Thoracic and Lumbar Vertebrae

Question 1

All Thoracic Vertebrae:

costal facet and/or demifacet

costal facet of the transverse process

Answer 1

on lateral body/centrumof all thoracic vertebrae; for articulation of rib heads

on all thoracic vertebrae except T11 and T12 (11th and 12th ribs are floatingribs); for articulation of rib tubercles

Question 2

T1 Vertebra

Answer 2

• body: one complete costal facet and one inferior demifacet

- transverse process: costal facet

Question 3

T2–T8 Vertebrae

Answer 3

body: two demifacets (one superior and one inferior)

- transverse process: costal facet

Question 4

T9 Vertebra

Answer 4

• body: one superior demifacet only

- transverse process: costal facet

Question 5

T10 Vertebra

Answer 5

• body: one complete costal facet

- transverse process: costal facet

Question 6

T11 Vertebra

Answer 6

-body: one complete costal facet-transverse process: NO costal facet-inferior articular facet: flat and oriented anteriorly (typical ofthoracicvertebrae)

Question 7

T12 Vertebra

Answer 7

• body: one complete costal facet

- transverse process: NO costal facet

Question 8

All Lumbar Vertebrae:

mammillary process

accessory process

Answer 8

small tubercle posterior to the superior articular facet(on the most superoposterioraspect of the superior articular process/zygapophysis)

small tubercle on the medial aspect (posteroinferior)of transverse process

Question 9

L1 and L2 Vertebrae

Answer 9

from posterior, the four articular processes/zygopophysesform a vertical rectangle

Question 10

L3 and L4 Vertebrae

Answer 10

from posterior, the four articular processes/zygapophysesform a square

Question 11

L5 Vertebra

Answer 11

• from posterior, the four articular processes/zygapophysesform a horizontalrectangle
• the transverse processes unitedirectly with the lateral vertebral body(rather than with the vertebral arch)