Flashcards in Anatomy of the vertebral column Deck (102)
What does the back include? (7)
3. Vertebral column
4. Spinal cord and meninges
6.Nerves and vessels
How many cervical vertebrae are there?
How many thoracic vertebrae are there?
How many lumbar vertebrae are there?
How many sacral vertebrae are there?
How many bones are there in the coccygeal/coccyx region?
4 (small tightly fused bones)
Why do you become shorter when you are older?
-the intervertebral disks shrink as they become dehydrated
What is involved in the general structure of a vertebra? (5)
2. vertebral arch --> pedicles and laminae
3. articular facets --> superior (x2) and inferior (x2)
4. Processes - transverse (x2) and spinous
5. vertebral foramen
What part of the vertebra is the weight bearing portion?
How many superior facets are there?
How many inferior facets are there?
How many transverse processes are there?
What runs through the vertebral foramen? (3)
1. spinal cord
What is the vertebral arch made up of? (2)
What are the 2 main types of processes in vertebra?
What runs through the intervertebral foramen?
- spinal nerve
Where are the vertebral notches?
-superior and inferior to the pedicles
What forms the intervertebral foramen? (2)
1. superior and inferior vertebral notches of adjacent vertebrae
2. intervertebral disc
What is the body of a cervical vertebra like? (2)
2. with elevated uncus
What are the transverse process and pedicles like in cervical vertebra?
- have tubercles anterior and posteriorly
What foramina are involved in cervical vertebrae?
- transverse foramina
What is the uncus of the body of the cervical vertebra?
- edges which unite vertebral bodies together
What is the spinous process of cervical vertebra like?
-BIFID (splits into 2)
Why is the body of cervical vertebra thin and small?
- for fine positioning and movement of the head
What passes through transverse foramina?
- vertebral arteries and veins
What is the cervical function of the foramina transversaria?
- allows passage of vertebral artery and vein to the brain
Which cervical level do the vertebral arteries and veins not pass through?
Why is dislocation of the cervical vertebrae likely?
- as the articular facets are FLAT
- hence here is not much bony congruity
What is the varying severity of dislocation of cervical vertebra?
1. Flexion sprain
2. 25% subluxation
3. 50% sublaxation
4. Complete dislocation - facet jumping