sphenoidal sinus in dogs

One of the paired paranasal sinuses, located in the body of the sphenoid bone and communicating with the highest meatus of the nasal cavity on the same side[MESH]. The sphenoidal sinuses (or sphenoid) contained within the body of the sphenoid vary in size and shape; owing to the lateral displacement of the intervening septum they are rarely symmetrical. The following are their average measurements: vertical height, 2.2 cm. ; transverse breadth, 2 cm. ; antero-posterior depth, 2.2 cm. [WP,unvetted]. Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the sphenoidal sinus is

One of the paired paranasal sinuses, located in the body of the sphenoid bone and communicating with the highest meatus of the nasal cavity on the same side[MESH]. The sphenoidal sinuses (or sphenoid) contained within the body of the sphenoid vary in size and shape; owing to the lateral displacement of the intervening septum they are rarely symmetrical. The following are their average measurements: vertical height, 2.2 cm. ; transverse breadth, 2 cm. ; antero-posterior depth, 2.2 cm. [WP,unvetted]. The atlas records it as a cavity at the organ scale in the dog.

Where the sphenoidal sinus is

It sits in the head, within the skeletal and respiratory systems. 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 sphenoidal sinus connects to

The atlas records 7 typed relationships for it, across 2 kinds of connection. part of basicranium, chondrocranium and sphenoid bone.

Supply and innervation

This dataset asserts no arterial supply, venous drainage or innervation for the sphenoidal sinus. 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 sphenoid sinus and sinus sphenoidalis. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0001724, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

Part of: basicranium, chondrocranium and sphenoid bone.
A kind of: endochondral bone, facial bone, neurocranium bone and paranasal sinus.

Questions

Where is the sphenoidal sinus?

What does the sphenoidal sinus connect to?

Part of: basicranium, chondrocranium and sphenoid bone.

Is the sphenoidal sinus the same in other species?

This page describes the dog. The human record of the same structure sits beside it on /compare, over one shared model rather than two atlases built separately.