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Tomography, X-Ray
|
D014056 |
[Tomography using x-ray transmission.
] |
|
Tomography, X-Ray Computed
|
D014057 |
[X-ray computed tomography in which the X-RAY beam is generated by irradiating a TUNGSTEN target ring with a stream of ELECTRONS that is moved across the target electronically rather than mechanically.
, Tomography using x-ray transmission and a computer algorithm to reconstruct the image.
] |
|
Tonga
|
D014058 |
[An archipelago in Polynesia in the southwest Pacific Ocean, comprising about 150 islands. It is a kingdom whose capital is Nukualofa. It was discovered by the Dutch in 1616, visited by Tasman in 1643, and by Captain Cook in 1773 and 1777. The modern kingdom was established during the reign of King George Tupou I, 1845-93. It became a British protectorate in 1900 and gained independence in 1970. The name Tonga may be of local origin, meaning either island or holy. Its other name, Friendly Islands, was given by Captain Cook from the welcome given him by the natives. (From Webster's New Geographical Dictionary, 1988, p1219 & Room, Brewer's Dictionary of Names, 1992, p549)
] |
|
Tongue
|
D014059 |
[A muscular organ in the mouth that is covered with pink tissue called mucosa, tiny bumps called papillae, and thousands of taste buds. The tongue is anchored to the mouth and is vital for chewing, swallowing, and for speech.
] |
|
Tongue Diseases
|
D014060 |
[Diseases involving the TONGUE.
] |
|
Tongue Habits
|
D014061 |
[Acquired responses regularly manifested by tongue movement or positioning.
] |
|
Tongue Neoplasms
|
D014062 |
[Tumors or cancer of the TONGUE.
] |
|
Tongue, Fissured
|
D014063 |
[The occurrence of of breaks or slits in the tissue of the dorsal surface of the TONGUE.
] |
|
Tongue, Hairy
|
D014064 |
[A benign condition of the tongue characterized by hypertrophy of the filiform papillae that give the dorsum of the tongue a furry appearance. The color of the elongated papillae varies from yellowish white to brown or black, depending upon staining by substances such as tobacco, food, or drugs. (Dorland, 27th ed)
] |
|
Tonic Pupil
|
D015845 |
[A pupillary abnormality characterized by a poor pupillary light reaction, reduced accommodation, iris sector palsies, an enhanced pupillary response to near effort that results in a prolonged, "tonic" constriction, and slow pupillary redilation. This condition is associated with injury to the postganglionic parasympathetic innervation to the pupil. (From Miller et al., Clinical Neuro-Ophthalmology, 4th ed, pp492-500)
] |
|
Tonometry, Ocular
|
D014065 |
[Measurement of ocular tension (INTRAOCULAR PRESSURE) with a tonometer. (Cline, et al., Dictionary of Visual Science, 4th ed)
] |
|
Tonsillar Neoplasms
|
D014067 |
[Tumors or cancer of the PALATINE TONSIL.
] |
|
Tonsillectomy
|
D014068 |
[Surgical removal of a tonsil or tonsils. (Dorland, 28th ed)
] |
|
Tonsillitis
|
D014069 |
[Inflammation of the tonsils, especially the PALATINE TONSILS but the ADENOIDS (pharyngeal tonsils) and lingual tonsils may also be involved. Tonsillitis usually is caused by bacterial infection. Tonsillitis may be acute, chronic, or recurrent.
] |
|
Tool Use Behavior
|
D053001 |
[Modifying, carrying, or manipulating an item external to itself by an animal, before using it to effect a change on the environment or itself (from Beck, Animal Tool Behavior, 1980).
] |
|
Toona
|
D000082982 |
[A plant genus of the family MELIACEAE. Several members were formerly classified under CEDRELA (e.g., Toona sinensis formerly Cedrela sinensis) and produces various LIMONOIDS (e.g., toonins).
] |
|
Tooth
|
D014070 |
[One of a set of bone-like structures in the mouth used for biting and chewing.
] |
|
Tooth Abnormalities
|
D014071 |
[Congenital absence of or defects in structures of the teeth.
] |
|
Tooth Abrasion
|
D014072 |
[The pathologic wearing away of the tooth substance by brushing, bruxism, clenching, and other mechanical causes. It is differentiated from TOOTH ATTRITION in that this type of wearing away is the result of tooth-to-tooth contact, as in mastication, occurring only on the occlusal, incisal, and proximal surfaces. It differs also from TOOTH EROSION, the progressive loss of the hard substance of a tooth by chemical processes not involving bacterial action. (From Jablonski, Dictionary of Dentistry, 1992, p2)
] |
|
Tooth Ankylosis
|
D020254 |
[Solid fixation of a tooth resulting from fusion of the cementum and alveolar bone, with obliteration of the periodontal ligament. It is uncommon in the deciduous dentition and very rare in permanent teeth. (Jablonski's Dictionary of Dentistry, 1992)
] |
