Thoracic Vertebra - Bony Features and Joints

Question 1

Which thoravic vertebra are typical and which are atypical?

Answer 1

T1: Atypical
T2-T8: Typical
T9-T12: Atypical

Question 2

Describe the features of a typical vertebra

body, vertebral canal, SP, facets, other

Answer 2

Body: Heart Shaped
Vertebral Canal: small and circular
Spinous Process: long, slender, projects inferiorly
Facets: 4x demi facets (one superior and one infeior on each side)
Long transverse process with a facet for rib
Pedicle
Lamina

Question 3

Describe the features of T1

Answer 3

Smaller body than typical vertebra
1x full facet for rib 1
1x demifacet for rib 2

Question 4

Describe the features of T10

Answer 4

Full facet for Rib 10

No demifacets, only one rib joins

Question 5

Describe the features of T11/T12

Answer 5

Full facet for Rib 11 or Rib 12
No demifacets, only one rib joins
Absence of facet on transverse process

Question 6

What and which are true false and floating ribs?

Answer 6

True: T1-T7, directly attach to sternum
Flase: T8-10, indirectly attach to sternum
Floating: T11/T12, no attachment to sternum, floating.

Question 7

What joints are present in the vertebral column?

Answer 7

Zygapophyseal (facet) joints

Intervertebral Joints

Question 8

Zygapophyseal (facet) joints

Bones, classification, movement, ligaments, other structure

Answer 8

Bones - Inferior/superior articulation process
Classification - Synovial Plane
Movment - Gliding
Ligaments - Supraspinous, Interspinous, Ligamentum Flavum, Intertransverse (see lumbar cards for detail)
Other - Thin joint capsule

Question 9

Intervetebral Joint
(Bones, classification, movement, ligaments, other structure)

Answer 9

Bones - 2x bodies of vertebra
Classification - Secondary cartilagenous
Movment - Little, designed to restrict movement
Ligaments - PLL/ALL (see lumbar cards for detail)
Other - IVD