Cranial Fossae and Cranial Nerves

Question 1

What goes through the carotid canal?

Answer 1

Internal carotid artery

Question 2

What goes through the foramen spinosum?

Answer 2

Middle meningeal artery

Question 3

What is an outgrowth of the telencephalon?

Answer 3

CN I olfactory

Question 4

Where does the olfactory mucosa go through?

Answer 4

Cribriform plate to synapse in olfactory bulb

Question 5

Where do the olfactory tracts go to?

Answer 5

Prepiriform area of amygdala (primary olfactory cortex)

Question 6

What is the only sensory system that is not relayed through thalamus?

Answer 6

CN I olfactory

Question 7

What is an extension of the diencephalon?

Answer 7

CN II Optic

Question 8

Where is the CN II optic from?

Answer 8

The retina through the optic canal, forms chiasm then optic tracts

Question 9

What runs in the lateral wall of cavernous dural venous sinus?

Answer 9

CN III Oculomotor, CN IV Trochlear

Question 10

Wha goes through the annular ring?

Answer 10

CN III Oculomotor and CN VI Abducent

Question 11

Where is the CN III Oculomotor?

Answer 11

Midbrain through superior orbital fissure to orbit

Question 12

What kind of motor control is there in the CN III Oculomotor?

Answer 12

Somatic and parasympatheitc

Question 13

Somatic motor control is to?

Answer 13

Inferior oblique, superior rectus, inferior rectus and medial rectus, levator palpabrae

Question 14

Parasympathetic control is to?

Answer 14

Sphincter papillae and ciliary muscle

Question 15

What is the superior division of oculomotor?

Answer 15

Leavtor palpabrae and superior rectus

Question 16

Where is the CN IV Trochlear?

Answer 16

Midbrain through superior orbital fissure to orbit

Question 17

Is the CN IV Trochlear o the inside or outside of the annular ring?

Answer 17

Outside

Question 18

What is the only cranial nerve which all fibres cross to the opposite side?

Answer 18

CN IV Trochlear

Question 19

Where does the motor fibres of the CN IV Trochlear go to?

Answer 19

Superior Oblique

Question 20

Where does the CN V Trigeminal nerve originate from?

Answer 20

The pons, forms a ganglion and divides into 3 divisions

Question 21

What are the 3 divisions of the Trigeminal nerve?

Answer 21

Ophthalmic
Maxillary
Mandibular

Question 22

What kind of innervation does the CN V Trigeminal give?

Answer 22

Motor and Sensory

Question 23

What does the Lacrimal, Zygomatic, Lingual and Auriculotemporal allow?

Answer 23

Passage of parasympathetic fibres from other cranial nerves

Question 24

Where does the CN IV Abducent nerve originate from?

Answer 24

The pons and passes through the superior orbital fissure to reach the orbit

Question 25

What is the long extradural pathway?

Answer 25

CN VI Abducent

Question 26

Where does the CN IV Abducent pass through?

Answer 26

Cavernous dural venous sinus with internal carotid artery

Question 27

Where does the CN VII Facial nerve originate from?

Answer 27

The pons, through internal acoustic meatus into temporal bone

Question 28

What is involved in the CN VII Facial nerve?

Answer 28

Greater petrosal, stapedial and chorda tympani

Question 29

Where does the motor fibres of the CN VII leave?

Answer 29

Stylomastoid foramen

Question 30

Where does the vestibule apparatus and auditory apparatus go through?

Answer 30

Internal auditory meatus to pons/medulla oblongata

Question 31

Where does the CN IX Glossopharyngeal originate from?

Answer 31

The medulla oblongata and passes through jugular foramen

Question 32

Where does the parasympathetic control go to in the CN IX?

Answer 32

Parotid, buccal and labial glands

Question 33

Where do you get taste from?

Answer 33

Posterior 1/3rd tongue

Question 34

Where does the motor control go to in glossopharyngeal?

Answer 34

Pharyngeal plexus and stylopharyngeus

Question 35

Where does the CN X Vagus nerve originate from?

Answer 35

The medulla oblongata though the jugular foramen

Question 36

What are the distributions of the CN X Vagus nerve?

Answer 36

Cranial, cervical, thoracic and abdominal

Question 37

Where are the pressure receptors?

Answer 37

Aortic arch

Question 38

Where are the chemoreceptors?

Answer 38

In the para-aortic body

Question 39

Where does the CN XI Accessory nerve originate from?

Answer 39

The spinal cord, enter foramen magnum and join cranial root then pass through jugular foramen

Question 40

Where is the motor control in the CN XI Accessory nerve?

Answer 40

Trapezius and sternocleidomastoid

Question 41

What is considered part of the vagus nerve?

Answer 41

Cranial root

Question 42

Where does the CN XII Hypoglassal nerve originate from?

Answer 42

The medulla oblongata passes through hypoglassal canal

Question 43

What enters the root of the tongue above hyoid bone?

Answer 43

CN XII Hypoglassal

Question 44

Where does the ophthalmic branch of trigeminal enter?

Answer 44

Orbit through superior orbital fissure

Question 45

Where does the maxillary branch of trigeminal enter?

Answer 45

pterygopalatine fossa through foramen rotundum

Question 46

Where does the mandibular branch of trigeminal go through?

Answer 46

foramen oval to inferior surface of the base of the skull