The irregularly thin plate that forms part of the medial wall of the orbit behind the frontal process of the maxilla. [ https://www.worldcat.org/search?q=bn%3A0-683-40008-8 MP:0005271 ]
Synonyms: lachrymal bone lacrymal bone
Term information
- NCIT:C32906
- SCTID:272675007
- FMA:52741
- MA:0001486
- VHOG:0001149
- Wikipedia:Lacrimal_bone
- UMLS:C0222733 (ncithesaurus:Lacrimal_Bone)
uberon_slim, pheno_slim, vertebrate_core, human_reference_atlas
lachrymal bone - infraorbital 1
os lacrimale
lacrymal bone - infraorbital 1
infraorbital 1
lacrimal - infraorbital 1
The infraorbital bone 1 of actinopterygians is homologous with the lacrimal bone (...).[well established][VHOG]
In early lobe-finned fishes and ancestral tetrapods, the lacrimal bone is a relatively large and robust bone, running from the orbit to the nostrils. It forms part of the side of the face, between the nasal bones and the maxilla. In primitive forms, it is often accompanied by a much smaller septomaxilla bone, lying immediately behind the nasal opening, but this is lost in most modern species. The lacrimal bone is often smaller in living vertebrates, and is no longer always directly associated with the nasal opening, although it retains its connection with the orbit. The bone is entirely absent in living amphibians, as well as some reptilian species[ISBN 0-03-910284-X]
Term relations
- lateral structure
- skeletal element of eye region
- dermal bone
- irregular bone
- facial bone
- part of some preorbital bone region
- overlaps some orbit of skull
- contributes to morphology of some facial skeleton
- in lateral side of some facial skeleton
- part of some dermatocranium