The normal anatomy of the spine is usually described by dividing up the spine into three major sections:
the cervical, the thoracic, and the lumbar spine
. (Below the lumbar spine is a bone called the sacrum, which is part of the pelvis).
What are the three main parts of your vertebrae?
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.
What are the parts of a vertebra?
Coccyx region – the four fused bones of the coccyx or tailbone provide attachment for ligaments and muscles of the pelvic floor. Figure 3. A vertebra has three parts:
body (purple), vertebral arch (green), and processes for muscle attachment (tan)
.
What are the 3 main functions of the vertebrae?
- Protect the spinal cord, nerve roots and several of the body’s internal organs.
- Provide structural support and balance to maintain an upright posture.
- Enable flexible motion.
What are the 3 sections of vertebrae from top down?
Figure 6.29. Vertebral Column The adult vertebral column consists of 24 vertebrae, plus the sacrum and coccyx. The vertebrae are divided into three regions:
cervical C1–C7 vertebrae, thoracic T1–T12 vertebrae, and lumbar L1–L5 vertebrae
.
What is the typical vertebra?
A
typical vertebra
is made up of an anterior
vertebral
body and a posterior
vertebral
arch:
Vertebral
body: The
vertebral
body is fairly large, especially in a lumbar
vertebra
(in other words, a
vertebra
found in the lower back). The
vertebral
bodies support the weight of your body.
What are the 26 vertebrae?
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
.
Can you live without a spine?
You can’t live without a spine
. Some conditions, such as SCI and spina bifida, can affect the spinal cord, leading to symptoms like partial or complete loss of movement or sensation. However, many individuals with these conditions go on to lead active, fulfilling lives.
What part of the spine controls the legs?
The nerves of the cervical spine go to the upper chest and arms. The nerves in your thoracic spine go to your chest and abdomen. The
nerves of the lumbar spine
then reach to your legs, bowel, and bladder. These nerves coordinate and control all the body’s organs and parts, and let you control your muscles.
What is the D spine?
Definition. One of the three distinct portions along the spine or the vertebral column (the other two are the cervical spine and the lumbar spine), and is the
longest section comprised of twelve thoracic vertebrae
that house the spinal cord along the rachidian channel.
What is back trauma?
Severe back injuries include fractures
(a break in a bone), wounds, extensive bruising and damage to your spinal cord and internal organs
. Any of the following symptoms could indicate a severe back injury. You should see a doctor right away if you have: difficulty breathing or shortness of breath.
What are the 3 categories of back pain?
- Acute Pain. Acute pain, or short-term pain, can last anywhere from a day up to four weeks. …
- Subacute Pain. Subacute pain lasts anywhere from four to 12 weeks. …
- Chronic Pain. …
- Lower Back Spasms. …
- Pain From Lower Back to Buttocks and Legs. …
- Pain That Moves.
What is backbone called?
Also called
spinal column, spine, and vertebral column
. … Enlarge. Anatomy of the spine. The spine is made up of bones, muscles, tendons, nerves, and other tissues that reach from the base of the skull near the spinal cord (clivus) to the coccyx (tailbone).
Which vertebra has an odontoid process?
Axis (C2) The second cervical vertebra, or axis
, supports the dens, or odontoid process, which projects rostrally from the body, serving as a pivotal restraint against horizontal displacement of the atlas.
Which part of the spine is most vulnerable to injury?
The most vulnerable areas of the spine are
the lumbar (lower back), and the cervical (neck) regions
. They are the most mobile, and susceptible to injury. The lower back is also the main weight bearing part of the spine.
What is a spine facet?
The facet joints are
the connections between the bones of the spine
. The nerve roots pass through these joints to go from the spinal cord to the arms, legs and other parts of the body. These joints also allow the spine to bend and twist, and they keep the back from slipping too far forward or twisting without limits.
