Cranial Nerves

Question 1 of 54

1

Which nerve innervates the horn in cattle and is blocked when de-horning?

Select one of the following:

Infratrochlear nerve, a branch of the ophthalmic division of the trigeminal nerve
Frontal nerve, a branch of the ophthalmic division of the trigeminal nerve
Infraorbital nerve, a branch of the maxillary division of the trigeminal nerve
Cornual nerve, a branch of the maxillary division of the trigeminal nerve
Auriculopalpebral nerve, a branch of the facial nerve

Explanation

Question 2 of 54

1

Which ONE of the following statements regarding the innervation of the eye and adnexa is FALSE?

Select one of the following:

The sphincter muscle of the iris receives voluntary, motor innervation via the Optic nerve (CN II).
The lacrimal gland receives parasympathetic innervation from the facial nerve.
The extraocular muscles that control the position of the eye in the orbit receive motor innervation from cranial nerves III (oculomotor), IV (trochlear) and VI (abducens).
The cornea receives sensory innervation via a branch of the Trigeminal nerve.

Explanation

Question 3 of 54

1

Concerning the motor innervation of the rostral and caudal bellies of the digastricus muscle:

Select one of the following:

Both the rostral and caudal bellies are innervated by the mylohoideus nerve a branch of the mandibular division of Trigeminal
The rostral belly is innervated by the digastric nerve a branch of the mandibular division of trigeminal whilst the caudal belly is innervated by the mylohyoideus nerve a branch of the facial nerve.
The rostral belly of digastricus is innervated by the hypoglossal nerve whilst the caudal belly is innervated by the mandibular division of Trigeminal nerve.
The rostral belly is innervated by the mylohoideus nerve a branch of the mandibular division of trigeminal nerve whilst the caudal belly is innervated by the digastric nerve a branch of the facial nerve.

Explanation

Question 4 of 54

1

All of the following are components of the auditory pathways to conscious level EXCEPT:

Select one of the following:

Cochlear division of cranial nerve VIII (vestibulocochlear)
Caudal colliculus
Cochlear nuclei
Medial geniculate nucleus
Vestibular nuclei

Explanation

Question 5 of 54

1

Which of the following statements concerning location of nerve cell bodies is FALSE?

Select one of the following:

Cell bodies of neurones supplying the horn in small ruminants are located in the trigeminal ganglion
Cell bodies of motor neurones innervating the trapezius muscle are located in the 1st 4 cervical segments of the spinal cord.
Cell bodies of preganglionic parasympathetic neurones supplying the stomach are located in the parasympathetic nucleus of X
Cell bodies of cranial nerve I (olfactory) are located in the olfactory bulb
Cell bodies of the neurones forming cranial nerve II (optic) are located in the ganglion cell layer of the retina

Explanation

Question 6 of 54

1

A cat comes into your practice for an eye examination. You test the ocular reflexes and you find:
- a normal bilateral menace response
- a normal direct pupillary light reflex (PLR) in the right eye but no consensual PLR in the left eye
- no direct PLR in the left eye but a normal consensual PLR in the right eye
- a drooping upper eyelid on the left side
Where is the lesion most likely to be?

Select one of the following:

Right optic nerve (CNII)
Left oculomotor nerve (CNIII)
Right oculomotor nerve (CNIII)
Left lateral geniculate nucleus

Explanation

Question 7 of 54

1

Why would paralysis of the dorsal and ventral buccal branches of the right facial nerve (CNVII) result in marked clinical signs in the horse?

Select one of the following:

The dorsal and ventral buccal branches are very superficial
The horse lacks a firm muzzle and therefore facial asymmetry is more evident than in other species
The right dorsal and ventral buccal branches have more nerve fibres than the left
The horse's facial musculature is well innervated
Check

Explanation

Question 8 of 54

1

Guttural pouch disease frequently causes neurological signs that can include cranial nerve deficits. This is because five cranial nerves pass through the walls of the guttural pouch of the horse. One of these passes through the lateral compartment and is rarely affected by disease, the other four run through the medial compartment and are commonly affected by disease.
Which four cranial nerves run through the medial compartment of the guttural pouch?

Select one of the following:

Glossopharyngeal (CNIX), vagus (CNX), accessory (CNXI) and hypoglossal (CNXII) nerves
Facial (CNVII), vagus (CNX), accessory (CNXI) and hypoglossal (CNXII) nerves
Vestibulocochlear (CNVIII), glossopharyngeal (CNIV), vagus (CNX) and accessory (CNXI) nerves
Trigeminal (CNV), glossopharyngeal (CNIV), vagus (CNX) and accessory (CNXI) nerves

Explanation

Question 9 of 54

1

Which nerve does the chorda tympani (a branch of the facial nerve (CNVII) join outside of the tympanic bulla?

