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
Describe the motion of the TP and ribs during SB
Ipsilateral TP glides inf on rib, ant rot of neck of rib
Contralateral TP glides sup, post rot of rib neck
Thoracic rot
35-50
Pure axial rot at thoracolumbar and cervicothoracic jcts
