For full functionality of this site it is necessary to enable JavaScript. Here are the instructions how to enable JavaScript in your web browser.

FishFace

10 dpf Development

[ Back to The ceratohyal: associated bones and articulations]
Info Image

Please hold mouse over images to see annotations.

10 dpf
zc81Tg
Alizarin red
Ventral
Lateral
Description

By 249 hpf, the overall morphology of the ceratohyal (ch) appears like a dumbbell from the lateral view, with a thicker posterior end. The ceratohyal articulates with the interhyal (ih) along the dorso-posterior edge of the ceratohyal, with the basihyal (bh) dorsally and the contralateral ceratohyal medially at the anterior midline, and with branchiostegal rays 2 and 3 (bsr2, bsr3) along the postero-lateral aspect of the ceratohyal. Also, branchiostegal ray 1 (bsr1) articulates with the medial side of the ceratohyal bone (chb), which has grown in size along the anterior-posterior aspect of the ceratohyal perichondrium. The ventral hypohyal (hhv) has spread dorsally and posteriorly in the perichondrium at the ventro-anterior tip of the ceratohyal.