Select one of the following:

Pterygopalatine nerve
Hypoglossal nerve
Lingual nerve
Glossopharyngeal nerve

Explanation

Question 10 of 54

1

The image below shows a dog head from a right lateral view. The skin and superficial muscles have been removed. Which branch of the trigeminal nerve (CNV) is indicated by A?

Select one of the following:

Infraorbital nerve
Mental nerve
Mandibular nerve
Ventral buccal branch

Explanation

Question 11 of 54

1

You are a vet in small animal general practice. You examine a dog and find the following:
- atrophy of the left temporalis and masseter muscles
- hypertrophy of the right temporalis and masseter muscles
- no lateral palpebral reflex on the left lower eye tested.
- normal blinking was observed during the consultation

Select one of the following:

Maxillary and mandibular nerves
Mandibular and facial nerves
Facial and ophthalmic nerves
Ophthalmic and maxillary nerves

Explanation

Question 12 of 54

1

Which cranial nerve provides motor innervation to the tongue?

Select one of the following:

Hypoglossal nerve (CNXII)
Facial nerve (CNVII)
Trigeminal nerve (CNV)
Glossopharyngeal nerve (CNIX)

Explanation

Question 13 of 54

1

Which extrinsic muscles of the eye does the oculomotor nerve (CN III) provide motor innervation to?

Select one of the following:

Medial rectus, dorsal rectus, ventral rectus, retractor bulbi muscles.
Lateral rectus, medial rectus, ventral rectus and ventral oblique muscles.
Medial rectus, dorsal rectus, ventral rectus and ventral oblique muscles
Lateral rectus, medial rectus, dorsal rectus and ventral rectus muscles.

Explanation

Question 14 of 54

1

Nerve fibres can be classified according to: distribution, tissue supplied and signal direction. Using these three categories how would the accessory nerve (CNXI) be classifed?

Select one of the following:

Special somatic efferent (SSE)
General somatic efferent (GSE or SE)
General visceral efferent (GVE or VE)
General somatic afferent (GSA)

Explanation

Question 15 of 54

1

The image below shows the canine cranium from a left ventral oblique view. What is the name of the opening from the cranium (i.e. fissure, foramen or canal) indicated by the arrow? Which cranial nerve emerges from it?

Select one of the following:

Hypoglossal canal; hypoglossal nerve (CNXII)
Jugular foramen; vagus nerve (CNX)
Oval foramen; trigeminal nerve mandibular branch(CNV3)
Stylomastoid foramen; facial nerve (CNVII)

Explanation

Question 16 of 54

1

Which cranial nerve branch passes all the way through the middle ear cavity?

Select one of the following:

Cochlear component of the vestibulocochlear nerve
Chorda tympani
Vestibular component of the vestibulocochlear nerve
Major petrosal nerve

Explanation

Question 17 of 54

1

Which cranial nerve is the only one to attach to the brain at the pons?

Select one of the following:

Trigeminal nerve (CNV)
Trochlear nerve (CN IV)
Facial nerve (CNVII)
Oculomotor nerve (CNIII)

Explanation

Question 18 of 54

1

Which cranial nerve(s) attach to the midbrain?

Select one of the following:

CNIII & CNIV
CNII
CNV
CNIII, CNIV & CNV
CNIX & CNX

Explanation

Question 19 of 54

1

Which one of these cranial nerves does NOT attach to the Medulla oblongata?

Select one of the following:

CN VI
CN VII
CN VIII
CN IX
CN X
CN XI
CN XII
CN V

Explanation

Question 20 of 54

1

What are the cranial nerves which provide parasympathetic supply?

Select one of the following:

CN III, CN VII, CN IX & CN X
CN II, CN III, CN VII & CN X
CN II, CN III, CN VII & CN IX
CN I, CN II , CN VII & CN X

Explanation

Question 21 of 54

1

Which cranial nerve provides parasympathetic supply to constrict the pupil size?

Select one of the following:

CN III
CN VII
CN IX
CN X

Explanation

Question 22 of 54

1

Which cranial nerve provides parasympathetic nerve supply to the lacrimal gland and the salivary glands sublingual and mandibular?

Select one of the following:

CN VII
CN III
CN IX
CN X

Explanation

Question 23 of 54

1

Which cranial nerve provides parasympathetic nerve supply to the parotid salivary gland?

Select one of the following:

CN IX
CN III
CN VII
CN X

Explanation

Question 24 of 54

1

Which cranial nerve provides parasympathetic nerve supply to the viscera of viscera of cervical, thorax and abdomen?

Select one of the following:

CN X
CN III
CN VII
CN IX

Explanation

Question 25 of 54

1

Which cranial nerve(s) pass through the orbital fissure?

