Is C3 superior or inferior?

Is C3 superior or inferior?

C3 and C4 are at the level of the hyoid bone and the superior aspect of the thyroid cartilage. C5 and C6 are at the level of the posterior cricoid cartilage. C7 is at the lower limit of the neck and in some patients may be below the level of the clavicle.

Which vertebrae is most superior?

The cervical vertebrae are the smallest and most superior of the vertebrae. The most superior of these vertebrae articulate with the skull.

Which is superior atlas or axis?

The atlas and axis vertebrae are the two most superior bones in the vertebral column, and they are part of the seven cervical vertebrae. The atlas is the top-most bone, sitting just below the skull; it is followed by the axis. Together, they support the skull, facilitate neck movement, and protect the spinal cord.

Where are the axis vertebra?

In anatomy, the axis (from Latin axis, “axle”) or epistropheus, is the second cervical vertebra (C2) of the spine, immediately inferior to the atlas, upon which the head rests.

Why is C7 prominent?

The seventh cervical vertebra is known as the vertebra prominens because of its prominent spinous process (Fig. 5-14). Because of its large spinous process and its location at the base of the neck, C7 serves as an attachment site for many muscles.

Where is C1 and C2 on the spine?

cervical spine
The C1 and C2 vertebrae are the first two vertebrae at the top of the cervical spine. Together they form the atlantoaxial joint, which is a pivot joint. The C1 sits atop and rotates around C2 below. More of the head’s rotational range of motion comes from C1-C2 than any other cervical joint.

Which vertebrae is most inferior?

coccyx
The most inferior region of the vertebral column is the b. coccyx.

What is the correct order of the vertebrae from superior to inferior?

From superior to inferior, these are: Cervical: 7 vertebrae (C1 = highest; C7 = lowest) Thoracic: 12 vertebrae (T1 = highest; T12 = lowest) Lumbar: 5 vertebrae (L1 = highest; L5 = lowest)

What are the superior projections of each vertebra?

Pedicles. Each vertebra has two cylinder-shaped projections (pedicles) of hard bone that stick out from the back part of the vertebral body, providing side protection for the spinal cord and nerves. The pedicles also serve as a bridge, joining the front and back parts of the vertebra.

Which vertebrae has no vertebral?

The atlas
The atlas (C1 vertebra) does not have a body or spinous process. It consists of an anterior and a posterior arch and elongated transverse processes.

What is the function of axis vertebra?

The Axis (C2 vertebra) also known as epistropheus forms the pivot upon which the first cervical vertebra (the Atlas), which carries the head, rotates. The axis is composed of a vertebral body, heavy pedicles, laminae, and transverse processes, which serve as attachment points for muscles.

What is axis vertebra?

What is Axis Vertebra. Axis (C2) vertebra is the second cervical vertebra of the spine. The main feature of the axis vertebra is the presence of an odontoid process or dens to articulate with the atlas. And, this articulation forms a pivot between the atlas and the axis.

What is axaxis C2 vertebra?

Axis (C2) vertebra is the second cervical vertebra of the spine. The main feature of the axis vertebra is the presence of an odontoid process or dens to articulate with the atlas. And, this articulation forms a pivot between the atlas and the axis.

Where does the dens axis articulate with the vertebrae?

It articulates with body of the vertebra below (C3). Odontoid process or dens ( Dens axis) is a prominent rounded superior projection from the body. This tooth-like elevation serves a stable point around which the atlas bone rotates ( Gr., odous, tooth ).

Why is the second cervical vertebra also called the axis bone?

This is the reason why the second cervical vertebra is also called the axis bone. Body or centrum ( Corpus vertebrae) is a cylindrical mass on anterior side of the vertebra. It articulates with body of the vertebra below (C3). Odontoid process or dens ( Dens axis) is a prominent rounded superior projection from the body.