Atlas

Atlas

Question 1. Typical features of atlas
Answer:

• Atlas is ring shaped

“Understanding the atlas vertebra through FAQs: Anatomy, functions, and uses explained”

• Atlas  has following features
• • Short anterior arch marked by medial anterior tubercle
  • Long posterior arch forming 2/5th of the ring
  • Lateral masses
• Atlas  upper & lower surfaces bears superior articular facet & inferior articular facet
• • Transverse process
• Atlas can be felt on the surface of the neck between angle of mandible & mastoid process

“Importance of studying the atlas vertebra for anatomy students: Questions explained”

Question 2. Altlanto-occipital joint
Answer:

• Altanto-occipital joint is synovial joint

Altlanto-occipital joint Articular surfaces:

• Above occipital condyles
• Below-superior anterior facets of the atlas vertebrae.

Altlanto-occipital joint Ligaments:

• Fibrous capsule
• Anterior atlanto-occipital membrane
• Posterior atlanto-occipital membrane

“Common challenges in mastering atlas vertebra notes effectively: FAQs provided”

Altlanto-occipital joint Arterial supply:

• Vertebral artery

Altlanto-occipital joint Nerve supply:

• First cervical nerve

Altlanto-occipital joint Movements:

• Flexion – around transverse axis
• Extension – around transverse axis
• Lateral bending – around anteroposterior axis