Select one of the following:

CN III, CN IV, CN V & CN VI
CN VII
CN X & CN XI
CN I, CN III & CN III

Explanation

Question 26 of 54

1

Which cranial nerve(s) pass through the jugular foramen?

Select one of the following:

CN IX, CN X & CN XI
CN XII
CN VII
CN III, CN IV & CN V

Explanation

Question 27 of 54

1

Which cranial nerve(s) passes through the hypoglossal canal?

Select one of the following:

CN XII
CN IX, CN X N & CN XI
CN VII
CN VIII

Explanation

Question 28 of 54

1

Which cranial nerve provides the sensory input for taste of the caudal 1/3 of the tongue?

Select one of the following:

CN IX
CN VII
CN X
CN XI

Explanation

Question 29 of 54

1

Which cranial nerve is the smallest in size?

Select one of the following:

CN IV
CN V
CN VI
CN III

Explanation

Question 30 of 54

1

Which cranial nerve is the largest in size?

Select one of the following:

CN V
CN IV
CN III
CN VI

Explanation

Question 31 of 54

1

The Parasympathetic pathway where Preganglionic fibres run to the cilary ganglion describes which cranial nerve?

Select one of the following:

CN III
CN VII
CN IX
CN X

Explanation

Question 32 of 54

1

The Parasympathetic pathway where Preganglionic fibres run to the pterygopalatine and mandibular ganglion describes which cranial nerve?

Select one of the following:

CN VII
CN III
CN IX
CN X

Explanation

Question 33 of 54

1

The Parasympathetic pathway where Preganglionic fibres run to the otic ganglion describes which cranial nerve?

Select one of the following:

CN IX
CN X
CN III
CN VII

Explanation

Question 34 of 54

1

The Parasympathetic pathway where Preganglionic fibres run to the terminal ganglion describes which cranial nerve?

Select one of the following:

CN X
CN III
CN VII
CN IX

Explanation

Question 35 of 54

1

Which trigeminal branch CN V provides sensory input from the cornea and upper eyelids?

Select one of the following:

CN V1 Opthalmic
CN V2 Maxillary
CN V3 Mandibular

Explanation

Question 36 of 54

1

Which trigeminal nerve branch CN V provides sensory input from the lower eye lids?

Select one of the following:

CN V1 Opthalmic
CN V2 Maxillary
CN V3 Mandibular

Explanation

Question 37 of 54

1

What cranial nerve must have a dysfunction for a ventrolateral strabismus?

Select one of the following:

CN III
CN IV
CN VI
CN VII

Explanation

Question 38 of 54

1

What cranial nerve must have a dysfunction for a extorsional strabismus?

Select one of the following:

CN IV
CN III
CN VI
CN VII

Explanation

Question 39 of 54

1

What cranial nerve must have a dysfunction for a medial strabismus?

Select one of the following:

CN VI
CN IV
CN III
CN VII

Explanation

Question 40 of 54

1

What branch of CNV arises from the rostral alar foramen?

Select one of the following:

CN V2 Maxillary
CN V1 Opthalmic
CN V3 Mandibular

Explanation

Question 41 of 54

1

What muscle(s) does CN IV innervate?

Select one of the following:

Dorsal oblique
Lateral rectus & retractor bulbi
Medial, ventral & dorsal rectus and the ventral oblique

Explanation

Question 42 of 54

1

What muscle(s) does CN VI innervate?

Select one of the following:

Lateral rectus & retractor bulbi
Dorsal oblique
Medial, dorsal & ventral rectus and the ventral oblique.

Explanation

Question 43 of 54

1

What muscle(s) does CN III innervate?

Select one of the following:

Medial, ventral & dorsal rectus and the ventral oblique
Dorsal oblique
Lateral rectus & retractor bulbi

Explanation

Question 44 of 54

1

What cranial nerve is innervates muscles for neck turning?

Select one of the following:

CN XI
CN XII
CN X
CN IX
CN VII

Explanation

Question 45 of 54

1

Which of the following groups of cranial nerves all contain general visceral Efferent (GVE) components?

Select one of the following:

III, VII, IX, X
V, VI, VII, XI
V, VII, IX, X, XI
IX, X, XI, XII
III, IV, VI, XII

Explanation

Question 46 of 54

1

The extrinsic muscles of the tongue receive motor innervation from?

Select one of the following:

Hypoglossal
Glossopharyngeal
Vagus
Trigeminal
Facial

Explanation

Question 47 of 54

1

Which nerve supplies motor innervation to muscles such as levator nasolabialis?

Select one of the following:

Maxillary V
Mental branch of mandibular V
Infraorbital branch of maxillary V
Mandibular V
Facial VII

Explanation

Question 48 of 54

1

Which branch of which nerve supplies cutaneous sensation to the chin?

