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The Thoracic Wall

Bones of Thorax and organization of musculature, blood supply, and innervation

QuestionAnswer
Describe the major lines of orientation of the Thorax (2) 1) Mid-clavicular line: imaginary line running vertically from the midpoint of the clavicle 2) Mid-axillary line: imaginary line running vertically downward from the mid-axilla
List the three bones of the Sternum Manubrium, body, xiphoid process
At what thoracic vertebrae level does the manubrium lie? level of the 3rd and 4th thoracic vertebrae
What is the name of the upper border of the manubrium? Jugular (suprasternal) notch
What bones does the manubrium articulate with? Clavicles, the first and upper part of the 2nd rib, the body of the sternum, and the 2nd rib.
What is the articulation between the manubrium and the sternal body called? Manubriosternal joint or the sternal angle of Louis
What are the thoracic vertebral levels of the body of the sternum? 5 through 9
What ribs articulate with the body of the sternum? 2 through 7
What special landmark joint does the anterior part of rib 7 articulate with? xiphosternal joint
What vertebral level does the Xiphoid lie in? 10th thoracic vertebrae
What # ribs are the true ribs? Upper 7 (1-7)
What cartilage attaches true ribs to the sternum? Coastal cartilages
Which # ribs are false ribs? Ribs 8-12
What are ribs 8,9,10 called? What distinguishes them from the other ribs? Vertebrochondral ribs (attach to each other and to rib 7 via coastal cartilages)--connect to sternum indirectly
Which are the free/floating ribs? Why are they called that? Ribs 11 and 12; they do not have any anterior attachaments
What ribs are the typical ribs? Ribs 3-9
Name the 5 major anatomical parts of the typical ribs? Head, tubercle, neck, coastal groove, angle
How many facets in the head articulate with the vertebral body? Two facets
Which thoracic vertebrae does rib 7 articulate with? 8th? Nth? 7 and 6th; 8th and 7th; N and N-1
What vertebral process does the tubercle articulate with? The transverse process
Where is the neck of a rib located? Between the head and the tubercle
What three structures are located in the coastal groove? (superior to inferior) Intercostal vein Intercostal artery Intercostal nerve
Created by: karkis77
 

 



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