Spine Numbers Anatomy

The human spinal cord is about 45 cm 18 in in men and 43 cm 17 in long in women. The spine is naturally curved.

Science Source Diagram Of The Human Spine With Numbers For

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.

Spine numbers anatomy. 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. These curves make the spinal column stronger help absorb shock from running and jumping and help you maintain your balance. The 7 vertebrae in the neck form the cervical region of the spine.

Sacral attached to the pelvis. Thoracic in the chest. 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 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. Anatomy of the spine overview.

The spine is made of 33 individual bones stacked one on top of the other. The 5 vertebrae in the lower back form the lumbar region of the spine. The articulating vertebrae are named according to their region of the spine.

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. When viewed from the side an adult spine has a natural s shaped curve. The 12 vertebrae in the chest region form the spines thoracic region.

The spine is an intricate set of bones muscles nerves and discs. Vertebrae are also sometimes called vertebral bodies. Information and pictures of the spine and spinal cord showing c1 to s5 vertebra and which vertebra effect various body functions.

Posteriorly the body is connected to a thin ring of bone known as the arch. The cervical spine has 7 stacked bones called vertebrae labeled c1 through c7. The lumbar vertebrae are the some of the largest and heaviest vertebrae in the spine second in size only to the sacrum.

Each bone within an area has its own number. There are 5 major regions of the spine. Spinal anatomy the regions of the spine.

The two main muscle groups that affect the spine are extensors and flexors. Each region has a number of vertebral bones. In a humans vertebral column there are normally thirty three vertebrae.

It is divided into five regions. And coccygeal the tail bone. The spinal cord like the brain has two major layers of protection.

The top of the cervical spine connects to the skull and the bottom connects to the upper back at about shoulder level. The size of the curves varies by individuals but excessive curves can cause problems.

Cervical Spine Anatomy