Cranial bones

Question 1

What forms the anterior cranium, superior orbit, and anterior cranial fossa?

Answer 1

Frontal bone

Question 2

What is the smooth area between the eyes called?

Answer 2

Glabella

Question 3

What are the two small holes on the anterior ridge of the orbit known as?

Answer 3

Supraorbital foramina

Question 4

What is the anterior ridge of the orbit referred to as?

Answer 4

Supraorbital margin

Question 5

What are the paranasal sinuses located in the frontal bone called?

Answer 5

Frontal sinuses

Question 6

What bones form the superior and lateral walls of the cranium?

Answer 6

Parietal bones

Question 7

What is the name of the suture located at the midline that meets the left and right parietal bones?

Answer 7

Sagittal suture

Question 8

Which suture is located anteriorly and meets the frontal bone and parietal bones?

Answer 8

Coronal suture

Question 9

What is the name of the posterior suture that meets the occipital bone and parietal bones?

Answer 9

Lambdoid suture

Question 10

What suture is lateral and meets the temporal bones and parietal bones?

Answer 10

Squamous suture

Question 11

What is the anterolateral junction point of the skull called?

Answer 11

Pterion

Question 12

Which bones are involved in the Pterion?

Answer 12

• Frontal
• Temporal
• Parietal
• Sphenoid

Question 13

What is the posterolateral junction point of the skull known as?

Answer 13

Asterion

Question 14

Which bones are involved in the Asterion?

Answer 14

• Temporal
• Occipital
• Parietal

Question 15

What are the two paired bones that form the lateral walls of the cranium called?

Answer 15

Temporal bones

Question 16

What is the flat scale-like region of the temporal bone known as?

Answer 16

Squamous region

Question 17

What projection forms the posterior part of the zygomatic arch?

Answer 17

Zygomatic process

Question 18

What indentation forms the temporomandibular joint?

Answer 18

Mandibular fossa

Question 19

What is the opening to the external auditory canal called?

Answer 19

External acoustic meatus

Question 20

What is the needle-like projection that serves as an attachment point for a neck muscle?

Answer 20

Styloid process

Question 21

What region of the temporal bone is posterior to the tympanic region?

Answer 21

Mastoid region

Question 22

What is the round bony projection that serves as an attachment site for neck muscles?

Answer 22

Mastoid process

Question 23

What are the numerous paranasal sinuses in the mastoid region called?

Answer 23

Mastoid air cells (mastoid sinuses)

Question 24

What is the shallow groove medial to the mastoid process known as?

Answer 24

Mastoid notch

Question 25

What is the large hole that allows the spinal cord to pass through the occipital bone?

Answer 25

Foramen magnum

Question 26

What forms the atlanto-occipital joint?

Answer 26

Occipital condyles

Question 27

What is the anterolateral edge of each occipital condyle called?

Answer 27

Hypoglossal canal

Question 28

What are the two parallel horizontal ridges found on the occipital bone?

Answer 28

Superior and inferior nuchal lines

Question 29

What is the midline projection between the superior and inferior nuchal lines?

Answer 29

External occipital protuberance

Question 30

What is the butterfly-shaped bone that is referred to as the keystone bone?

Answer 30

Sphenoid bone

Question 31

What are the two medial passageways on the superior surface of the sphenoid bone?

Answer 31

Optic canals

Question 32

What is the paranasal sinus in the sphenoid bone that helps lighten the skull?

Answer 32

Sphenoid sinus

Question 33

What is the saddle-shaped structure composed of three distinct parts in the sphenoid bone?

Answer 33

Sella turcica

Question 34

What forms the thin raised anterior boundary of the sella turcica?

Answer 34

Tuberculum sellae

Question 35

What houses the hypophysis/pituitary gland within the sella turcica?

Answer 35

Hypophyseal fossa

Question 36

What is the thicker posterior boundary of the sella turcica called?

Answer 36

Dorsum sellae

Question 37

What are the smaller, superior, anterior parts of the sphenoid bone?

Answer 37

Lesser wings

Question 38

What are the larger, inferior, posterior parts of the sphenoid bone?

Answer 38

Greater wings

Question 39

What is the narrow slit between the greater and lesser wings of the sphenoid bone?

Answer 39

Superior orbital fissure

Question 40

What foramina are contained in the greater wing of the sphenoid bone?

Answer 40

* Foramen rotundum * Foramen ovale * Foramen spinosum

Question 41

What forms part of the posterior walls of the nasal and oral cavities?

Answer 41

Medial and lateral pterygoid plate

Question 42

What bone is anterior to the sphenoid and contributes to the medial wall of the orbit?

Answer 42

Ethmoid bone

Question 43

What forms the roof of the nasal cavity and part of the anterior floor of the cranial cavity?

Answer 43

Cribriform plate

Question 44

What is the vertical bony projection from the midline of the cribriform plate called?

Answer 44

Crista galli

Question 45

What contributes to the medial wall of the orbits and contains ethmoid sinuses?

Answer 45

Lateral masses

Question 46

What are the two lateral masses that extend medially into the nasal cavity called?

Answer 46

Superior and middle nasal conchae

Question 47

What is the small and hard-to-visualize nasal conchae?

Answer 47

Superior nasal conchae

Question 48

What is the drop shape lateral to the perpendicular plate of the ethmoid bone?

Answer 48

Middle nasal conchae

Question 49

What forms the superior part of the bony nasal septum?

Answer 49

Perpendicular plate