Ethmoid and Sphenoid

Question 1

Identify the structures, what bone is this?

Answer 1

Circled: crista galli
Line: Cribiform plate
of Ethmoid bone

Question 2

What bone is this? Label the numbered structures

Answer 2

Ethmoid Bone:
1 - Crista Galli
2 - Middle nasal concha
3 - Perpendicular plate

Question 3

What bone is this? Label the components:

Answer 3

Sphenoid Bone:
Top: Lesser wing
Bottom: Greater wing

Question 4

Name the indicated structures. What bone are they apart of?

Answer 4

Medial and Lateral Pterygoid plates: apart of the sphenoid bone

Question 5

What bone is this? Label the indicated structures

Answer 5

Sphenoid bone:
1 - Lesser wing
2 - Greater wing
3 - Medial pterygoid plate
4 - Lateral pterygoid plate

Question 6

Name the indicated structures:

Answer 6

1 - anterior clinoid process
2 - tuberculum sellae
3 - posterior clinoid process
4 - dorsum sellae
circled: hypophyseal fossa