Atlas

Difference Between Atlas and Axis Vertebrae

Difference Between Atlas and Axis Vertebrae

The atlas is the first cervical vertebra and articulates with the occiput of the head and the axis (C2). It differs from the other cervical vertebrae in that it has no vertebral body and no spinous process. Instead, the atlas has lateral masses which are connected by an anterior and posterior arch.

  1. How do you identify Atlas and Axis?
  2. What is the function of the atlas and axis?
  3. What makes C1 and C2 different from the rest of the vertebrae?
  4. What is the function of the atlas and axis in the vertebral column?
  5. How are the atlas and axis unique?
  6. What joint is between the atlas and axis?
  7. What is the atlas in your body?
  8. Why is C2 called axis?
  9. What is the joint in the neck called?
  10. Which vertebrae are at the very bottom of your spine?
  11. What are the seven vertebrae in the neck called?
  12. Is there a disc between C1 and C2?

How do you identify Atlas and Axis?

The axis is the second cervical vertebra; it has what is called the odontoid process about which the atlas rotates. The joint between the atlas and axis is a pivot type of joint. It allows the head turn from side to side. It is also called the atloaxoid joint.

What is the function of the atlas and axis?

The atlas and axis support the head on the lower cervical spine while providing for considerable mobility in flexion, extension, rotation and lateral bending. The first two vertebrae also function as conduits for the cervical cord and vertebral arteries.

What makes C1 and C2 different from the rest of the vertebrae?

The C1 vertebra, also called atlas, is shaped like a ring. The C2 vertebra has an upward-facing long bony process called the dens. The dens forms a joint with the C1 vertebra and facilitates its turning motions, thereby allowing the head to turn in different directions.

What is the function of the atlas and axis in the vertebral column?

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.

How are the atlas and axis unique?

The atlas and axis have additional features that mark them apart from the other cervical vertebrae. The atlas is the first cervical vertebra and articulates with the occiput of the head and the axis (C2). It differs from the other cervical vertebrae in that it has no vertebral body and no spinous process.

What joint is between the atlas and axis?

Anatomical terminology

The atlanto-axial joint is a joint in the upper part of the neck between the first and second cervical vertebrae; the atlas and axis. It is a pivot joint. The atlanto-axial joint is of a complicated nature. It consists of no fewer than four distinct joints.

What is the atlas in your body?

The Atlas: The Top Bone in Your Cervical Spine

The occipital bone rests upon the atlas, the first bone in your neck. The atlas is named after the Greek God Atlas, who held up the world on his shoulders. A pair of synovial joints, known as the atlanto-occipital joint connect the atlas and your skull.

Why is C2 called axis?

C2 (cervical vertebra): C2 is the symbol for the second cervical vertebra, which is also called the axis. It is so-named because the uppermost cervical vertebra (called the atlas) rotates about the odontoid process of the second cervical vertebra. The joint between the axis and atlas is a pivot type of joint.

What is the joint in the neck called?

The top seven bones in the spinal column form your neck, and these are called the cervical vertebrae. The bones are linked together by facet joints. These are small joints between your vertebrae that, together with your neck muscles, allow you to move your head in any direction.

Which vertebrae are at the very bottom of your spine?

The bottom of the spine is called the sacrum. It is made up of several vertebral bodies usually fused together as one. The remaining small bones or ossicles below the sacrum are also fused together and called the tailbone or coccyx.

What are the seven vertebrae in the neck called?

The cervical spine has 7 stacked bones called vertebrae, labeled C1 through C7.

Is there a disc between C1 and C2?

There is no intervertebral disc between C1 and C2, which is unique in the spine.

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