What are the 5 segments of the spine?

Sections. The spine is composed of 33 bones, called vertebrae, divided into five sections: the cervical, thoracic, and lumbar spine sections, and the sacrum and coccyx bones. The cervical section of the spine is made up of the top seven vertebrae in the spine, C1 to C7, and is connected to the base of the skull.

What are the segments of the spine called?

The spine itself has three main segments: the cervical spine, the thoracic spine, and the lumbar spine. The cervical is the upper part of the spine, made up of seven vertebrae (bones). The thoracic is the center portion of the spine, consisting of 12 vertebrae. The lower portion of the spine is called the lumbar spine.

What are the 4 segments of the spine?

The spinal cord is a cylindrical structure of nervous tissue composed of white and gray matter, is uniformly organized and is divided into four regions: cervical (C), thoracic (T), lumbar (L) and sacral (S), (Figure 3.1), each of which is comprised of several segments.

What are the 3 segments of the spine?

The spine has three normal curves: cervical, thoracic and lumbar. There are seven cervical vertebrae in the neck, 12 thoracic vertebrae in the torso and five lumbar vertebrae in the lower back.

How many segments are in the vertebral column?

33 segments
The spine is divided into 33 segments, 24 of which are mobile. Working from the top downwards, the cervical spine is the portion of the spine within the neck, and consists of 7 vertebrae (C1 to C7).

How many segments are in the thoracic spine?

Thoracic vertebrae are the twelve vertebral segments (T1-T12) that make up the thoracic spine. These structures have very little motion because they are firmly attached to the ribs and sternum (breastbone).

How many segments does the lumbar spine have?

5 intervertebral
The lumbar spine has 5 intervertebral segments, termed lumbar segment 1 through 5 (e.g. L1, L2, L3, L4, and L5). Each lumbar spine segment is comprised of: Two vertebrae, such as L4-L5, stacked vertically with an intervertebral disc between them.

What is the relationship between the spinal cord segments and spinal vertebrae?

What is the relationship between the spinal cord segments and spinal vertebrae? Where does the spinal cord end? The spinal cord segments end about half of the way down the spinal vertebrae, and the segments come out from the pedicles of the vertebrae.

How many spinal vertebrae are in each segment?

Each vertebral segment is made up of two bony vertebrae with a spinal disc in between. The spinal disc is also susceptible to a number of problems and may often be a source of pain, as discussed on the next page.

What is a bilateral transection of the spinal cord?

Definition: damage to the spinal cord resulting in complete bilateral loss of communication between the nerve fibers above and below the lesion. Epidemiology: ∼ 33% of annual spinal cord injuries in the US. Etiology. Trauma (complete spinal cord transection)