Face in Human Anatomy MCQ Questions and Answers

1. The muscle primarily responsible for elevating the upper lip and dilating the nostril (nasal ala) is:
A) Zygomaticus major
B) Levator anguli oris
C) Levator labii superioris alaeque nasi
D) Risorius
Answer: C) Levator labii superioris alaeque nasi

2. A lesion of the marginal mandibular branch of the facial nerve causes paralysis of which muscle leading to lower lip asymmetry?
A) Platysma
B) Depressor anguli oris
C) Orbicularis oculi
D) Levator labii superioris
Answer: B) Depressor anguli oris

3. The sensory supply to the skin over the angle of the mandible is primarily from which nerve?
A) Greater auricular nerve (C2–C3)
B) Auriculotemporal nerve (V3)
C) Mental nerve (V3)
D) Zygomaticotemporal nerve (V2)
Answer: A) Greater auricular nerve (C2–C3)

4. The facial artery enters the face by crossing which structure?
A) Through the parotid gland
B) Over the inferior border of the mandible, anterior to the masseter
C) Through the infraorbital foramen
D) Through the mental foramen
Answer: B) Over the inferior border of the mandible, anterior to the masseter

5. Which muscle contributes to the nasolabial fold (deepening on smiling) by elevating the corner of the mouth?
A) Buccinator
B) Zygomaticus major
C) Depressor labii inferioris
D) Orbicularis oris
Answer: B) Zygomaticus major

6. The parotid duct (Stensen’s duct) opens into the oral cavity opposite which tooth?
A) Upper canine
B) Upper second molar
C) Lower second premolar
D) Upper first premolar
Answer: B) Upper second molar

7. A patient with Bell’s palsy cannot close the eye on the affected side. Which branch of the facial nerve is primarily responsible for orbicularis oculi paralysis?
A) Cervical branch
B) Buccal branch
C) Temporal branch
D) Marginal mandibular branch
Answer: C) Temporal branch

8. The facial vein communicates with the cavernous sinus via which vein, explaining the danger triangle of the face?
A) Maxillary vein
B) Superficial temporal vein
C) Superior ophthalmic vein
D) Deep facial vein
Answer: C) Superior ophthalmic vein

9. The buccinator muscle is pierced by which structure?
A) Facial artery
B) Parotid (Stensen’s) duct
C) Inferior alveolar nerve
D) Lingual nerve
Answer: B) Parotid (Stensen’s) duct

10. The buccal branch of the facial nerve supplies motor fibers to all except:
A) Buccinator
B) Orbicularis oris
C) Masseter
D) Levator labii superioris
Answer: C) Masseter

11. The infraorbital nerve is a branch of which division of the trigeminal nerve?
A) Ophthalmic (V1)
B) Maxillary (V2)
C) Mandibular (V3)
D) Facial nerve (VII)
Answer: B) Maxillary (V2)

12. Which artery is a terminal branch of the external carotid artery that supplies the face and forms the angular artery near the medial margin of the orbit?
A) Superficial temporal artery
B) Maxillary artery
C) Occipital artery
D) Facial artery
Answer: D) Facial artery

13. The mental nerve supplies sensation to which area?
A) Tip of nose
B) Lower eyelid
C) Lower lip and chin
D) Upper lip
Answer: C) Lower lip and chin

14. Which muscle forms the majority of the cheek and aids in mastication by keeping food between the teeth?
A) Zygomaticus minor
B) Buccinator
C) Masseter
D) Orbicularis oris
Answer: B) Buccinator

15. A tumor in the parotid gland most commonly affects which cranial nerve first?
A) Trigeminal nerve (V)
B) Facial nerve (VII)
C) Glossopharyngeal nerve (IX)
D) Hypoglossal nerve (XII)
Answer: B) Facial nerve (VII)

