Vertebral column

Question 1

Spinal nerves

Answer 1

• 8 Cervical
• 12 Thoracic
• 5 Lumbar
• 5 Sacral

Question 2

Dorsal rootlet

Answer 2

Sensory information

Question 3

Ventral rootlet

Answer 3

Motor information

Question 4

Where do spinal neves exit the vertebral column?

Answer 4

• Via Intervertebral Foramen

Question 5

Vertebral body

Answer 5

• Largest part of Vertebra and is roughly oval shaped\

- Flattened for cartilaginous discs

Question 6

Neural arch components and function:

Answer 6

• Pedicle- joins body to transverse process
• Transverse process- attachment for muscles and ligaments
• Articular process- form synovial facets with vertebra
• Lamina- joins transverse to spinous
• Spinous process- directed downwards and backwards, attachment for vertebral ligaments

Question 7

C1= Atlas specialisation

Answer 7

• Kidney shaped facets for occipital condyles which allows nodding at atlanto-occipital joint
• No spinous process
• Has a facet for dens process

Question 8

C2= Axis specialisation

Answer 8

• Dens process- Atlanto-axial joint which is a pivot joint which allows rotation of head.

Question 9

Ligaments of Vertebral column

Answer 9

• Articular ligaments= synovial articulations between ribs and vertebral column and facets of vertebrae
• Adjacent vertebral spines= Infraspinous and Supraspinous
• Ligamentum Flavum= connects adjacent laminae
• Ligmentum Nuchae- Thickening of Supraspinous ligaments in cervical region
• -> runs from Occipital protuberance and nuchal line to C7.