Skull

Question 1

What are the unpaired cranial bones?

Answer 1

Frontal

Occipital

Sphenoid

Ethmoid

Question 2

What are the unpaired facial bones?

Answer 2

Vomer

Mandible

Question 3

What is the clinical significance of the Pterion landmark on the skull?

Answer 3

Middle Meningeal A. lies just deep to it, can rupture if there is a blow to the side of the head

Question 4

What is a metopic suture?

Answer 4

Incomplete fusion of the frontal bones in the saggital plane

Question 5

What 2 bones meet at the Lambdoid suture?

Answer 5

Occipital bone and Parietal bone

Question 6

What 2 bones meet at the Squamosal suture?

Answer 6

Temporal bone and parietal bone

Question 7

Why would bone flaps be created during surgery?

Answer 7

Incorporating as much overlying tissue with the bone allows periosteium to heal the best

Question 8

What cranial bone contains the foramen rotundum, foramen ovale, and foramen spinosum?

Answer 8

Sphenoid B.

Question 9

What vessel is transmitted through the foramen spinosum?

Answer 9

Middle Meningeal A.

Question 10

What cranial bone does the pterygoid canal run through?

Answer 10

Sphenoid B.

Question 11

What is the attachment for the Falx Cerebri in the Ethmoid bone?

Answer 11

Crista Galli

Question 12

What bone forms the superior portion of the Nasal Septum?

Answer 12

Perpendicular plate of Ethmoid bone

Question 13

What bone is the cribiform plate located in?

Answer 13

Ethmoid B.

Question 14

What bone forms the inferior portion of the Nasal Septum?

Answer 14

Vomer B.

Question 15

What part of the Vomer B. articulates with the Sphenoid B.?

Answer 15

Ala

Question 16

What bone is part of the orbit, nasal cavity, and hard palate?

Answer 16

Palatine B.

Question 17

Cleft lip is a failure of what bones to fuse?

Answer 17

Palatine and Maxilla

Question 18

What structure in the maxilla separates the hard palate from the anterior nasal spine?

Answer 18

Incisive foramen

Question 19

What is the largest paranasal sinus in the skull?

Answer 19

Maxillary Sinus

Question 20

What does a Le Fort I fracture involve?

Answer 20

Fracture of the alveolar process

Question 21

What does a Le Fort II fracture involve?

Answer 21

Fracture of maxilla partially through the orbit and at the zygomaxillary suture

Question 22

What does a Le Fort III fracture involve?

Answer 22

Fracture dislocating upper face from the cranium (through the orbit)

Question 23

What bones comprise the nasal complex?

Answer 23

Frontal B.

Ethmoid B.

Sphenoid B. (Superior and middle nasal conchae)

Horizontal plate of palatine B.

Maxilla

Inferior nasal concha B.

Lacrimal B.

Nasal B.

Question 24

What bones form the roof of the orbit?

Answer 24

Lesser wing of sphenoid B.

Frontal B.

Question 25

What bones form the lateral wall of the orbit?

Answer 25

Frontal B. (zygomatic process) Sphenoid B. (Greater wing) Zygomatic B. (Orbital surface)

Question 26

What bones form the medial wall of the orbit?

Answer 26

Maxilla (frontal process) Lacrimal B. Ethmoid B. (Lateral mass)

Question 27

What bones form the floor of the orbit?

Answer 27

Palatine B. (Perpendicular plate) Maxilla (orbital surface) Zygomatic B.

Question 28

What bones form the orbit?

Answer 28

Frontal B. Sphenoid B. Zygomatic B. Maxilla Palatine B. Lacrimal B. Ethmoid B.

Question 29

What are the paranasal sinuses?

Answer 29

Frontal Sphenoid Ethmoid Maxillary

Question 30

What is the clinical significance of the Anterior Fontanelle of the fetal skull?

Answer 30

Largest fontanelle, can extract CSF