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Fig. 9. Antero-posterior, dorso-ventral and medio-lateral dimensions of the
odontophore during biting versus swallowing. Measurements were made
after the anterior border of I6 had been rotated so that it was vertical.
Averaged antero-posterior (A) and dorso-ventral (C) odontophore length
normalized to cycle time; black lines are for biting, gray lines are for
swallowing. (B,D) Schematic diagrams of lengths measured. (E) Medio-lateral
half-widths in biting versus swallowing estimated from the kinematic
model. A schematic medio-lateral view of the odontophore is shown in
Fig. 2C. The half-width is
reported, since this is likely to approximate the medio-lateral extent of the
horseshoe-shaped I4 muscle (each half of which underlies the radula). Values
in A, C and E are means (solid lines) ± 1 s.d. (broken lines).
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