Trigeminal Nerve

Question 1

1. The afferent limb of the corneal reflex is mediated by which branch of the trigeminal nerve?
   a) Mandibular b) Maxillary c) Ophthalmic d) Zygomatic

Answer 1

c) Ophthalmic

Question 2

2. Which foramen does the maxillary division of the trigeminal nerve pass through?
   a) Superior orbital fissure b) Foramen rotundum c) Foramen ovale d) Foramen magnum

Answer 2

b) Foramen rotundum

Question 3

3. Damage to the mandibular division of the trigeminal nerve would cause:
   a) Loss of taste b) Weakness in chewing c) Inability to close the eye d) Hearing loss

Answer 3

b) Weakness in chewing

Question 4

4. The chorda tympani branch of the facial nerve joins which nerve to reach the tongue?
   a) Inferior alveolar nerve b) Lingual nerve c) Auriculotemporal nerve d) Greater petrosal nerve

Answer 4

b) Lingual nerve

Question 5

5. Which nerve supplies sensation to the anterior two-thirds of the tongue?
   a) Glossopharyngeal nerve b) Lingual nerve c) Hypoglossal nerve d) Chorda tympani

Answer 5

b) Lingual nerve

Question 6

6. The superior alveolar nerves are branches of which division of the trigeminal nerve?
   a) Ophthalmic b) Maxillary c) Mandibular d) Facial

Answer 6

b) Maxillary

Question 7

7. Which structure is not innervated by the mandibular division of the trigeminal nerve?
   a) Mylohyoid b) Tensor tympani c) Masseter d) Buccinator

Answer 7

d) Buccinator

Question 8

8. The motor component of the facial nerve exits the skull via which foramen?
   a) Stylomastoid foramen b) Foramen rotundum c) Foramen ovale d) Superior orbital fissure

Answer 8

a) Stylomastoid foramen

Question 9

9. A lesion in the facial nerve proximal to the geniculate ganglion would result in:
   a) Loss of taste only b) Loss of lacrimation and taste c) Loss of hearing d) Loss of mastication

Answer 9

b) Loss of lacrimation and taste

Question 10

10. Which branch of the facial nerve innervates the stapedius muscle?
    a) Chorda tympani b) Stapedial nerve c) Greater petrosal nerve d) Zygomatic nerve

Answer 10

b) Stapedial nerve

Question 11

11. Damage to the zygomatic branch of the facial nerve would affect which function?
    a) Raising the eyebrows b) Closing the eye c) Smiling d) Frowning

Answer 11

b) Closing the eye

Question 12

12. The mandibular division of the trigeminal nerve exits the skull through which foramen?
    a) Foramen rotundum b) Foramen ovale c) Stylomastoid foramen d) Jugular foramen

Answer 12

b) Foramen ovale

Question 13

13. The efferent limb of the jaw jerk reflex is mediated by which nerve?
    a) Maxillary division b) Mandibular division c) Lingual nerve d) Buccal nerve

Answer 13

b) Mandibular division

Question 14

14. Which nerve is responsible for parasympathetic innervation to the lacrimal gland?
    a) Chorda tympani b) Greater petrosal nerve c) Zygomaticotemporal nerve d) Auriculotemporal nerve

Answer 14

b) Greater petrosal nerve

Question 15

15. Which branch of the trigeminal nerve carries sensory fibers to the cornea?
    a) Nasociliary nerve b) Frontal nerve c) Lacrimal nerve d) Infratrochlear nerve

Answer 15

a) Nasociliary nerve

Question 16

16. A lesion of the lingual nerve after it joins the chorda tympani would result in:
    a) Loss of taste and general sensation b) Loss of only taste c) Loss of only general sensation d) Complete facial paralysis

Answer 16

a) Loss of taste and general sensation

Question 17

17. Which nerve provides sensation to the hard palate?
    a) Greater palatine nerve b) Lesser palatine nerve c) Nasopalatine nerve d) Infraorbital nerve

Answer 17

a) Greater palatine nerve

Question 18

18. Which nerve is responsible for motor innervation to the tensor tympani muscle?
    a) Maxillary nerve b) Mandibular nerve c) Facial nerve d) Glossopharyngeal nerve

Answer 18

b) Mandibular nerve

Question 19

19. Which nerve mediates the afferent limb of the sneeze reflex?
    a) Mandibular nerve b) Maxillary nerve c) Ophthalmic nerve d) Facial nerve

