this chapter.) In a suture, the serrated, or sawtooth,
edges of adjacent bones fit into each other. These
interlocking projections prevent sliding or shifting of
the bones if the skull is subjected to a blow or pres-
sure. In Fig. 6–5 you can see the coronal suture
between the frontal and parietal bones, the squamosal
suture between the parietal and temporal bones, and
the lambdoidal suture between the occipital and pari-
etal bones. Not visible is the sagittal suture, where the
two parietal bones articulate along the midline of the
top of the skull. All the bones of the skull, as well as
the large sutures, are shown in Figs. 6–5 through 6–8.
Their anatomically important parts are described in
Table 6–2.114 The Skeletal System
PhalangesPhalangesTarsals
MetatarsalsHumerusRadius
UlnaCarpals
MetacarpalsMaxillaMandibleSkull (cranium)SternumClavicle
ScapulaSacrumZygomatic archCervical vertebraeThoracic vertebraeRibsLumbar vertebraeIliumCoccyxPubis
IschiumFemurPatellaTibia
FibulaFigure 6–4. Skeleton. Anterior
view.
QUESTION:Which of the bones
shown here would be classified
as irregular bones?