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

Click here to view publicly accessible slides and webcasts from the FaceBase Phase 2 Final Recap webinar.

FishFace

8 dpf Development

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

Please hold mouse over images to see annotations.

8 dpf
zc81Tg
Alizarin red
Lateral
Description By 192 hpf, a morphological change is becoming obvious, whereby the ventral symplectic region of the hyosymplectic (hs), which consists of mostly a single layer of chondrocytes, increasingly shifts to a right angle with respect to the dorsal hyomandibular region of the hyosymplectic, with the articulation of the interhyal (ih) as the fulcrum of this angle. The hyomandibula (hm) bone has extended both dorsally and ventrally from the facial nerve (VII) foramen (ff) in the perichondrium of the hyomandibular region. While overlapped by the developing quadrate (q), initiation of the symplectic (sy) bone can be observed in the perichondrium of the symplectic region.