What is Atlas and Axis?

Publish date: 2022-11-05
The atlas is the first cervical (neck) vertebra which is just under the head; it is named for Atlas, the Greek god who supported the world on his shoulders. The axis is the second cervical vertebra; it has what is called the odontoid process about which the atlas rotates.

Also know, what is the difference between Atlas and Axis?

The main difference between atlas and axis vertebrae is that atlas is the first cervical vertebra, which supports the skull whereas axis is the second cervical vertebra, which forms the pivot upon the atlas. Furthermore, atlas help to hold the head upright while axis allows the head to turn side to side.

Additionally, what does the axis bone do? The axis, also known as the C2 bone, creates a pivot that allows the C1, or atlas, to rotate. This action gives the head and neck a greater range of motion from side to side. The pivoting motion occurs on part of the bone called the dens, a tooth-like upright section on the bone.

Also to know, how does the atlas and axis work?

The atlas and axis in particular work with the ligaments to move the neck. The atlas and the occipital bone form the atlanto-occipital joint, which allows neck flexion. When you nod your head as if to say "yes," that is neck flexion. The atlas and axis form the atlanto-axial joint, which allows head rotation.

Is Atlas c1 or c2?

The C1 and C2 vertebrae are the first two vertebrae of the cervical spine. They are also called the atlas and axis vertebrae.

What is the significance of the atlas and axis?

The atlas is the first cervical (neck) vertebra which is just under the head; it is named for Atlas, the Greek god who supported the world on his shoulders. The axis is the second cervical vertebra; it has what is called the odontoid process about which the atlas rotates. It allows the head turn from side to side.

What is a pivot joint?

Pivot joint, also called rotary joint, or trochoid joint, in vertebrate anatomy, a freely moveable joint (diarthrosis) that allows only rotary movement around a single axis. The moving bone rotates within a ring that is formed from a second bone and adjoining ligament.

What is your neck joint called?

The pivot joint in your neck allows you to turn your head from side to side.

What does the Atlas articulate with?

occipital condyle

Where is the axis bone?

Anatomical terms of bone In anatomy, the second cervical vertebra (C2) of the spine is named the axis (from Latin axis, "axle") or epistropheus. By the atlanto-axial joint, it forms the pivot upon which the first cervical vertebra (the atlas), which carries the head, rotates.

Is the neck considered a joint?

Pivot joints are found in your neck vertebrae, while hinge joints are located in your elbows, fingers, and knees.

What is the dens in the cervical spine?

Odontoid process (Dens) This is a rostral, or upwards extension from the body of the Axis (C2, Second cervical vertebral body). It serves as a point of rotation of Atlas (C1, First cervical vertebral body) and the Axis (C2, Second cervical vertebral body).

What movement does the c1 atlas permit?

C1 Physiology The atlas plays a vital role in the support and movement of the head and neck. Several muscles in the neck pivot the skull at the atlanto-occipital joint to make the head flex and extend in a nodding motion.

What does your c2 control?

What is a C2 Vertebra? The C2 vertebra is the axis which the C1 vertebra pivots around and lets us move our skulls from side to side in a horizontal motion. Like the C1 vertebra, a C2 vertebra has a greater degree of motion than other vertebrae that are lower on the spinal column.

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 Latin word "axis" means axle or pole.

Which bone is called Yes bone?

✌?✌? hey, ➡?Atlas bone is also called Yes bone because it is responsible for the yes movement that we can do..

What is the top vertebrae called?

The spine is made up of 24 segments called vertebrae. These bones are stacked on top of one another. There are seven vertebrae in the neck called cervical vertebrae. These are often referred to as C1 through C7 (top to bottom).

What is the atlantoaxial joint?

The atlantoaxial 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. There is a pivot articulation between the odontoid process of the axis and the ring formed by the anterior arch and the transverse ligament of the atlas.

Where is your atlas?

The atlas is one of the two upper cervical vertebrae, also known as C1, which is the topmost vertebra of the spinal column. It is the vertebra that is in contact with the occipital bone, a flat bone located at the back portion of the head.

What are the distinct features of the atlas and axis?

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 type of bone is Axis?

Introduction to Axis Bone Anatomy: Inferior to the atlas bone (C1) is the second cervical vertebra (C2), which is also referred to as the axis bone (axis, vertebra cervicalis II). One of the most prominent features of the axis bone is a superior, tooth-like projection called the odontoid process (or dens).

Which is the main feature of axis vertebra?

The axis is the second cervical vertebra, commonly called C2. It is an atypical cervical vertebra with unique features and important relations that make it easily recognisable. Its most prominent feature is the odontoid process (or dens), which is embryologically the body of the atlas (C1) 1,2.

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