Anatomy of the Sphenoid and Ethmoid Bones

These flashcards cover key concepts related to the anatomy of the sphenoid and ethmoid bones based on the lecture.

Sphenoid Bone

A bone that resembles a bat and is located at the base of the skull.

Greater Wings

The large projections on the sphenoid bone that resemble the wings of a bat.

Lesser Wings

The smaller ridges found on the sphenoid bone, located anteriorly.

Optic Foramen

The opening in the sphenoid bone through which the optic nerve passes.

Sella Turcica

A depression in the sphenoid bone where the pituitary gland rests.

Sphenoid Sinus

A sinus located within the sphenoid bone.

Cribriform Plate

A flat part of the ethmoid bone with tiny holes for olfactory nerves.

Crista Galli

A projection of the ethmoid bone that helps support the brain.

Perpendicular Plate

A bone in the nasal cavity that divides it into left and right halves.

Ethmoid Sinus

A sinus located within the ethmoid bone, near the nose.