olfactory placode

A thick plate of cells derived from the neural ectoderm in the head region of the embryo that develops into the olfactory region of the nasal cavity. Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the olfactory placode is

A thick plate of cells derived from the neural ectoderm in the head region of the embryo that develops into the olfactory region of the nasal cavity. The atlas records it as a region at the region scale in the human body.

Where the olfactory placode is

It sits in the head. Not positioned individually. Drawn inside the structure this dataset says contains it — the containment is asserted, the exact spot within it is not.

What the olfactory placode connects to

The atlas records 13 typed relationships for it, across 4 kinds of connection. part of craniocervical region, ectoderm and embryo, and 2 more.

Supply and innervation

This dataset asserts no arterial supply, venous drainage or innervation for the olfactory placode. Only a minority of structures carry those edges here, so an empty answer means nothing has been recorded — not that there is nothing to record.

Also called

Also recorded as olfactory placodes, placoda nasalis, placoda olfactoria, nasal I placode and nasal placode. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0003050, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• Part of: craniocervical region, ectoderm, embryo, external ectoderm and head.
• A kind of: embryonic structure and primordium.
• develops into: nose, olfactory epithelium, olfactory nerve, olfactory pit and vomeronasal organ.
• Develops from: neuroectoderm.

Questions

Where is the olfactory placode?

It sits in the head. Not positioned individually. Drawn inside the structure this dataset says contains it — the containment is asserted, the exact spot within it is not.

What does the olfactory placode connect to?

Part of: craniocervical region, ectoderm, embryo, external ectoderm and head.

Is the olfactory placode the same in other species?

Leumas holds the same relationship vocabulary for every species it carries, so where another dataset records this structure you can put the two side by side on /compare.