Select one of the following:

Mental branch of mandibular V
Infraorbital branch of maxillary V
Auriculotemporal branch of V
Maxillary V
Facial VII

Explanation

Question 49 of 54

1

Which cranial nerve passes through the cribiform plate of the skull?

Select one of the following:

Optic (II)
Trochlear (IV)
Oculomotor (III)
Trigeminal (V)
Olfactory (I)

Explanation

Question 50 of 54

1

The upper premolars and molars are innervated by:

Select one of the following:

Auriculopalpebral (VII)
Facial (VII)
Mandibular (V)
Infraorbital (V)
Auriculotemporal (V)

Explanation

Question 51 of 54

1

The cornual nerve supplies sensory innervation to the bovine horn. From which nerve is it derived?

Select one of the following:

Dorsal buccal (VII)
Mandibular n. (V3)
Maxillary n. (V2)
Auriculopalpebral (VII)
Ophthalmic (V)

Explanation

Question 52 of 54

1

Which cranial nerve supplies sensory innervation to the larynx?

Select one of the following:

Accessory (XI)
Facial (VII)
Vagus (X)
Hypoglossal (XII)
Glossopharyngeal (IX)

Explanation

Question 53 of 54

1

the carotid sinus at the origin of the internal carotid artery is innervated by

Select one of the following:

Facial n (VII)
Vagus n (X)
Abducens n (VI)
Accessory n (XI)
Glossopharyngeal n (IX)

Explanation

Question 54 of 54

1

The cornea receives sensory innervation from the long ciliary nerves of

Select one of the following:

Maxillary n (V)
Oculomotor n (III)
Ophthalmic n (V)
Auriculopalpebral n (VII)
Dorsal buccal n (VII)

	Created by Jack Fawsitt almost 8 years ago

Principles and animal form and fucntion (Unit 5 Nervous System) Quiz on Cranial Nerves, created by Jack Fawsitt on 18/02/2017.

Cranial Nerves

Cranial Nerves

Question 1 of 54

Which nerve innervates the horn in cattle and is blocked when de-horning?

Select one of the following:

Explanation

Question 2 of 54

Which ONE of the following statements regarding the innervation of the eye and adnexa is FALSE?

Select one of the following:

Explanation

Question 3 of 54

Concerning the motor innervation of the rostral and caudal bellies of the digastricus muscle:

Select one of the following:

Explanation

Question 4 of 54

All of the following are components of the auditory pathways to conscious level EXCEPT:

Select one of the following:

Explanation

Question 5 of 54

Which of the following statements concerning location of nerve cell bodies is FALSE?

Select one of the following:

Explanation

Question 6 of 54

Select one of the following:

Explanation

Question 7 of 54

Why would paralysis of the dorsal and ventral buccal branches of the right facial nerve (CNVII) result in marked clinical signs in the horse?

Select one of the following:

Explanation

Question 8 of 54

Select one of the following:

Explanation

Question 9 of 54

Which nerve does the chorda tympani (a branch of the facial nerve (CNVII) join outside of the tympanic bulla?

Select one of the following:

Explanation

Question 10 of 54

The image below shows a dog head from a right lateral view. The skin and superficial muscles have been removed. Which branch of the trigeminal nerve (CNV) is indicated by A?

Select one of the following:

Explanation

Question 11 of 54

Select one of the following:

Explanation

Question 12 of 54

Which cranial nerve provides motor innervation to the tongue?

Select one of the following:

Explanation

Question 13 of 54

Which extrinsic muscles of the eye does the oculomotor nerve (CN III) provide motor innervation to?

Select one of the following:

Explanation

Question 14 of 54

Nerve fibres can be classified according to: distribution, tissue supplied and signal direction. Using these three categories how would the accessory nerve (CNXI) be classifed?

Select one of the following:

Explanation

Question 15 of 54

The image below shows the canine cranium from a left ventral oblique view. What is the name of the opening from the cranium (i.e. fissure, foramen or canal) indicated by the arrow? Which cranial nerve emerges from it?

Select one of the following:

Explanation

Question 16 of 54

Which cranial nerve branch passes all the way through the middle ear cavity?

Select one of the following:

Explanation

Question 17 of 54

Which cranial nerve is the only one to attach to the brain at the pons?

Select one of the following:

Explanation

Question 18 of 54

Which cranial nerve(s) attach to the midbrain?

Select one of the following:

Explanation

Question 19 of 54

Which one of these cranial nerves does NOT attach to the Medulla oblongata?

Select one of the following:

Explanation

Question 20 of 54

What are the cranial nerves which provide parasympathetic supply?

Select one of the following:

Explanation