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Are there 7 or 8 cervical vertebrae?

Are there 7 or 8 cervical vertebrae?

In the cervical segments, there are 7 cervical vertebrae and 8 cervical nerves (Figure 3.2). C1-C7 nerves exit above their vertebrae whereas the C8 nerve exits below the C7 vertebra. It leaves between the C7 vertebra and the first thoracic vertebra.

What are the names of the 7 cervical vertebrae?

It consists of 7 bones, from top to bottom, C1, C2, C3, C4, C5, C6, and C7. In tetrapods, cervical vertebrae (singular: vertebra) are the vertebrae of the neck, immediately below the skull.

Are there 7 cervical vertebrae?

The cervical spine is made up of 7 vertebrae. The first 2, C1 and C2, are highly specialized and are given unique names: atlas and axis, respectively. C3-C7 are more classic vertebrae, having a body, pedicles, laminae, spinous processes, and facet joints.

Is there 12 cervical vertebrae?

However, the number of vertebrae can vary between 32 and 35. Usually there are 7 cervical, 12 thoracic, 5 lumbar, 5 sacral and 4 caudal (coccygeal) vertebrae. In humans, the length of the vertebral column is 71 cm in males and 61 cm in females.

What is the first cervical vertebra called?

C1. The Atlas, C1, is the topmost vertebra, and along with the Axis; forms the joint connecting the skull and spine. Its chief peculiarity is that it has no body, and this is due to the fact that the body of the atlas has fused with that of the Axis.

What neck problems qualify for disability?

Many of the neck problems seen on disability applications are due to degenerative disk disease, whiplash, herniated discs, inflammatory disorders such as arthritis, slippage of a vertebra (retrolisthesis or spondylolisthesis), pinched nerves, infections such as meningitis, and certain types of cancer.

What does C5 through C7 control?

C5 helps control the deltoids (which form the rounded contours of the shoulders) and the biceps (which allow bending of the elbow and rotation of the forearm). C7 helps control the triceps (the large muscle on the back of the arm that straightens the elbow) and wrist extensor muscles.

What is the most cranial cervical vertebra?

The CCJ includes the occiput and the two most cranial cervical vertebrae known as the atlas (C1) and the axis (C2) . The subaxial spine includes the five most caudal cervical vertebrae (C3-C5).

How many cervical vertebraes are found in the human spine?

The articulating vertebrae are named according to their region of the spine. There are seven cervical vertebrae, twelve thoracic vertebrae and five lumbar vertebrae. The number of vertebrae in a region can vary but overall the number remains the same.

What is a typical cervical vertebrae?

The typical cervical vertebrae are C3, C4, C5 and C6. The atypical cervical vertebrae are C1 – Atlas, C2 – Axis and C7 – vertebra prominens. It should be noted that all vertebrae except C1 and C2 consist of two broad portions:

Is the cervical vertebrae the smallest vertebrae?

In humans, cervical vertebrae are the smallest of the true vertebrae, and can be readily distinguished from those of the thoracic or lumbar regions by the presence of a foramen (hole) in each transverse process, through which the vertebral artery, vertebral veins and inferior cervical ganglion pass.