Chest and Pleura Flashcards
Which ribs are true
1-7
Which ribs are false
8-12
Which ribs are floating
11-12
Where does Rib 1 articulate
The manubrium
Where does rib 2 articulate
The sternal angle
Where does 3-7 articulate
the body of the sternum
What is the costal margin
The arch formed by ribs 7-10
What s the costal cartiladge
The cartilage that connects the ribs and the sternum
Manubrium
handle of sternum
curved upper edge is jugular or suprasternal notch
Sternal Body
Crosses vertebral levels T5-9
Xiphoid Process
Located at vertebral level T10
Sternal Angle
Junction of manubrium and body
Articulates the 2nd Rib
Suprasternal notch
Curved upper edge of manubrium
Jugular notch
Sternoclavicular joint
Clavicle and sternum meet
What Landmarks are at the sternal angle?
Division of superior and inferior mediastinum
Superior limit of pericardium
Beginning and ending of the arch of aorta
Origin of pulmunary arteries from pulmunary trunk
formation of superior vena cava
Bifurcation of the trachea
Superior thoracic aperture
thoracic inlet
cavity that allows communication of neck and upper extremity
Superior thoracic aperture boundaries
posterior: T1
Laterally: 1st Ribs
Anterior: by superior border of manubrium
Superior thoracic aperture Contents
Trachea, esophagus, blood vessels, and nerves
Inferior Thoracic Aperture
Covered by diaphragm
openings for aorta, esophagus, and inferior vena cava
Internal thoracic artery and vein
Course near sternum
Supplies anterior intercostal arteries
Drain into the brachiocephalic veins
External Intercostal muscle
“hands in pockets”
outer intercostal muscle
Internal Intercostal Muscles
Runs perpendicular to external intercostal
Innermost Intercostal Muscle
Similar to internal intercostal muscles
Intercostal nerve
11 pairs (12th is subcostal) Contain motor, sensory, and autonomic fibers