25 résultats pour "radius"
- LE RADIUS
- radius - Anatomie.
- radius (Biologie et Anatomie).
- LE RADIUS (2) I.
- LE RADIUS (5) I.
- Circle I INTRODUCTION Circle Terms Terms that apply to circles include the center, radius, diameter, secant, and tangent.
- LE RADIUS (3) I.
- LE RADIUS (4) I.
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- LE RADIUS Œ Ž I.
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anatomie fonctionnel cours
Terminaison : Base du métacarpe II (et III) Action : Flexion au niveau du poignet et il est pronateur de la main et abducteur Muscle FLECHISSEUR ULNAIRE du CARPE (cubital antérieur) Muscle superficiel, qui s'étend de l'humérus vers les carpes Origine : Epicondyle médiale de l'humérus + Ulna (Olécrâne, 2/3 supérieur de l'ulna, processus coronoïde) Terminaison : Sur le pisiforme (et parfois sur le métacarpe V) Action : Fléchissuer du poignet, adducteur du poignet Muscle BRACHIO RADIAL...
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Uranus (planet) - astronomy.
V COMPOSITION AND STRUCTURE A Interior of Uranus Uranus contains mostly rock and water, with hydrogen and helium (and trace amounts of methane) in its dense atmosphere. Astronomers believe that Uranus, likeNeptune, formed from the same material—principally frozen water and rock—that composes most of the planet’s moons. As the planet grew, pressures andtemperatures in the planet’s interior increased, heating the planet’s frozen water into a hot liquid. Uranus probably has a relatively small roc...
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Machine
I
INTRODUCTION
Machine, simple device that affects the force, or effort, needed to do a certain amount of work.
to decrease the amount of force needed to do work or to change the direction of the force. The wheel and axle and some levers can also be used to increase the speedof performance of a task, but doing so always increases the amount of force needed. A Inclined Plane NutsNuts are pieces of metal with a hole in the middle. They are screwed on the end of a bolt as a fastening. Nuts come invarying shapes, depending on their intended use.© Microsoft Corporation. All Rights Reserved. Ramps and staircas...
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Sun - astronomy.
A The Sun’s Place in the Milky Way The Milky Way Galaxy contains about 400 billion stars. All of these stars, and the gas and dust between them, are rotating about a galactic center. Stars that arefarther away from the center move at slower speeds and take longer to go around it. The Sun is located in the outer part of the galaxy, at a distance of 2.6 × 10 17 km (1.6 × 10 17 mi) from the center. The Sun, which is moving around the center at a velocity of 220 km/s (140 mi/s), takes 250 million y...
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Jupiter (planet) - astronomy.
Beneath the supercritical fluid zone, the pressure reaches 3 million Earth atmospheres. At this depth, the atoms collide so frequently and violently that the hydrogenatoms are ionized—that is, the negatively charged electrons are stripped away from the positively charged protons of the hydrogen nuclei. This ionization results in asea of electrically charged particles that resembles a liquid metal and gives rise to Jupiter’s magnetic field. This liquid metallic hydrogen zone is 30,000 to 40,000 k...
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Geometry
I
INTRODUCTION
Geometry, branch of mathematics that deals with shapes and sizes.
Conic sections, a commonly studied topic of geometry, are two-dimensional curves created by slicing a plane through a three-dimensional hollow cone. A Euclid’s Postulates Euclid, who lived about 300 BC, realized that only a small number of postulates underlay the various geometric theorems known at the time. He determined that these theorems could be deduced from just five postulates. 1. A straight line may be drawn through any two given points. 2. A straight line may be drawn infinitely or be...
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Anatomie : le poignet.
III) Articulation du poignet. Le poignet comporte deux articulations : l’articulation radio-ulnaire distale et l’articulation radio-carpienne. A) L’articulation radio ulnaire distale. 1. Surfaces articulaires. a. La tête de l’ulna Elle comporte deux segments : - un segment latéral, vertical en forme de cylindre, articulaire avec l’incisure ulnaire du radius. - Un segment inférieur, répondant au ligament triangulaire du poignet. b. L’incisure ulnaire du radius Située à la partie inférieure...
