The Atlas | Detailed Anatomy of the C1 Vertebra

The video tutorial provides a detailed examination of the C1 vertebra, known as the Atlas. It begins with an introduction to its mythological name and proceeds to explain how to orient the bone by identifying its superior, inferior, anterior, and posterior aspects. The tutorial then describes key anatomical structures such as the anterior and posterior tubercles, arches, and transverse processes. It also covers the facets and lateral mass, explaining their roles in supporting the skull and articulating with the Axis. Finally, the video discusses the pathway of the vertebral artery around the Atlas.

Why is the C1 vertebra referred to as the Atlas?

• It is located at the base of the spine.

• It is the largest vertebra in the spine.

• It supports the skull like Atlas supported the Earth.

• It resembles a map of the world.

How can you determine the superior part of the Atlas?

• By identifying the larger facets.

• By locating the spinous process.

• By measuring the thickness of the bone.

• By finding the anterior tubercle.

What is the function of the anterior tubercle on the Atlas?

• It connects to the occipital condyles.

• It serves as a point of muscle attachment.

• It articulates with the Axis.

• It houses the spinal cord.

Which structure replaces the spinous process in the Atlas?

• Transverse process

• Lateral mass

• Posterior tubercle

• Anterior tubercle

What do the superior facets of the Atlas articulate with?

• The Axis

• The vertebral artery

• The occipital condyles of the skull

• The anterior tubercle

What is the role of the lateral masses in the Atlas?

• They support the weight of the skull.

• They articulate with the occipital condyles.

• They house the vertebral artery.

• They connect to the spinal cord.

How does the vertebral artery interact with the Atlas?

• It passes through the spinous process.

• It loops around the lateral mass.

• It connects to the occipital condyles.

• It articulates with the inferior facets.