labrum - sclerite forming the anterior closure of the mouth in arthropods, specifically, the free lobe overhanging the mouth (Glossary of PM) ...
labrum
A cuticular plate at the front of the insect head, forming an upper lip.
labrum The upper lip of insects and crustaceans situated above or in front of the mandibles; also refers to the outer lip of a gastropod shell.
The Glenoidal Labrum.
The Transverse Acetabular
The Articular Capsule (capsula articularis; capsular ligament) (Figs. 339, 340)."The articular capsule is strong and dense. Above, it is attached to the margin of the acetabulum 5 to 6 mm.
glenohumeral: coracohumeral - glenohumeral (superior, middle, and inferior) - transverse humeral - glenoid labrum
Elbow
proximal radioulnar, humeroradial, humeroulnar: ulnar collateral - radial collateral - annular - oblique cord
Forearm ...
mouthparts consisting of a labrum, a pair of mandibles, a pair of maxillae, a labium, and a tonguelike hypopharynx
two pairs of wings derived from outgrowths of the body wall
three pairs of walking legs ...
 See also: Human, Posterior, Trans, Class, Muscle
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