Annulus Compare And Contrast

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The annulus is composed of concentric rings of collagen fibers that is called lamellae and arranged in a highly ordered pattern. The lamellae are made up of 15 to 25 layers that are present in the annulus and surround the central nucleus pulposus. The annulus is made up of strong fibrocartilage, which is made of collagen type I and II. The collagen fibers in each lamellae are arranged alternately and intersect with each other (right/left hand alignment). The lamellae are thicker in the lateral and anterior portions of the disc and thin posteriorly. Annulus fibrosus lamellae are made of long collagen fibers that are laying parallel to made fibrous multi-layer composites with differently oriented orthotropic layers. The outermost layer is composed
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