Spine Anatomy Numbers

The human spinal cord is about 45 cm 18 in in men and 43 cm 17 in long in women. The two main muscle groups that affect the spine are extensors and flexors.

Learn All About Lumbar Spine Anatomy From A World Renowned

Each lumbar spine segment is comprised of.

Spine anatomy numbers. Technically speaking the spinal column includes 34 bones. The vertebral column is subdivided into five regions with the vertebrae in each area named for that region and numbered in descending order. Information and pictures of the spine and spinal cord showing c1 to s5 vertebra and which vertebra effect various body functions.

The spine bones are often referenced with letters and numbers. Spine anatomy is divided into 4 major sections typically defined by the number of vertebrae the round bones that make up the structure of ones back bone in each section. The human spine is composed of 33 vertebrae that interlock with each other.

First are the vertebrae of the spine and underneath those are three layers of tough membrane called the meninges. Two vertebrae such as l4 l5 stacked vertically with an intervertebral disc between them. The spine is made of 33 individual bones stacked one on top of the other.

L1 l2 l3 l4 and l5. Cervical spine neck comprised of 7 cervical vertebrae termed c1 to c7 starting with c1 at the top of the spine and ending with c7 at the bottom of the cervical portion of the spine. The vertebral column originally develops as a series of 33 vertebrae but this number is eventually reduced to 24 vertebrae plus the sacrum and coccyx.

Within each region the vertebral bones are numbered from the top down. When healthcare professionals refer to the spine theyre generally talking about the 24 vertebrae that form an elegant double s shaped line. Vertebrae are also sometimes called vertebral bodies.

Prior to adolescence the spine consists of 33 bones because the sacrums five bones and the coccyxs four do not fuse together until adolescence. C1 refers to the top cervical bone. Anatomy of the spine overview.

The lumbar spine has 5 intervertebral segments termed lumbar segment 1 through 5 eg. The spinal cord like the brain has two major layers of protection. The vertebrae are named by the first letter of their region cervical thoracic or lumbar and with a number to indicate their position along the superior inferior axis.

The upper twenty four are articulating and separated from each other by intervertebral discs and the lower nine are fused in adults five in the sacrum and four in the coccyx or tailbone. In a humans vertebral column there are normally thirty three vertebrae. When viewed from the side an adult spine has a natural s shaped curve.

Twenty four bones are articulated vertebrae bones a singular bone is a vertebra. C t l and s refer to the cervical thoracic lumbar and sacral regions respectively. The articulating vertebrae are named according to their region of the spine.

Neck problems can cause neck pain andor pain that radiates down the arms to. At the bottom of the spinal column are the remaining bones the naturally fused vertebrae of the sacrum and coccyx which join with your pelvis hip bones.

Vertebral Column Names Spine Stock Vector Illustration Of