Cranial nerves

Question 1

Which name and number Cranial nerve is associated with sense of smell

Answer 1

Cr 1 Olfactory

Question 2

Which name and number Cranial nerve is associated with vision?

Answer 2

Cr11 Optic

Question 3

Which name and number Cranial nerve which also carres parasympathetic fibres is associated with Eye Movement?

Answer 3

Cr111 Oculo- motor

Question 4

Which name and number Cranial nerve is associated with eye movement?

Answer 4

Cr 1V Trochlear

Question 5

Which name and number Cranial nerve is associated with sensations from the face?

Answer 5

Cr V Trigeminal

Question 6

Which name and number Cranial nerve is associated with eye movements and abduction (lateral movement) of the eye?

Answer 6

CR V1 Abducent

Question 7

Which name and number Cranial nerve is associated with moving (motor) the muscles of the face?

Answer 7

Cr V11 Facial - also carries parasympathetic fibres

Question 8

Which name and number Cranial nerve is associated with hearing and balance?

Answer 8

Cr V111 Vestibulo-Cochlear

Question 9

Which name and number Cranial nerve is associated with Sensory from the throat and tongue?

Answer 9

Cr 1X Glosso- pharyngeal - also carries parasympathetic fibres

Question 10

Which name and number Cranial nerve is associated with being the parasympathetic supply to most of the viscera?

Answer 10

Cr X Vagus

Question 11

Which name and number Cranial nerve is associated with being the motor nerve to sterno-cleido mastoid and trapezius muscles?

Answer 11

CR X1- Accessory (Spinal Accessory Nerve)

Question 12

Which name and number Cranial nerve is associated with tongue movement?

Answer 12

Cr X11 Hypoglossal

Question 13

Where do Cranial Nerves 1 and 11 emerge from in the brain?

Answer 13

Forebrain

Question 14

Where do Cranial Nerves 111 and V1 emerge from in the brain?

Answer 14

Midbrain

Question 15

Where do Cranial Nerves V V1 V11 and V111 emerge from in the brain?

Answer 15

Pons

Question 16

Where do Cranial Nerves 1X, X, X1, X11 emerge from in the brain?

Answer 16

Medulla

Question 17

What do Cranial Nerve sensory fibres do?

Answer 17

Receive sensations: touch, temperature, pain, proprioception (awareness and perception fo body movement)

Question 18

What do Cranial Nerve motor fibres do?

Answer 18

Induce movement: muscles of facial expression, the eyes, the tongue, throat (speaking and swallowing)

Question 19

What do Cranial Nerve Parasympathetic fibres do?

Answer 19

Induce autonomic responses; glandular secretions, tears, mucus, saliva, digestive juices, pupil constriction, lens accommodation, maintain function of heart, lungs and digestive system.

Question 20

What is the origin of the sympathetic fibres joining cranial nerves, where do they synapse and where do they enter the cranium?

Answer 20

Originate in T10T2, pass up the neck and synapse at the superior cervical sympathetic ganglion and enter the cranium through the carotid canal.

Question 21

What do Cranial Nerve sympathetic fibres do?

Answer 21

Induce; pupil dilation, vasoconstriction, sphincter constriction and glandular secretions.

Question 22

Which Cranial Nerves are purely sensory

Answer 22

1, 11, V111

Question 23

Which Cranial nerves are purely motor?

Answer 23

IV, VI, X1 and X11

Question 24

Which Cranial nerves carry parasympathetic fibres?

Answer 24

111, V11, 1X, X- 3.7.9.10

Question 25

Where do Cranial nerves have their nuclei?

Answer 25

In the brain and brainstem

Question 26

Name the two foramina of the anterior cranium and the nerves which pass through them?

Answer 26

The cribriform plate (CR1 Olfactory Nerve), Optic Canal (CR11- optic Nerve and ophthalmic artery.

Question 27

Name the two fissures in the back of the orbit

Answer 27

Superior Orbital Fissure and Inferior orbital fissure

Question 28

Which Cranial nerves and other structures pass through the Superior Orbital Fissure?

Answer 28

Everything eye related: Cr111- oculo motor nerve, Cr1V Trochlear Nerve, CR V1 Abducent nerve and opthalmic branch of CRV trigeminal nerve AND the Opthalmic Vein

Question 29

Which Cranial nerves and other structures pass through the Inferior Orbital Fissure?

Answer 29

Enables entry of maxillary branch of trigeminal nerve CRV into the floor of the orbit.

Question 30

Where is the Foramen rotundum located and which cranial nerves pass through it?

Answer 30

Greater wing of the Sphenoid, maxillary branch of CRV Maxillary branch- exits from the cranium before entering the orbit through the inferior orbital fissure

Question 31

Where is the Foramen ovale located and which cranial nerves pass through it?

Answer 31

Greater wing of sphenoid- mandibular branch of CRV trigeminal nerve exits from the cranium together with motor branch of CRV

Question 32

Where is the Foramen spinosum located and which cranial nerves pass through it?

Answer 32

Greater wing of sphenoid- middle meningeal artery passes up into the cranium to supply arterial blood to the meninges together with the recurrent meningeal branch of the trigeminal nerve - small branch of the mandibular branch

Question 33

Where is the internal auditory meatus located and which cranial nerves pass through it?

Answer 33

Medial wall of petrous portion of temporal bone. CR V11- facial nerve and CRV111 Vestibulo - cochlear nerve

Question 34

Where is the stylomastoid foramen located and which cranial nerves pass through it?

Answer 34

Inferior surface of temporal bone- located between styloid process and the mastoid process. CRV11- facial nerve- exits here before turning anteriorly to travel to the face.

Question 35

Where is the jugular foramen located and which cranial nerves pass through it?

Answer 35

Antero-lateral to Foramen Magnum between the occiput and mastoid portion of the temporal bone. Internal Jugular vein, Glosso-pharyngeal Nerve CR IX, Vagus Nerve CRX and Spinal Accessory Nerve CR X1

Question 36

Where is the hypoglossal canal located and which cranial nerves pass through it?

Answer 36

Within the condular portion of the occiput- CRX11 hypoglossal nerve

Question 37

Where is the foramen magnum located and which cranial nerves pass through it?

Answer 37

base of skull in occiput. Formed by 4 portions of the occiput. Spinal Cord, CR X1- spinal roots of spinal accessory nerve, vetebral arteries.

Question 38

Where is the foramen lacerum located and which structures pass through it?

Answer 38

Located between body of the sphenoid and petrous portion of the temporal bone. Superior opening of carotid canal though which the internal cartoid artery enters the cranium to provide arterial blood to the brain.. Its lower portion is filled with cartilage so noting can pass through. Creates S bend in carotid canal.