5) Internal base of the skull and connections

Question 1

Internal base of the skull

Cribriform plate and foramina

→ From where (to where) does it go?

Answer 1

Nasal cavity (common nasal meatus)

Question 2

Internal base of the skull

Cribriform plate and foramina

→ From where (to where) does it go?

Answer 2

connection to the nasal cavity in the embryonic period

Question 3

Internal base of the skull

Optic canal

→ From where (to where) does it go?

Answer 3

Orbit

Question 4

Internal base of the skull

Superior orbital fissure

→ From where (to where) does it go?

Answer 4

Orbit

Question 5

Internal base of the skull

Foramen rotundum

→ From where (to where) does it go?

Answer 5

Pterygopalatine fossa

Question 6

Internal base of the skull

Foramen ovale

→ From where (to where) does it go?

Answer 6

External base of the skull

Question 7

Internal base of the skull

Foramen spinosum

→ From where (to where) does it go?

Answer 7

External base of the skull

Question 8

Internal base of the skull

Foramen lacerum - filled with cartilage (sphenopetrous synchondrosis)

→ From where (to where) does it go?

Answer 8

External base of the skull

Question 9

Internal base of the skull

Carotid canal

→ From where (to where) does it go?

Answer 9

External base of the skull

Question 10

Internal base of the skull

Hiatus for the canal of the greater petrosal nerve (opens on the anterior aspect of the pyramid)

→ From where (to where) does it go?

Answer 10

Facial canal (geniculum)

Question 11

Internal base of the skull

Hiatus for the canal of the lesser petrosal nerve (opens on the anterior aspect of the pyramid)

→ From where (to where) does it go?

Answer 11

Tympanic cavity

Question 12

Internal base of the skull

Petrosquamous fissure

→ From where (to where) does it go?

Answer 12

External base of the skull (infratemporal fossa)

Question 13

Internal base of the skull

sphenopetrosal fissure

→ From where (to where) does it go?

Answer 13

External base of the skull

Question 14

Internal base of the skull

Foramen magnum

→ From where (to where) does it go?

Answer 14

Vertebral canal

Question 15

Internal base of the skull

Internal acoustic meatus

→ From where (to where) does it go?

Answer 15

Ends with base or fundus of internal acoustic meatus:

Question 16

base or fundus of internal acoustic meatus

→ What are the 4 quadrants?

Answer 16

1) facial area (beginning of facial canal!) 2) cochlear area (spiral foraminous tract)
3) superior vestibular area
4) inferior vestibular area

Question 17

What are the 2 parts of jugular foramen?

Answer 17

a. Pars nervosa
b. Pars venosa

Question 18

Internal base of the skull

Jugular foramen

→ From where (to where) does it go?

Answer 18

External base of the skull

Question 19

Internal base of the skull

Hypoglossal canal

→ From where (to where) does it go?

Answer 19

External base of the skull

Question 20

Internal base of the skull

Condylar canal

→ From where (to where) does it go?

Answer 20

External base of the skull

Question 21

Internal base of the skull

Aquaeductus of vestibule
(Opens with the aperture of aquaeductus of vestibule on the posterior surface of the pyramid)

→ From where (to where) does it go?

Answer 21

Inner ear, vestibule

Question 22

Internal base of the skull

Mastoid foramen

→ From where (to where) does it go?

Answer 22

Outer aspect of the skull

Question 23

Internal base of the skull

Petrooccipital fissure

→ From where (to where) does it go?

Answer 23

External base of the skull