atlas

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atlas

 [at´las]
the first cervical vertebra, the uppermost segment of the vertebral column, which supports the skull.
 Atlas. (A), (top) superior aspect; (bottom) transverse aspect. Note the absence of the body and spinous process. (B), position. From Dorland's, 2000.

at·las

(at'las), [TA]
First cervical vertebra, articulating with the occipital bone and rotating around the dens of the axis.
[G. Atlas, in Greek mythology, a Titan who supported the heavens on his shoulders]

atlas

/at·las/ (at´las) the first cervical vertebra.
Enlarge picture
Atlas. (A), (Top) superior aspect; (bottom) transverse aspect. Note the absence of the body and spinous process. (B), Position.

atlas

(ăt′ləs)
n. pl. at·lases
Anatomy The top or first cervical vertebra of the neck, which supports the skull.

atlas

Etymology: Gk, atlas, to bear, a mythical giant, compelled to uphold the world
the first cervical vertebra, articulating with the occipital bone and the axis.

ATLAS

Cardiology
(1) Assessment of Treatment with Lisinopril and Survival. A trial comparing the effects of high to low doses of Zestril®/lisinopril on morbidity and mortality (M&M) in patients with CHF.
 
Logistics
Randomised, double-blind, parallel-group; 3164 patients.
 
Conclusion
Combined risk of mortality and hospitalisation was 12% lower in the high-dose group.
 
(2) Acolysis during Treatment of Lesions Affecting Saphenous Vein Bypass Grafts. A trial evaluating the use of percutaneous CUT for managing thrombosed coronary SVGs.
 
Primary endpoint
Composite (minimum) lumen diameter <30%, TIMI-3 flow, 30-day freedom from MACE; was achieved in 54% of CUT patients vs 73% of abciximab patients.
 
Logistics
Randomised, controlled, multicentre; 191 patients (92 CUT, 89 abciximab followed by PCI).
 
Conclusion
CUT should not be used during PCI of thrombosed SVGs.

Oncology
Adjuvant Tamoxifen Longer Against Shorter. A trial that asked the optimal duration of adjuvant tamoxifen (a SERM) therapy in women with early breast CA.
 
Logistics
Randomised, international; 13752 enrolled.
 
Sports medicine
Athletes’ Training and Learning to Avoid Anabolic Steroids. A multi-component school-based program for male high school athletes (age 13 to 19), which capitalises on team-centred dynamics and uses positive peer pressure and role modelling to reduce the use of anabolic steroids, alcohol and other drugs.
 
Intervention
A highly scripted 10-session curriculum.
 
Results
New substance use and anabolic steroid use decreased by 50%; drinking and driving decreased by 25%; decreased use of drugs, alcohol and performance-enhancing agents; increased exercise and nutrition.

ATLAS

Cardiology A five-yr, randomized, double-blind trial–Assessment of Treatment with Lisinopril & Survival–which evaluated the effect of high vs low doses of Zestril®/lisinopril on M&M in Pts with CHF; high doses appear to be effective. See Lisinopril Sports medicine A 5-yr controlled trial–Athletes' Training and Learning to Avoid Anabolic Steroids begun in 1993 and funded by the National Institute of Drug Abuse. See Anabolic steroids.

at·las

(at'lăs) [TA]
First cervical vertebra, articulating with the occipital bone and rotating around the dens of the axis.
Synonym(s): vertebra C1.
[G. Atlas, in Greek mythology, a Titan who supported the heavens on his shoulders]

atlas

See ATLAS BONE.

atlas

the first vertebra of TETRAPODS, linking skull and axis.

atlas,

n C1, the first cervical vertebra. The skull sits upon this vertebra, which allows the head to tilt forward and backward. The atlas rests on the axis, allowing for rotation. See also axis.
Enlarge picture
Atlas.

at·las

(at'lăs) [TA]
First cervical vertebra, articulating with the occipital bone and rotating around the dens of the axis.
[G. Atlas, in Greek mythology, a Titan who supported the heavens on his shoulders]

atlas,

n the first cervical vertebra articulating superiorly with the occipital bone and inferiorly with the axis (second cervical vertebra).

atlas

the first cervical vertebra, the uppermost segment of the backbone which supports the skull, characterized by the absence of a body and a wide vertebral canal.
References in periodicals archive ?
He reports on the supposed discovery of Atlantean ceramic "sound discs" whereby "if one struck a disc on the correct pitch or note, the individual striker could rise in the air and fly" (77).
The Atlantean houses have been understood by many critics to represent Bacon's vision for an English academy or society of science, which is all the more reason to note the peculiar way in which each of these houses produces imitations and amplifications of natural objects and phenomena with the express purpose of disorientation or deception.
Linguistics expert Marc Okrand, who dreamed up Vulcan and Klingon languages for the sci-fi series Star Trek, was brought in to create an Atlantean tongue.
The Mound-builders, according to Donnelly, were offshoots of Atlantean colonies in Mexico.
To be fair, the price includes access to on-site attractions like tanks of live sharks, jellyfish and stingrays; an exhibit of props and sketches from the film; and Atlantean Lazertag, in which kids blast away at each other in a glow-in-the-dark maze.
Fox) gets a guided tour of the ancient world from Atlantean Princess Kida, voiced by Cree Summer.
Consistent with Huguenin's telling of the Atlantean saga, Siegmeister adopted the same alternative account of ancient history and customized it to be more directly applicable to the New California venture.
Or, worse, here come the blissed-out New-Agers with their past-lives and hotlines to Atlantean beings with too many vowels in their names, visualizing world peace.
She is excellent on the tension in Bacon between veiling and revelation, on his providential history and vision of human empire, and on the relevance of his recent disgrace to New Atlantean politics.
Ruins, chambers and underwater corridors will summon the curious and reveal, perhaps, the stolen moments of Atlantean life.
Wells and Ursula Le Guin, and to forget entirely about such films as Warlords of Atlantis, in which Cyd Charisse starred as Atsil, Queen of an Atlantean master race who saucered in from Mars and would have evolved into Nazis if they hadn't been attacked first by pre-Spielbergian velociraptors.
This ripening underwater investment poses the question of who owns the artificial Atlantean domains: the utilities, the states, or the federal government?