quiz #2 Thoracic Cage Flashcards
The Thorax consists of how many vertebrae and ribs?
12 thoracic vertebrae
12 pairs of ribs
The 3 parts of the sternum
Manubrium
Body
Xiphoid Process
Which part of the sternum can be land marked by the 1st rib?
The manubrium
Which part of the sternum is used to land mark the 2nd rib?
The Manubriosternal joint (Sternal angle) AKA Angle of Louis
The body of the Sternum is also known as
Gladiolus meaning “small sword”
The thin process inferior to the body of the Sternum
Xiphoid Process
Which ribs are known as true ribs?
Ribs 1-7 (Direct connection with the sternum via their own costal cartilage
Which ribs are known as false ribs?
Ribs 8-12; 11-12 are known as ‘floating’ as they are unattached anteriorly
What are the 4 characteristics of the ‘typical’ rib? Ribs 2-10
Head
Neck
Tubercle
Shaft
Has 2 facets both superior and inferior that articulate with two vertebral bodies?
The Head
Its articular facet articulates with a TVP
Tubercle
Angle and Costal groove for the costal nerve
Shaft
How many costal facets are there on a typical vertebral body in the thoracic spine?
4; both superior and inferior
The superior costal facet articulates with the head of which rib?
Its corresponding rib. T4 = 4th Rib
The inferior costal facet articulates with the head of which rib?
The inferior rib. T4 = 5th Rib
Which are the atypical ribs?
1,11,12 as they only articulate with one vertebral body
This rib is the shortest, broadest and most curved and has a scalene tubercle
Rib 1
Which are floating ribs with no neck or tubercle
11 & 12
Which are the typical ribs that articulate with numerically corresponding vertebral body; IVD; and vertebra above?
Ribs 2-10
Which are the atypical ribs not connected to a disc and articulate with the corresponding vertebral body only?
Ribs 1,11,12 (Rib 1 however articulates with corresponding TVP
Which are typical vertebral bodies that have 2 facets for articulation with 2 different ribs?
T 2 - 9
Which are the atypical vertebral bodies?
T 1,10,11,12
T1 has complete superior facet and demi-facet inferiorly
T10-12 have only one facet surface on each side
Which region of the spine will you find an oblique facet orientation?
Cervical Spine
Which region of the spine will you find SP’s that points down and facet orientation in the frontal plane?
Thoracic Spine
Which part of the spine will you find large SP’s projecting horizontally with facet orientation in the sagittal plane?
Lumbar Spine
The superior angle is a landmark for
T2
The root of the spine of the scapula landmarks
T3
The inferior angle landmarks
Rib 7
