Question

Which type of joint is found in between atlas and axis vertebrae?

Answer 1

Hint: The atlas vertebrae is the superior most cervical vertebra in the spine. The axis vertebrae is the second cervical vertebra of the spine. It is located immediately posterior to the atlas vertebra.

Complete Answer:
The atlas vertebrae has no body and it is ring-like. The atlas vertebrae consists of an anterior arch and a posterior arch. The atlas vertebrae also consists of two lateral masses.
Odontoid processes are bony processes in the axial vertebra. These dens rise dorsally from the rest of the bones of the axis vertebra. The odontoid process can break in rare cases and hit the medulla oblongata and cause death.
The joint present between the atlas vertebra and the axis vertebra is the Atlanto-axial joint. The atlanto-axial joint is a pivot joint present between the first and second vertebrae. The atlanto-axial joint consists of at least four distinct joints within itself. The atlanto-axial joint has a complex nature. The odontoid process of the axial vertebra and the ring formed by the anterior arch of the atlas vertebra house the pivot articulation of the Atlanto-axial joint between them. There are three main Atlanto-axial joints. They are:
One median joint
Two lateral joints

Note:
The atlas vertebrae supports the head. The atlas vertebrae is the topmost vertebra and is located above the axis vertebrae.
The atlas vertebrae is located in the neck.
The axis vertebra supports the atlas vertebra in the resting of the head. The axis vertebra has strong odontoid processes called dens.