Back discs anatomy

William

Jun 20, 2025

10 min read

Anatomy, Back, Intervertebral Discs. The spine has several major roles in the body that include: protection of the spinal cord and branching spinal nerves, support for thorax and . They allow the spine to be flexible without sacrificing a great deal of strength. Spinal Cord and Cauda Equina of the Lumbar Spine.The lumbar spine comprises the lower end of the spinal column between the last thoracic vertebra (T12) and the first sacral vertebra (S1). While vertebrae develop around the notochord from the sclerotome (paired, condensed regions of mesenchymal cells), the intervertebral discs form, in part, from the notochord itself.Some of the potential home remedies for pain caused by a bulging disc in your lower back include: using hot and cold therapy with a heating pad or a cold . The lower back (where most back pain occurs) includes the five vertebrae in the lumbar region and supports much of the weight of the upper body. Symptoms depend on where the disk is sitting and whether the disk is .The spine’s four sections, from top to bottom, are the cervical (neck), thoracic (abdomen,) lumbar (lower back), and sacral (toward tailbone). The vertebral column extends from the skull to the coccyx and includes the cervical, thoracic, lumbar, and sacral regions.Auteur : Joshua A.The posterior longitudinal ligament is one of the three more important ligaments that contribute to stability in the spine. Anatomy of the . It is a structure around which axial development is oriented.The vertebral disc in the spine is an interesting and unique structure. There usually are 33 vertebrae in the spine, seven cervical, 12 thoracics, five lumbar, five fused sacral, and four fused coccyg . Intervertebral discs are present in the cervical, thoracic and lumbar regions, varying in shape and volume at different anatomical levels.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).Understanding Spinal Anatomy: Intervertebral Discs. They provide movements of the spine, stability to the trunk, as well as the coordination between the movements of the limbs and trunk.

Anatomy, Back, Intervertebral Discs

There are 23 discs in the human spine: 6 in the neck region, 12 in the middle back region, and 5 in the lower back region.

Back: Anatomy and function

This part of your anatomy is at risk of injury, .

Lumbar Anatomy

(A) flex the vertebral column.

The spinal cord ends at the top of the lumbar spine, and the remaining nerve roots, called the cauda equina, descend down the remainder of the spinal canal.

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Intervertebral discs: Anatomy and embryology

The spine is made up of individual bone segments (vertebra), ligaments, and discs. The discs throughout the . The deep back muscles, also called intrinsic or true back muscles, consist of four layers of .

Anatomy, Back, Lumbar Spine

The vertebral column (spine or backbone) is a curved structure composed of bony vertebrae that are interconnected by cartilaginous intervertebral discs. Each section is functionally different and is specialised for either weight-bearing, movement, protection and/or posture. The spinal cord . Author Information and .Anatomy, Back, Lumbar Vertebrae.Lumbar disk disease may occur when a disk in the low back area of the spine bulges or herniates from between the bony area of the spine. 0 seconds of 1 minute, 32 .The muscles of the lower back help stabilize, rotate, flex, and extend the spinal column, which is a bony tower of 24 vertebrae that gives the body structure and houses the spinal cord. (C) control flexion of the back. They provide shock absorption, flexibility, and support for the spinal column.

Intervertebral disc

Spinal Anatomy and Back Pain

The spinal cord runs through the center of the vertebral column . The vertebral column (spine) defines the animal subphylum Vertebra, or vertebrates, of the phylum Chordata. Which of the following is not a member of the minor deep layer of the back? (A) levatores costarum. It consists of multiple bones, the vertebrae, stacked on top of each other and separated by shock-absorbing intervertebral discs which provide flexibility to the vertebral column. They form a fibrocartilaginous joint between the vertebral .The back performs several important functions including housing and protecting the spinal cord, holding the body and head upright, bearing the weight of the . Waxenbaum; Vamsi Reddy; Caroline Williams; Bennett Futterman. The intervertebral discs lie between the vertebral bodies, linking them together.This website requires cookies, and the limited processing of your personal data in order to function. Furthermore, between each single . The muscles of the back are a group of strong, paired muscles that lie on the posterior aspect of the trunk.Intervertebral disc (IVD) degeneration is a major contributing factor for discogenic low back pain (LBP), causing a significant global disability. An intervertebral disc is a structure located between adjacent vertebrae of the spine. It helps to connect other bony structures. On gross morphology, the height of the discs in the lumbar region is the largest, measuring about 9–17 mm in adults.Despite having functionally different roles, the basic anatomy of each vertebra is very comparable throughout the entire spinal cord. Vertebrae, along with intervertebral discs, compose the vertebral column or spine. by Dave Harrison, MD • Last updated February 22, 2023.The back is found posteriorly and includes the vertebral column, the muscles that support the back and the spinal cord. It is part of .

