Vertebral Column Flashcards
How many elements is a typical vertebral column composed of?
33
How many elements of the vertebral column are separate?
24
Name the segments of the vertebral column
Cervical Thoracic Lumbar Sacral Coccygeal
What are the vertebrae divided by?
Intervertebral fibrocartilaginous discs (synovial joints)
Name the articular facets
2 superior articular facets and 2 inferior articular facets
Do the articular facets change at all as they descend the column?
Yes, their morphology changes depending on their position within the columns and produce different movements
Name the primary functions of the vertebral column
Transmit body weight
Attachment site for muscles and ligaments
Protect spinal cord
Does the vertebral foramen alter in size at all?
Yes it decreases as it descends as there is less spinal cord at the bottom of the spine
If people have a varied number of vertebrae, what segment(s) is this usually in?
Lower thoracic and lumbar (10% of people)
What is the vertebral column derived of?
Somites
Name the 2 kinds of curvature
Primary
Secondary
Describe origin of primary curvature
Present at birth (congenital)
Describe origin of secondary curvature
Developmental (acquired over time)
How many curvatures does an adult vertebral column have?
4 - 2 primary and 2 secondary
What is another name for primary curvature?
Kyphotic
What is another name for secondary curvature?
Lordotic
What segment(s) are primary curvatures (mainly)
Thoracic
What segment(s) are secondary curvatures?
Cervical and lumbar
What milestones do secondary curvatures develop with?
Lifting/supporting own head
Sitting up unsupported
Standing
List the features of a ‘typical’ vertebra
Body Spinous process 2 transverse processes Neural arch vertebral foramen Superior and inferior articular facets
Describe the formation of the neural arch
Neural arch is formed in two parts and is separate from the body
Its formed of the pedicle (attaches body to rest of vertebra) and lamina (attaches transverse and spinous processes)
What travels through the vertebral foramen?
Spinal cord
Where does vertebrae join with each other?
Superior and inferior articular facets
What is formed when two vertebrae articulate with each other?
Intevertebral foramen