Intervertebral Disc Vector Art Icons and Graphics for Free Download Biology Diagrams The intervertebral disc (IVD) is important in the normal functioning of the spine. It is a cushion of fibrocartilage and the principal joint between two vertebrae in the spinal column. There are 23 discs in the human spine: 6 in the cervical region (neck), 12 in the thoracic region (middle back), and 5 in the lumbar region (lower back). If the disc is damaged or degenerates, it can lead to pain, stiffness, and other spinal problems. Structure. The intervertebral disc is composed of two main parts: the annulus fibrosus and the nucleus pulposus. Annulus fibrosus: This is the outer layer of the intervertebral disc, made up of tough, fibrous cartilage. The annulus fibrosus Intervertebral discs consist of an outer fibrous ring, the anulus (or annulus) fibrosus disci intervertebralis, which surrounds an inner gel-like center, the nucleus pulposus. [1]The anulus fibrosus consists of several layers (laminae) of fibrocartilage made up of both type I and type II collagen.Type I is concentrated toward the edge of the ring, where it provides greater strength.
What is an Intervertebral Disc? An intervertebral disc acts as a cushion and spacer between the vertebrae, absorbing shock and allowing flexibility in the spine. Each disc is predominantly composed of two key components: 1. Annulus Fibrosus โข The annulus fibrosus is the tough, outer ring of the disc.
Anatomy and Biomechanics of the Intervertebral Disc Biology Diagrams
ANATOMY Normal Disc. The intervertebral disc is a heterogeneous multicomponent structure occupying approximately 25-33% (Fig. 1-1) of the spinal column's length. 4,5,7 In the vertical position, the disc confers the form of a wedge, causing the convex curvature of the lumbar spine (lordosis).
Intervertebral discs are fibrocartilaginous structures located between the bodies of adjacent vertebrae.They form a fibrocartilaginous joint between the vertebral bodies, linking them together. Collectively, the discs contribute up to one-third of the length of the vertebral column, forming an interpose between adjacent vertebrae from the axis (C2) to the sacrum.
Intervertebral disc Biology Diagrams
Anatomy of the intervertebral disc, the biomechanical properties of the nucleus pulposus and the annulus fibrosus and their responses to a variety of mechanical forces acting on them are discussed. This provides a background for understanding how a healthy intervertebral disc responds to various stresses generated by different movements of the
