The Thoracic Cage Flashcards
what is the thoracic cage
structure that surrounds and protects the heart, lungs, and some of the abdominal organs
how many pairs of ribs
12
what is the jugular/sternal notch?
the notch of the maubrium
what are clavicular notches
articular facets of the sternal notch where the manubrium articulates with the clavicle
the angle of louis is a landmark for what rib?
rib 2
what is the angle of louis
the manubriosternal joint/sternal angle
what are costal notches
structures along the side of the body of the sternum for the articulation of costal cartilage
what is the xyphoid process
the thin process of the sternum inferior to the body
which ribs are the “true” ribs
1-7
which ribs are the false ribs
8-12
which ribs have a direct connection with the sternum via their own costal cartilage?
the true ribs (1-7)
which ribs have an indirect connection with the sternum
ribs 8-10
which ribs are not attached anteriorly?
11 and 12
how do the false ribs connect to the sternum
via the 7th rib costal cartilage
what is the name for the ribs that are unattached anteriorly?
floating ribs
which ribs are “typical”
2-10
what characteristics make a typical rib
head, neck, tubercle, shaft
what constitutes a typical rib head
rib structure with 2 facets (superior and inferior) that articulate with 2 vertebral bodies
what is the neck of a rib
rib structure between the head and the tubercle
what is a rib tubercule
articular facet that articulates with a TVP
what portion of the rib has an angle and a costal groove for the costal nerve
shaft
what is the longest rib
7
which ribs are atypical
1, 11, 12
which ribs articulate with only 1 vertebral body
the atypical ribs (1, 11, 12)
how does a rib shaft project from the vertibrae
posteriorly, inferiorly, and laterally until it gets to the rib angle, then curves anteriorly
what part of the rib marks the greatest change in its curvature
the rib angle
what are the costal facets
structures on the vertebral bodies which articulate with the heads of ribs
how are typical ribs numbered in relation to vertebral bodies?
superior costal facet articulates with the head of the rib of the same number
the articular facet on the tubercle of a typical rib articulates with what on the corresponding vertebral body?
transverse costal facet
how do the transverse costal facet-articular facet relationship correlate with typical rib/vertebra number
they are the same
what is the scalene tubercle
structure of rib 1 where the anterior scalene muscle attaches
the grooves for the subclavian artery and vein are located on which rib?
rib 1
what are demi-facets
the facets on vertebral bodies with which typical ribs articulate
what do atypical ribs articulate with on vertibrae?
complete facets
what is the broadest and most curved rib?
rib 1
what rib does not have a rib angle?
rib 1
where is the groove for the subclavian vein and artery
rib 1
structure for blood vessels on rib 1
groove for subclavian vein and artery
what is thoracic outlet syndrome
compression of the subclavian artery, vein, and brachial plexus
which ribs are floating ribs
11 and 12
what rib so not articulate with a transverse process
11 and 12
what is a landmark for rib 2
superior angle of the scapula
what is the landmark for rib 3
root of the spine of the scapula
what is a landmark for rib 7
the inferior angle of the scapula
