ETHMOID BONE

Question 1

Lies in the anterior part of the base of the
skull between orbits. Like the Sphenoid bone,
this bone is only partly visible because of the
adjacent bones.

Answer 1

ETHMOID BONE

Question 2

it fills in a small gap
between the orbital parts of the frontal bone.
It contains several small openings for the exit
of the Olfactory nerves (nerves of smell) from
the cranial cavity to the nasal cavities

Answer 2

Cribriform Plate

Question 3

– is a sharp flat pointed process
that extends up from the Cribriform plate in the
midline wherein the Falx Cerebri is attached to it.

Answer 3

Crista Galli

Question 4

is a thin, flat,
downward extension
from the cribriform
plate that forms a part
of the nasal septum.

Answer 4

Perpendicular Plate

Question 5

are many small
cavities in the
labyrinth on each
side. They lie between
the medial border of
the orbits and nasal
cavities.

Answer 5

Ethmoid Sinuses