Y2: Cranial Nerves

Question 1

Which cranial nerve is responsible for the sense of smell?

Answer 1

Cranial Nerve I, also known as the Olfactory nerve.

Question 2

What is the primary function of the optic nerve?

Answer 2

Cranial Nerve II, the Optic nerve, is responsible for vision.

Question 3

Which cranial nerve controls eye movements in all directions except down and out?

Answer 3

Cranial Nerve III, the Oculomotor nerve.

Question 4

What is the specific function of the Trochlear nerve?

Answer 4

Cranial Nerve IV, the Trochlear nerve, controls the superior oblique muscle of the eye, primarily responsible for downward and outward eye movements.

Question 5

Which cranial nerve innervates the lateral rectus muscle of the eye?

Answer 5

Cranial Nerve VI, the Abducens nerve.

Question 6

What is the primary function of the Trigeminal nerve?

Answer 6

Cranial Nerve V, the Trigeminal nerve, is responsible for sensory innervation of the face and motor control of the muscles of mastication.

Question 7

Which cranial nerve controls the muscles responsible for facial expression?

Answer 7

Cranial Nerve VII, the Facial nerve.

Question 8

What is the function of the Vestibulocochlear nerve?

Answer 8

Cranial Nerve VIII, the Vestibulocochlear nerve, carries sensory information for hearing and balance.

Question 9

Which cranial nerve innervates the muscles of the pharynx for swallowing and speaking?

Answer 9

Cranial Nerve IX, the Glossopharyngeal nerve.

Question 10

What is the function of the Vagus nerve?

Answer 10

Cranial Nerve X, the Vagus nerve, has multiple functions including parasympathetic control of the heart, lungs, and digestive tract, as well as sensory and motor functions in the throat and voice box.

Question 11

Which cranial nerve controls the muscles of the palate and helps in swallowing?

Answer 11

Cranial Nerve XI, the Accessory nerve.

Question 12

What is the function of the Hypoglossal nerve?

Answer 12

Cranial Nerve XII, the Hypoglossal nerve, controls the muscles of the tongue for speech and swallowing.

Question 13

What is the mnemonic for remembering the names of the cranial nerves?

Answer 13

“On Old Olympus’ Towering Top, A Finn And German Viewed Some Hops.”

Question 14

What is the structure that connects the olfactory bulb to the brain?

Answer 14

The olfactory nerve fibers travel through the cribriform plate of the ethmoid bone to reach the olfactory bulb.

Question 15

Which cranial nerve passes through the superior orbital fissure?

Answer 15

Cranial Nerve III (Oculomotor), Cranial Nerve IV (Trochlear), Cranial Nerve V (Trigeminal, Ophthalmic division), and Cranial Nerve VI (Abducens) pass through the superior orbital fissure.

Question 16

What is the name of the bony canal through which the facial nerve exits the skull?

Answer 16

The stylomastoid foramen.

Question 17

Which cranial nerves are purely sensory?

Answer 17

Cranial Nerves I (Olfactory), II (Optic), and VIII (Vestibulocochlear) are purely sensory.

Question 18

What is the primary function of the glossopharyngeal nerve in addition to swallowing?

Answer 18

It carries taste sensation from the posterior one-third of the tongue and sensory input from the carotid sinus and carotid body.

Question 19

What is the function of the trochlear nerve in addition to controlling eye movements?

Answer 19

It provides proprioceptive information from the superior oblique muscle.

Question 20

Which cranial nerves are involved in the gag reflex?

Answer 20

Cranial nerves IX (Glossopharyngeal) and X (Vagus).

Question 21

Which cranial nerve innervates the muscles responsible for smiling and closing the eye tightly?

Answer 21

Cranial Nerve VII (Facial).

Question 22

What is the function of the accessory nerve in addition to controlling neck muscles?

Answer 22

It also innervates the sternocleidomastoid muscle.

Question 23

What is the mnemonic for remembering the functional components of the trigeminal nerve?

Answer 23

“Some Say Marry Money, But My Brother Says Big Brains Matter More” - S = Sensory, M = Motor, B = Both.

Question 24

What are the three divisions of the trigeminal nerve?

Answer 24

Ophthalmic (V1), Maxillary (V2), Mandibular (V3).

Question 25

What is the primary sensory function of the vagus nerve within the thorax and abdomen?

Answer 25

It provides sensory information from the viscera.

Question 26

Which cranial nerve passes through the cribriform plate?

Answer 26

Cranial Nerve I (Olfactory nerve).

Question 27

What is the foramen through which the optic nerve passes?

Answer 27

Optic canal.

Question 28

Which cranial nerve passes through the superior orbital fissure?

Answer 28

Cranial Nerves III (Oculomotor), IV (Trochlear), V (Trigeminal, Ophthalmic division), and VI (Abducens).

Question 29

Through which foramen does the trigeminal nerve exit the skull?

Answer 29

Foramen rotundum (V2) and foramen ovale (V3).

Question 30

What is the foramen for the facial nerve?

Answer 30

Stylomastoid foramen.

Question 31

Which cranial nerve exits the skull through the internal acoustic meatus?

Answer 31

Cranial Nerve VII (Facial) and Cranial Nerve VIII (Vestibulocochlear).

Question 32

What is the name of the foramen for the glossopharyngeal nerve?

Answer 32

Jugular foramen.

Question 33

Through which foramen does the vagus nerve exit the skull?

Answer 33

Jugular foramen.

Question 34

Which cranial nerve exits the skull through the hypoglossal canal?

Answer 34

Cranial Nerve XII (Hypoglossal).

Question 35

What is the foramen for the trochlear nerve?

Answer 35

Superior orbital fissure.