Spinal Anatomy

Question 1

What doesn’t the Atlas Vertebra have?

Answer 1

A Vertebral Body, instead it is shaped more like a ring.

Question 2

What is the Joint called that connects the Atlas to the Occipital Bone.

Answer 2

• Atlanto-Occipital Joint.

- About 50% of the head Flexion and Extension occurs at this Joint.

Question 3

What is the Large Bony Protrusion called found on the Axis?

Answer 3

• The Odontoid Process.

- This points up from the Vertebral Body and fits into the ring-shaped Atlas above it.

Question 4

What is the Joint called between the Atlas and Axis?

Answer 4

• Atlanto-Axial Joint.

- The Atlas is able to rotate around the Axis on this and causes 50% of the heads rotation.

Question 5

What’s Unique about C7

Answer 5

Usually has the most prominent Spinous Process (Vertebra Prominens).

Question 6

What’s the C7-T1 Joint called?

Answer 6

Cervicothoracic Junction.

Question 7

Why do more muscles connects to the C7 Spinous Process compared to other Cervical Vertebrae?

Answer 7

• Larger Size

- Key Location

Question 8

What three longitudinal arteries supply the spinal cord with blood?

Answer 8

• Anterior Spinal Artery

- Left and Right Posterior Arteries

Question 9

Name all 3 lawyers of Tissue that make up the Meninges that protect the spinal cord:

Answer 9

• Pia Matter
• Arachnoid Mater
• Dura Matter