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