Answer 19

b) Maxillary nerve

Question 20

20. A lesion in the ophthalmic division of the trigeminal nerve would impair which reflex?
    a) Pupillary light reflex b) Jaw jerk reflex c) Corneal reflex d) Gag reflex

Answer 20

c) Corneal reflex

Question 21

21. The geniculate ganglion contains cell bodies for which type of fibers?
    a) Motor fibers b) Sensory fibers c) Both motor and sensory fibers d) Sympathetic fibers

Answer 21

b) Sensory fibers

Question 22

22. Which structure is innervated by the posterior auricular nerve?
    a) Occipitalis muscle b) Frontalis muscle c) Masseter muscle d) Orbicularis oris muscle

Answer 22

a) Occipitalis muscle

Question 23

23. The maxillary division of the trigeminal nerve is responsible for sensory innervation to:
    a) Lower teeth b) Anterior two-thirds of the tongue c) Palate and upper teeth d) External ear

Answer 23

c) Palate and upper teeth

Question 24

24. Which nerve provides parasympathetic innervation to the parotid gland?
    a) Auriculotemporal nerve b) Glossopharyngeal nerve c) Greater petrosal nerve d) Inferior alveolar nerve

Answer 24

a) Auriculotemporal nerve

Question 25

25. Which nerve supplies the anterior belly of the digastric muscle? a) Hypoglossal nerve b) Mandibular nerve c) Facial nerve d) Lingual nerve

Answer 25

b) Mandibular nerve

Question 26

26. The infraorbital nerve is a branch of which division of the trigeminal nerve? a) Ophthalmic division b) Maxillary division c) Mandibular division d) Facial nerve

Answer 26

b) Maxillary division

Question 27

27. A lesion in the mandibular division of the trigeminal nerve would result in which clinical finding? a) Loss of sensation to the cornea b) Weakness in mastication c) Inability to close the eyelid d) Loss of taste

Answer 27

b) Weakness in mastication

Question 28

28. The nervus intermedius carries which fibers? a) Motor fibers only b) Sensory fibers only c) Parasympathetic and sensory fibers d) Sympathetic fibers

Answer 28

c) Parasympathetic and sensory fibers

Question 29

29. Which cranial nerve provides motor innervation to the muscles of mastication? a) CN V b) CN VII c) CN IX d) CN X

Answer 29

a) CN V

Question 30

30. The nasopalatine nerve provides sensation to which structure? a) Nasal cavity b) Palatine tonsils c) Hard palate d) Upper teeth

Answer 30

c) Hard palate

Question 31

31. Which cranial nerve mediates the efferent limb of the corneal reflex? a) CN III b) CN V c) CN VII d) CN IX

Answer 31

c) CN VII

Question 32

32. The lateral pterygoid muscle is innervated by which nerve? a) Buccal nerve b) Mandibular nerve c) Zygomatic nerve d) Inferior alveolar nerve

Answer 32

b) Mandibular nerve

Question 33

33. Which nerve is responsible for taste from the anterior two-thirds of the tongue? a) Lingual nerve b) Glossopharyngeal nerve c) Chorda tympani d) Maxillary nerve

Answer 33

c) Chorda tympani

Question 34

34. The superior orbital fissure transmits which division of the trigeminal nerve? a) Mandibular division b) Maxillary division c) Ophthalmic division d) Facial nerve

Answer 34

c) Ophthalmic division

Question 35

35. Which nerve supplies the sensory innervation to the skin over the zygomatic bone? a) Infraorbital nerve b) Zygomaticofacial nerve c) Zygomaticotemporal nerve d) Buccal nerve

Answer 35

b) Zygomaticofacial nerve

Question 36

36. The auriculotemporal nerve carries parasympathetic fibers to which gland? a) Submandibular gland b) Sublingual gland c) Parotid gland d) Lacrimal gland

Answer 36

c) Parotid gland

Question 37

37. Which cranial nerve mediates the afferent limb of the jaw jerk reflex? a) CN V b) CN VII c) CN IX d) CN X

Answer 37

a) CN V

Question 38

38. Damage to the hypoglossal nerve would primarily affect: a) Tongue movement b) Salivary secretion c) Swallowing d) Taste sensation

Answer 38

a) Tongue movement

Question 39

39. The lesser palatine nerve supplies which area? a) Soft palate b) Hard palate c) Nasal cavity d) External ear

Answer 39

a) Soft palate

Question 40

40. Which structure is innervated by the supraorbital nerve? a) Forehead and scalp b) Nose and upper lip c) Palate d) Cheek

Answer 40

a) Forehead and scalp