtually all animals have a digestive system. In the vertebrates (phylum Chordata, subphylum Vertebrata) the digestive system is very complex.
..... Click the link for more information.



the part of a river that empties into a sea, lake, or another river. In rivers that dry out in their lower course, the place where the river terminates is designated the mouth.

Several types of mouth are distinguished. A simple mouth refers to the terminus of a river that does not divide into branches, such as the Tiber. Rivers may also terminate in deltas, as in the Nile; estuaries, as in the Thames; or limans, as in the Iuzhnyi Bug. A river may end in a discordant junction, which is characteristic of the tributaries of mountain rivers in which downcutting has been less intensive than in the principal river. If a river does not transport its waters to a sea, lake, or another river, it is sometimes said to terminate in a blind end.

Most large rivers that empty into a sea or large lake contain bars at the mouth; farther upriver are deep reaches that provide the customary wintering places for fish, such as the fish preserve pools in the Volga delta. The hydrological regime of river mouths is characterized by a complex variation in flow velocities, caused by such factors as ebb and flow, surge, increased flow rate during high water (ocean and lake rivers), and ice jams formed by drifting ice.

What does it mean when you dream about a mouth?

A big mouth indicates gossip and the spreading of lies, or perhaps spoken words of goodness and truth. Romantic or sexual urges are associated with this symbol, too.


The oral or buccal cavity and its related structures.
(engineering acoustics)
The end of a horn that has the larger cross-sectional area.
The place where one body of water discharges into another. Also known as influx.
The entrance or exit of a geomorphic feature, such as of a cave or valley.
(mining engineering)
The end of a shaft, adit, drift, entry, or tunnel emerging at the surface.
The collar of a borehole.
(science and technology)
Something resembling a mouth, that is, a place where one thing enters another or an opening at the receiving end of a container or enclosure.


1. the opening through which many animals take in food and issue vocal sounds
2. the system of organs surrounding this opening, including the lips, tongue, teeth, etc.
3. the visible part of the lips on the face
4. the point where a river issues into a sea or lake
5. the opening of a container, such as a jar
6. the opening of or place leading into a cave, tunnel, volcano, etc.
7. that part of the inner lip of a horse on which the bit acts, esp when specified as to sensitivity
8. Music the narrow slit in an organ pipe
9. the opening between the jaws of a vice or other gripping device
References in periodicals archive ?
Number of recurrences and TNM classification according to postoperative radiotherapy status in the entire study group (N = 110) Total (T, N, M) Tumor site RT Non-RT Tongue (n = 52) 5 (4, 1, 0) 9 (4, 4, 1) Floor of mouth (n = 47) 3 (1, 1, 1) 5 (2, 2, 1) Gums (n = 6) 0 1 (1, 0, 0) Retromolar space (n = 5) 0 0 Table 3.
Other tumors were of minor salivary gland origin including adenoid cystic carcinoma from the palate, mucoepidermoid carcinoma and adenocarcinoma from floor of mouth and buccal mucosa.
Floor of mouth in 3(2.4%) cases included pseudoepitheliomatous hyperplasia (1), ranula (1) and mucocele (1).
CECT Head & Neck: Evidence of large well defined multiloculated hypodense lesion measuring 4x4.5cm noted in submandibular region extending into the floor of mouth posteriorly up to base of tongue.
(2,5,6) However, the general features of this procedure remain unchanged: Orotracheal intubation is established first, and then the endotracheal tube (ETT) is brought through the floor of mouth so that it exits the skin of the submental region and will not interfere with the operative fields of the mouth and nose (1,2,5,6) Our present technique builds upon the experience of earlier authors and codifies a simple, reproducible method that can be readily incorporated into the practice of otolaryngologists treating maxillofacial trauma.
In severe forms, fibrosis of floor of mouth and tongue leads to impairment of speech and swallowing.
The most common sites of aspiration were tongue in 28 cases (31.9%), followed by buccal mucosa in 24 (27.3%), hard palate in 8 (9.1%), soft palate in 7 (7.9%), tonsil in 7 (7.9%), floor of mouth in 6 (6.9%), alveolus in 4(4.6%), retromolar trigone in 2(2.2%) and lip in 2(2.2%).
Although skeletal muscle commonly harbors the cysticerci, we report a case in which they had infested the mylohyoid muscle in the floor of mouth, a site that has not been mentioned previously in the literature.
These ICD-10 codes designated to the topographical site are C02.0 (Dorsal surface of tongue), C03.0 (upper gums/ alveolar mucosa), C03.1 (lower gums/ alveolar mucosa), C04 (floor of mouth), C00.4 (Inner aspect of mucosa of lower lip), C05.0 (hard palate) and C06.0 (buccal mucosa).
[2,3] There are various causative factors that have been attributed to pathogenesis of ranula but the most accepted one is that it is mainly due to the trauma-direct trauma or from surgery to the floor of mouth. [1,3,4] In this there is rupture of the excretory duct resulting in extravasation of mucous in surrounding tissue leading to formation of pseudo cyst.
Gradual hypertrophy of the muscles of floor of mouth is a common finding in most cases of aglossia, especially of the Mylohyoid muscle, possibly due to constant stimulation during swallowing.
In this patient, restricted mouth opening was contributed by muscular spasm due to pain, in addition to the edema of the floor of mouth. So after gas induction and propofol administration, spasm was relieved and direct laryngoscopic assessment could be done.