Posterior ethmoidal canal

Posterior ethmoidal foramen
Base of the skull. Upper surface. (On the left, "Posterior ethmoidal foramen" is the 9thlabel from the right.
1 Foramen ethmoidale, 2 Canalis opticus, 3 Fissura orbitalis superior, 4 Fossa sacci lacrimalis, 5 Sulcus infraorbitalis, 6 Fissura orbitalis inferior, 7 Foramen infraorbitale
Details
Identifiers
Latin	foramen ethmoidale posterius
Dorlands /Elsevier	f_12/12373046
TA	A02.1.00.080
FMA	53136
Anatomical terms of bone []

Lateral to either olfactory groove are the internal openings of the anterior and posterior ethmoidal foramina (or canals).

The posterior ethmoidal foramen opens at the back part of this margin under cover of the projecting lamina of the sphenoid, and transmits the posterior ethmoidal vessels and nerve.

Frontal bone. Inner surface.

Left maxillary sinus opened from the exterior.

The ophthalmic artery and its branches.

Labeled photo of foramina of skull base.