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FishFace

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Arch 1 & 2 Development

• Pharyngeal development: Pre-skeletal
• Pharyngeal development: Skeletal

Element Development

• The palatoquadrate: associated bones and articulations
• Meckel’s cartilage: associated bones and articulations
• The hyosymplectic: associated bones and articulations
• The ceratohyal: associated bones and articulations
• The opercle: associated bones and articulations

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 Movie(s): 8 dpf lateral movie
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.