Regions of the Skull

Question 1

Occipital bone

Answer 1

The bone which forms the rear base of the skull

Question 2

Temporal bones

Answer 2

The bones which are situated on each side of the skull; further subdivided into the following regions:
squamous
mastoid
petrous
tympanic

Question 3

Parietal bones

Answer 3

The two large, interlocking bones which make up a portion of the roof and sides of the skull

Question 4

Sphenoid bone

Answer 4

The bone which is toward the front of the skull and forms the rear of the orbit; further subdivided into the following regions:
body of the bone
two greater wings
two lesser wings
the pterygoid processes

Question 5

Ethmoid bone

Answer 5

The bone which is located at the roof of the nose and between the two orbits, separates the nasal cavity from the brain

Question 6

Frontal bone

Answer 6

The bone which forms the upper front of the skull; further subdivided into the following regions:
squamous
orbital
nasal

Question 7

Cranial bones

Answer 7

The set of bones which serve to protect the brain & brain stem and comprise the larger portion of the skull

Question 8

Zygomatic bones

Answer 8

The bones which form the cheeks and comprise part of the orbits

Question 9

Lacrimal bones

Answer 9

The bones which form the medial wall of the orbits

Question 10

Nasal bones

Answer 10

The two slender bones which are fused to form the bridge of the nose

Question 11

Maxilla bones

Answer 11

The bones which are fused to form the upper jaw

Question 12

Palatine bones

Answer 12

The bones which are located at the back of the nasal cavity and form the roof of the mouth & floor of the orbits

Question 13

Mandible

Answer 13

The bone which forms the lower jaw

Question 14

Vomer

Answer 14

The small, thin bone which separates the right and left nasal cavities

Question 15

Orbits

Answer 15

The cavity in which the eyes and its appendages are situated

Question 16

Facial bones

Answer 16

The bones which form the facial area of the skull

Question 17

Foramen/Foramina

Answer 17

Opening(s) inside the body which allow structures to connect to one another

Question 18

Supraorbital foramen

Answer 18

The foramen which is located in the frontal bone and allows passage of the supraorbital vein, artery, and nerve into the orbit

Question 19

Optic foramen

Answer 19

The foramen which is located in the sphenoid bone and allows passage of the ophthalmic after and nerve from the optical canal into the orbit

Question 20

Foramen magnum

Answer 20

The foramen which is located in the occipital bone and allows the passage of the spinal & vertebral arteries and the spinal cord to pass from the skull into the vertebral column

Question 21

Foramina of cribriform plate

Answer 21

The foramina which are located in the ethmoid bone and allow the passage of the olfactory nerve

Question 22

Foramen rotundum

Answer 22

The foramen which is located in the sphenoid bone and allows passage of the maxillary nerve

Question 23

Suture

Answer 23

A type of fibrous joint (synarthrosis) which only occurs in the skull and is what “holds” the bones in place; there are 18 sutures

Question 24

Paranasal sinuses

Answer 24

A group of four, paired, air-filled spaces on each side of the midline of the face; they are named for the bones behind which the sit:
Frontal
Ethmoid
Sphenoid
Maxillary