Spine Numbers Anatomy

Each bone within an area has its own number. Vertebrae are also sometimes called vertebral bodies.

The Vertebral Column Anatomy And Physiology I

There are 5 major regions of the spine.

Spine numbers anatomy. The human spinal cord is about 45 cm 18 in in men and 43 cm 17 in long in women. When viewed from the side an adult spine has a natural s shaped curve. Posteriorly the body is connected to a thin ring of bone known as the arch.

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. The size of the curves varies by individuals but excessive curves can cause problems. The spine is made of 33 individual bones stacked one on top of the other.

The spinal cord like the brain has two major layers of protection. The two main muscle groups that affect the spine are extensors and flexors. The cervical spine has 7 stacked bones called vertebrae labeled c1 through c7.

Anatomy of the spine overview. Information and pictures of the spine and spinal cord showing c1 to s5 vertebra and which vertebra effect various body functions. It is divided into five regions.

As viewed from the side the cervical spine forms a lordotic curve by gently curving toward the front of the body and then back. The 12 vertebrae in the chest region form the spines thoracic region. The 7 vertebrae in the neck form the cervical region of the spine.

And coccygeal the tail bone. The spine is an intricate set of bones muscles nerves and discs. First are the vertebrae of the spine and underneath those are three layers of tough membrane called the meninges.

The lumbar vertebrae are the some of the largest and heaviest vertebrae in the spine second in size only to the sacrum. The spine is naturally curved. 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. The top of the cervical spine connects to the skull and the bottom connects to the upper back at about shoulder level. Spinal anatomy the regions of the spine.

A cylinder of bone known as the vertebral body makes up the majority of the lumbar vertebraes mass and bears most of the bodys weight. These curves make the spinal column stronger help absorb shock from running and jumping and help you maintain your balance. Sacral attached to the pelvis.

Each region has a number of vertebral bones. In a humans vertebral column there are normally thirty three vertebrae. The articulating vertebrae are named according to their region of the spine.

Thoracic in the chest. The 5 vertebrae in the lower back form the lumbar region of the spine.

Anatomy Of The Spine Southern California Orthopedic Institute