Quiz 5 Flashcards
How is the disc in thoracic different compared to c/s and l/s
Narrower and flatter
Size increases from superior to inferior
Where are the nerve roots located in t/s
Behind infpost aspect of vertebral body
Which direction do TP point
Posterior Lt
What type of jt does vertebrae 1-10 have
Costotransverse jt
Where do ribs T11-12 articulate
Vertebral body
3 words to describe shape of SP
Long, slender, triangular
Which segment has greatest angular ion
T7
Typical vertebrae
T2-9
Atypical vertebrae
T1, 10-12
Describe anterior longitudinal lig
Narrower but thicker in thoracic
Describe posterior longitudinal lig
Wider in thoracic but narrower in lumbar
What is the inclination of upper facets
45-60 degrees
What is the inclination of the middle facets
90 degrees
What is the inclination of lower facets
Similar to lumbar
Typical ribs
3-9
Atypical ribs
1, 10-12
4 primary mus for inspiration
Diaphragm, elevator costarum, external and internal intercostals
6 accessory mus for inspiration
Scaleni
SCM
Trap
SA, Post, sup, and inf
Pecs
Lat subclavius
Orientation of internal and external intercostals
Internal - down and out
External - down and in
What are the deepest intercostals? Function?
Transverse intercostals
Forced expiration
Function of trans versus thoracis
Draws costal cartilages down
Thoracic flexion
20-45
More in lower than upper
Thoracic ext
15-20
Thoracic SB
24-45
