lateral ethmoid

Term ID

ZFA:0000226

Synonyms

• lateral ethmoids

Definition

Large, paired cartilage bones separating the olfactory region from the orbit. Arises from both perichondral and endochondral ossifications (Harrington 1955). Bordered by the mesethmoid anteriorly and overlain by the frontal dorsally, each lateral ethmoid extends medially to meet its fellow posteriorly along the midline. Develops from the laminae orbitonasales.

Appears at

Larval:Days 14-20 (14d-21d, 6.2mm, 10 teeth)

Evident until

Adult (90d-730d, breeding adult)

References

• TAO:0000226

Ontology

Anatomy Ontology