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Its medial surface is nearly flat, whereas its lateral surface has a prominent scapular spine. Examine a mounted skeleton, and note that the apex of the scapula is directed ventrally. Identify the scapula’s anterior, dorsal, and posterior borders. The scapula forms the posterior (back) located part of the shoulder girdle. In humans, it is a flat bone, roughly triangular in shape, placed on a posterolateral aspect of the thoracic cage. Structure Surfaces Costal (Front, Ventral, Anterior) The costal or ventral surface [Fig.

Main surface of scapula

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At the lateral angle of the scapula the shallow, oval-shaped glenoid cavity articulates with the head of the humerus at the glenohumeral joint. MUSCLES The muscles of the scapular region (Figs 17.1 and 17.2) join the Middle (acromial) part: Lateral border of the acromion process of scapula. Posterior part : Lower lip of the crest of spine of scapula; Insertion: ‘V’ shaped deltoid tuberosity on anterolateral surface of humerus. Scapula, also called shoulder blade, either of two large bones of the shoulder girdle in vertebrates. In humans they are triangular and lie on the upper back between the levels of the second and eighth ribs.

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2019-12-08 · Serratus anterior – The serratus anterior can be characterized as an anterior, lateral, and posterior muscle. It is identifiable by its characteristic sawtooth appearance, with several visible and distinct segments attaching proximally to the upper eight or nine ribs and distally to the anterior medial surface of the scapula along its inferior border. Se hela listan på The scapula is at the back of the trunk you can quickly feel it if you bend your elbow and bring your hand to your upper back, that boney part sticking out is your scapula and covers the posterior surface of ribs two to seven. A significance of the scapula is that it is a connection point for several arm and shoulder muscles.

Main surface of scapula

PDF Juvenile specimen of Megaraptor Dinosauria

Main surface of scapula

Maya is one of the main packages used on such cutting-edge films, and has an NURBS, polygon, and subdivision surface modeling techniques are shown for  Elektromyografi (EMG) UNS, 01/31/2010, 252754006, surface electromyography (procedure) Hyperaldosteronism, Primary: Differential Diagnoses & Workup.

The main Cretaceous theropod dinosaur clades from South. America include dinal furrow is present on the caudomedial surface of humerus, as. that reported  Costa(e). • Scapula.
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The scapula provides attachment sites for many muscles including the pectoralis minor, coracobrachialis, serratus anterior, triceps brachii, biceps brachii, and the subscapularis.

Its main function is to lift the scapula. Origin: Transverse process of first four cervical vertebra 2013-02-12 · Continuing with our review of human anatomy, we move to the scapula or shoulder blade. The scapula attaches to the body through three articulations: the acromioclavicular joint - attaching the acromion process to the clavicle the scapulothoracic joint - muscular attachment of the scapula to the thorax glenohumeral joint - attaching the humerus to the… The scapula is a flat, triangular shaped bone, positioned on the posterior surface of the thoracic cage, spanning ribs 2-7.
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• Bröstben. • Revben (12 st) Bone Markings (Surface Features). General elevations  av TA GATES · 2007 · Citerat av 92 — Hadrosaurinae; it also possessed one of the largest geographical and stratigraphic distributions, spanning more than five million years surface of the nasal, resembling a gryphin, and the and partial jugal, left humerus, right and left scapu-. Recurrent anterior dislocation of the shoulder.