6020 MidTerm
The Head - ✔✔Skull is a rigid bony box which house & protects the brain & special sense organs
14 facial bones
Cranium is supported by cervical vertebrae
C1 is the atlas
C2 is the axis
C7 vertebra: vertebre prominents
Human face appearances & expressions ("the mood tellers") are formed by facial muscles which are
mediated by CN VII (facial nerve)
Facial sensations of pain or touch are mediated by the 3 sensory branches of CN V (trigeminal nerve)
Cranial bones - ✔✔walls of the skull): frontal, parietal, occipital, & temporal
Adjacent cranial bones unite at meshed immovable joints named "sutures"
Coronal suture - ✔✔crown" from ear to ear at the union of frontal & parietal bones
Sagittal suture - ✔✔separates the head lengthwise between the 2 parietal bones
Lambdoid suture - ✔✔separates parietal bones crosswise from the occipital bone
confluence points of the cranial sutures - ✔✔form the anterior, posterior, anterolateral (sphenoid), and
posterolateral (mastoid) fontanelles
The fontanelles - ✔✔close sequentially and the sutures function as growth centers.
metopic suture - ✔✔fuses by 8 months of age in nearly all children. The remaining sutures fuse late in
life.Virchow's law - ✔✔states that premature suture fusion results in compensatory skull growth parallel
to
the fused suture and a decreased growth perpendicular to the suture.
The Head - ✔✔Skull is a rigid bony box which house & protects the brain & special sense organs
14 facial bones
Cranium is supported by cervical vertebrae
C1 is the atlas
C2 is the axis
C7 vertebra: vertebre prominents
Human face appearances & expressions ("the mood tellers") are formed by facial muscles which are
mediated by CN VII (facial nerve)
Facial sensations of pain or touch are mediated by the 3 sensory branches of CN V (trigeminal nerve)
Cranial bones - ✔✔walls of the skull): frontal, parietal, occipital, & temporal
Adjacent cranial bones unite at meshed immovable joints named "sutures"
Coronal suture - ✔✔crown" from ear to ear at the union of frontal & parietal bones
Sagittal suture - ✔✔separates the head lengthwise between the 2 parietal bones
Lambdoid suture - ✔✔separates parietal bones crosswise from the occipital bone
confluence points of the cranial sutures - ✔✔form the anterior, posterior, anterolateral (sphenoid), and
posterolateral (mastoid) fontanelles
The fontanelles - ✔✔close sequentially and the sutures function as growth centers.
metopic suture - ✔✔fuses by 8 months of age in nearly all children. The remaining sutures fuse late in
life.Virchow's law - ✔✔states that premature suture fusion results in compensatory skull growth parallel
to
the fused suture and a decreased growth perpendicular to the suture.