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L'avant-bras
2 II. Ostéologie. A. L'ulna. 1. Extrémité supérieure ou proximale (cf. le cours précédent) 2. Le corps de l'ulna ou diaphyse Dans le plan frontal, il dessine un "S italique", convexe latéralement dans sa partie proximale, concave latéralement dans sa partie distale. Il est triangulaire à sa partie supérieure et arrondie à sa partie distale. On lui décrit trois bords et trois faces a. Les bords a.1 Le bord latéral Il est situé en regard du radius,( regarde latéralement le radius) et...
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Supernova - astronomy.
The term hypernova has been proposed for an extremely massive core-collapse supernova—possibly more than 100 times the mass of the Sun. A hypernova is thought to form a black hole. Just before it explodes, a hypernova may release a huge burst of gamma rays in a jet from the rotating black hole at its center. These jets mayexplain the so-called long gamma-ray bursts detected by astronomers. According to some researchers, massive stars with over 40 solar masses may sometimescollapse directly int...
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Atom
I
INTRODUCTION
Water Molecule
A water molecule consists of an oxygen atom and two hydrogen atoms, which are attached at an angle of 105°.
spontaneously break apart and change, or decay, into other atoms. Unlike electrons, which are fundamental particles, protons and neutrons are made up of other, smaller particles called quarks. Physicists know of six different quarks.Neutrons and protons are made up of up quarks and down quarks —two of the six different kinds of quarks. The fanciful names of quarks have nothing to do with their properties; the names are simply labels to distinguish one quark from another. Quarks are unique amo...
- LES ARTICULATIONS RADIO-ULNAIRES
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L’ARTICULATION DU POIGNET
2/2 www.mediprepa.com Les ligaments collatéraux permettent des mouvements de grande amplitude. Les ligaments radio-ulnaire court et radio-luno-triquétral sont obliques en bas et en dedans. Cela évite que le carpe ne glisse en haut et en dedans; en effet, la surface carpienne est dirigée en haut et en dedans, à raison de 22°. L’extrémité distale du radius regarde en bas, en dedans et en avant (d’environ 12°). Le carpe a donc tendance à glisser vers l’avant. A la face...
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LE COUDE
2/2 www.mediprepa.com B. Extension. L’extension est d’une amplitude de 0°. Parfois chez les femmes et les enfants, elle peut avoir une amplitude de 10° maximale. Elle est limitée par : - les butées osseuses - la capsule antérieure. IV. LES PRINCIPAUX MUSCLES. • Flexion : - le muscle brachial antérieur : toujours actif, il est innervé par le nerf musculo-cutané - le muscle biceps brachial : participe à la supi...
- Définition du terme: CUBITUS, substantif masculin.
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Définition du terme:
CUBITO-, élément préfixe.
1845 et DICTIONNAIRE DES DICTIONNAIRES (SOUS LA DIRECTION DE PAUL GUÉRIN) 1892 cubito-pronateur, -trice, adjectif. " Qui appartient, qui se rapporte à l'articulation du coude, au cubitus et au muscle cubital pronateur ". Réflexe cubito-pronateur (Encyclopédie médicale Dictionnaire encyclopédique Quillet - Nouvelle encyclopédie pratique de médecine et d'hygiène (SOUS LA DIRECTION DE MAURICE GAUCHER), 1965) cubito-radial, -ale, -aux, adjectif. " Qui appartient, qui se rapporte au cubitus et au rad...
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Saturn - astronomy.
measurements of the magnetic field made by the Voyager space probes in the 1980s. Additional Cassini findings reported in March 2007 suggested that particles originating from geysers on the moon Enceladus may provide a partial explanation for thechange. The neutral gas particles become electrically charged and are captured by Saturn’s magnetic field, forming a disk of hot, ionized gas around the planet’sequator. The charged particles interact with the magnetic field and slow down the rotation of...