Back anatomy: Diagram and overview

Most herniated disks occur in the lower back, but they also can occur in the neck. The vertebral disc in the spine is an interesting and unique structure.The notochord is an embryonic structure common to all vertebrates. The spinal cord in this region has protection from five durable and mobile vertebrae (L1-L5) that allow for the dispersion of axial forces.mycontentbreak Prior to adolescence, the spine consists of 33 bones because the sacrum’s five bones and the coccyx’s four do not fuse .Trapezius

Spinal Discs

Discs: Soft, cushion-like structures located between adjacent vertebrae.Spine & Intervertebral Disc Anatomy. (E) assist with elevation.Other structures in or around your lumbar spine are your intervertebral disks, spinal cord and nerves, muscles, tendons and ligaments. IVDs allow the spine to be . This ligament passes along the posterior aspect of the vertebral body inside the vertebral canal from the body of the axis to the sacrum.The intervertebral disc acts as a shock absorber and allows flexibility to the spine through a whole range of motions due to its unique structure. Adjacent vertebrae articulate through zygapophyseal joints between the respective superior and inferior facets of the vertebral articular .[1] The ligament is composed of longitudinal fibers that are denser than the . This review article describes anatomy, physiology, pathophysiology and treatment of intervertebral disc. The back muscles are divided into two large groups: The extrinsic (superficial) . Waxenbaum, Vamsi Reddy, Bennett Futterman

Anatomy of the back: Spine and back muscles

Despite having .

Anatomy, Back, Posterior Longitudinal Ligament

They act as tough ligaments that hold the vertebrae of the spine together. They also provide a shock-absorbing effect within the spine and prevent the vertebrae from grinding together.The intervertebral discs are approximately 7-10 mm thick and 4 cm in diameter (anterior – posterior plane) in the lumbar region of the spine. They consist of three major components: the inner .The erector spinae muscles.The inferior surface of the superior vertebral body articulates with the superior surface of the inferior vertebral body through intervertebral (IV) discs.

The vertebral column is divided into five regions and .The lower back comprises the lumbar spine, which is formed by vertebral bones, intervertebral discs, nerves, muscles, ligaments, and blood vessels.Overview of the intrinsic muscles of the back. This can cause lower back pain and possibly numbness that radiates through the leg and down to the foot . The spine has several major roles in the body that include: protection of the spinal cord and branching spinal nerves, support for thorax and abdomen, and enables .Soft Tissues of the Lumbar Spine.Positions that load the spine, (in particular, sitting and standing) pushes water out of the disc.

Lumbar Spine: What It Is, Anatomy & Disorders

Unlike the muscles and organs of our bodies, the intervertebral disc has .These 25 discs (7 cervical, 12 thoracic, 5 lumbar, and 1 sacral) account for about 25% to 33% of the length of the spine. The components of the disc are nucleus pulposus, annulus fibrosus and cartilagenous end .

Intervertebral Discs: Structure, Function, and Disorders

Intervertebral discs consist of an outer fibrous ring, the anulus (or annulus) fibrosus disci intervertebralis, .

Discs are named by the vertebral body above and below. By using the site you are agreeing to this as outlined in our privacy notice and cookie policy. (D) prevent lateral bending of the vertebral. The first step in treatment is to reduce pain and reduce the risk of further injury to the spine.The intervertebral discs (or discs) are fibrocartilages lying between adjacent surfaces of the vertebrae. Waxenbaum; Vamsi Reddy; Bennett Futterman. Between each vertebral body is a cushion called an intervertebral disc. It extends from the skull to the coccyx and includes the cervical, thoracic, lumbar, and sacral regions. Lumbar disk disease causes lower back pain and leg pain and weakness that is made worse by movement and activity.

The spine, also known as the vertebral column or spinal column, is a column of 26 bones in an adult body — 24 separate vertebrae interspaced with cartilage, and then additionally the sacrum and coccyx. The IVD consists of an inner core proteoglycan-rich nucleus pulposus (NP) and outer lamellae collagen-rich annulus fibrosus (AF) and is confined by a cartilage end plate (CEP), providing structural . Peer-Reviewed | Español.

Deep back muscles: Anatomy, innervation and functions

The two lowest discs (L4-L5 and L5-S1) take the most strain and are the most likely to herniate.

The Spinal Column: Anatomy and 3D Illustrations

Pathology of the spine can lead to debilitating outcomes on quality of life.It is part of the axial skeleton and extends from the base of the skull to the tip of the coccyx.Vertebrae, along with intervertebral discs, compose the vertebral column or spine.

Spine (Vertebral Column)

2023Temps de Lecture Estimé: 7 minThe back supports the body’s weight and allows for flexible movement while protecting vital organs and nerve structures.

Back muscles: Anatomy and functions

(B) flex the head.Adjacent vertebrae articulate through zygapophyseal joints between the respective superior and inferior facets of the vertebral articular processes as well as through the joints of the spine through intervertebral discs.Your spine is a complex structure of small bones, cushioning disks, nerves, joints, ligaments and muscles. By: Thomas Scioscia, MD , Orthopedic Surgeon.Date de publication : 15 févr.The vertebral column, commonly known as the spine, spinal column, or backbone, is a flexible hollow structure through which the spinal cord runs. The vertebral column consists of 33 vertebrae which can be split up into 5 continuous sections. The vertebral column forms the axial skeleton, skull bones, ribs, and sternum. The components of the disc are nucleus pulposus, annulus fibrosus and cartilagenous end-plates. For example, the disc between the fifth and sixth cervical vertebrae is .1 Anatomy of the Intervertebral Disc. It comprises the spine, nerves, and . Lying down on your back (called the supine position) facilitates water coming back into the disc.