Anatomy: Skull

1. True or False: The sphenoid is an irregular shaped cranial bone that resembles a bat. It articulates with some of the other cranial bones.
5. All joints in the skull are called___________, EXCEPT for the temporomandibular joint (TMJ).
7. The _________is a junction between the lambdoidal & sagittal sutures. In infants, it is called the posterior fontanel.
8. The ___________suture is between the parietal bones & behind the coronal suture.
11. Infant bones are thin and have __________, which are areas of incomplete ossification.
13. A skull is usually full size by the age of ___________ years old.
16. There are _____ facial bones.
17. The ___________bone is not really a skull bone.
21. The vertical portion of the ethmoid bone includes the _______ plate.

1. _________________sinuses are irregular shaped cavities on the frontal bone
2. The average size is about ______" wide between the parietal bones.
3. The _________ plate articulates with the ethmoidal notch of the frontal bone.
4. There are ________ cranial bones.
6. Cranial vault are bones with 2 compact layers with a spongy layer in between called ___________.
9. Bregma is a junction of the coronal and sagittal sutures. In infants, it's called the _________ fontanel.
10. The ________bone is a small, cube-shaped bone in the skull.
12. _______________ foramen are holes in the margins above the orbits in frontal bone for vessels, nerves, etc.
14. Parietal ______________is the widest portion of the parietal bone.
15. The ethmoid bone articulates with the frontal and __________ bones.
18. Cranial bones in the floor: ethmoid, __________, right temporal, and left temporal
19. The superior and middle nasal ______ are scroll-shaped processes projecting off of each medial labyrinth wall on ethmoidal bone.
20. The ________is a smooth area between the supercilliary arches.