Cranial III Flashcards
what do the midline bones do during the inhalation phase?
flexion
what do the midline bones do during the exhalation phase?
extension
what do the paired bones do during the inhalation phase?
external rotation
what do the paired bones do during the exhalation phase?
internal rotation
what does the AP diameter do during the inhalation phase?
shortens
what does the AP diameter do during the exhalation phase?
lengthens
what does the transverse diameter do during the inhalation phase?
widen
what does the transverse diameter do during the exhalation phase?
narrows
what does the foramen magnum do during the inhalation phase?
elevate
what does the foramen magnum do during the exhalation phase?
descend
what does the SBS do during the inhalation phase?
arc approximates / rises (sharper angle)
what does the SBS do during the exhalation phase?
arc separates / drops (flatter angle)
what does the sacrum base do during the inhalation phase?
backward / posterior
what does the sacrum base do during the exhalation phase?
forward / anterior
what does the apex (coccyx) do during the inhalation phase?
forward / anterior
what does the apex (coccyx) do during the exhalation phase?
backward / posterior
flexion / extension is named by the _____________
sphenobasilar angle
what is the axis for flexion / extension?
2 transverse
what is the direction for flexion / extension?
opposite
torsion is named by the ______________
superior great wing of the sphenoid
what is the axis for torsion?
1 AP