Chapter 7: Ribs and Sternum
body
longest part of sternum and forms its bulk
shaft
longest portion of rib
tubercle
nodule or slight elevation from surface of bone that allows attachment of tendon or ligament; articulate with transverse process; ribs 1-10
costal notches
represent articulations for the first ribs' costal cartilages
true ribs
ribs 1-7; articulate individually with to sternum by costal
false ribs
ribs 8-12 do not directly attach to the sternum
costal cartilage
cartilaginous extensions
head (capitulum)
at vertebral end of rib; rounded end
ribs
elongated, curved, flat bones that articulate each thoracic vertebrae; everyone has 12 pairs
sternum (breastbone)
flat bone; forms anterior midline of thoracic wall
sternal foramen
hole in the sternum
floating ribs
last two pairs of ribs; no connection to sternum
xiphoid process
very tip of sternum
manubrium
widest and most superior portion of sternum