Skull 2

Question 1

What are the 3 bones that compose of the cranial roof (calvarium)?

Answer 1

1. The frontal bone
2. The parietal bones
3. The occipital bone

Question 2

What are the 6 bones that compose of the cranial base?

Answer 2

1. The frontal bone
2. The ethmoid bone
3. The sphenoid bone
4. The temporal bones
5. The parietal bones
6. The occipital bone

Question 3

What are the 8 main features of the anterior view of the FRONTAL BONE?

Answer 3

1. Squamous part (squama)
2. Superciliary artery
3. Orbital plate
4. Supraorbital foramen
5. Frontal notch
6. Nasal spine
7. Zygomatic process
8. Ethmoidal notch

Question 4

What are the 6 main features of the posterior view of the FRONTAL BONE?

Answer 4

1. Orbital plates
2. Ethmoidal notch
3. Foramen cecum
4. Frontal crest
5. Sagittal sulcus
6. Zygomatic process

Question 5

What are the 8 main features of the ETHMOID BONE?

Answer 5

1. Perpendicular plate
2. Crist galli
3. Cribriform plate
4. Ethmoidal labyrinth (left and right)
5. Orbital plate
6. Superior nasal concha
7. Middle nasal concha
8. Uncinate process

Question 6

What is olfactory nerve damage?

Answer 6

Anosmia (loss of sense of smell)

Question 7

What is the result of a fracture of the labyrinth?

Answer 7

CSF Rhinorrhea

Question 8

What are the 6 main features of the superior view of the SPHENOID BONE?

Answer 8

1. Greater wing
2. Lesser wing
3. Body and sinus
4. Sella turcica and tubercular sellae
5. Clinoid processes (anterior and posterior)
6. Pterygoid plates and processes

Question 9

What are the 6 main foramen, fissures, and grooves of the anterior view of the SPHENOID BONE?

Answer 9

1. Optic canal
2. Formane rotundum
3. Formane ovale
4. Foramen spinosum
5. SUperior orbital fissure
6. Pterygoid canal

Question 10

What does the sphenoid bone do for stability in the skull?

Answer 10

Articulates with all other cranial bones, providing considerable stability to the skull

Question 11

What complex shape does the sphenoid bone resemble?

Answer 11

A butterfly