16. The bony landmark that articulates with the zygomatic bone to form the zygomatic arch is:
A) Temporal process of zygoma
B) Maxillary tuberosity
C) Zygomatic process of the temporal bone
D) Frontal process of maxilla
Answer: C) Zygomatic process of the temporal bone

17. The skin over the lateral aspect of the nose and the medial cheek receives sensory supply from which nerve branch?
A) Infraorbital nerve (V2)
B) External nasal branch of anterior ethmoidal (V1)
C) Mental nerve (V3)
D) Zygomaticofacial (V2)
Answer: A) Infraorbital nerve (V2)

18. The modiolus of the mouth is an important fibromuscular structure formed by the interlacing fibers of several muscles. Which of the following does not contribute to the modiolus?
A) Orbicularis oris
B) Zygomaticus major
C) Masseter
D) Levator anguli oris
Answer: C) Masseter

19. Which ligament attaches the mandible to the zygomatic arch and helps limit excessive mouth opening?
A) Sphenomandibular ligament
B) Stylomandibular ligament
C) Lateral (temporomandibular) ligament
D) Pterygomandibular raphe
Answer: C) Lateral (temporomandibular) ligament

20. The sensory to the anterior two-thirds of the tongue is carried by which nerve?
A) Hypoglossal nerve (XII)
B) Glossopharyngeal nerve (IX)
C) Lingual nerve (branch of V3)
D) Chorda tympani alone
Answer: C) Lingual nerve (branch of V3)

21. The parotid gland receives preganglionic parasympathetic fibers from which cranial nerve nucleus (via which nerve)?
A) Superior salivatory nucleus via chorda tympani
B) Inferior salivatory nucleus via glossopharyngeal (IX) → tympanic → lesser petrosal
C) Dorsal motor nucleus via vagus
D) Accessory nucleus via glossopharyngeal
Answer: B) Inferior salivatory nucleus via glossopharyngeal (IX) → tympanic → lesser petrosal

22. The triangular fossa lateral to the nose, that is clinically relevant in rhinoplasty, is bounded inferiorly by which muscle?
A) Nasalis compressor part
B) Levator labii superioris alaeque nasi
C) Depressor septi nasi
D) Procerus
Answer: B) Levator labii superioris alaeque nasi

23. Which artery is important in epistaxis from the anterior nasal septum (Little’s area)?
A) Posterior ethmoidal artery
B) Sphenopalatine artery
C) Superior labial artery (branch of facial)
D) Maxillary artery directly
Answer: C) Superior labial artery (branch of facial)

24. The marginal mandibular branch of the facial nerve runs superficial to which structure as it courses along the mandible?
A) Parotid duct
B) Facial vein
C) Masseter muscle
D) Buccal fat pad
Answer: B) Facial vein

25. The cutaneous innervation of the tip of the nose is mainly from which nerve?
A) Infraorbital nerve (V2)
B) External nasal nerve (branch of anterior ethmoidal, V1)
C) Mental nerve (V3)
D) Buccal nerve (V3)
Answer: B) External nasal nerve (branch of anterior ethmoidal, V1)

26. The motor root of the facial nerve exits the skull via which foramen?
A) Jugular foramen
B) Foramen rotundum
C) Stylomastoid foramen
D) Foramen ovale
Answer: C) Stylomastoid foramen

27. Bell’s palsy most commonly presents with hyperacusis when which branch is affected?
A) Buccal branch
B) Nerve to stapedius (branch of facial nerve)
C) Greater petrosal nerve
D) Chorda tympani
Answer: B) Nerve to stapedius (branch of facial nerve)

28. The zygomaticus minor muscle primarily serves to:
A) Depress the angle of the mouth
B) Close the eyelids
C) Elevate the upper lip
D) Protrude the lower lip
Answer: C) Elevate the upper lip

29. The temporal branch of the facial nerve passes superficial to which structure as it crosses the zygomatic arch?
A) Superficial temporal artery
B) Zygomatic arch (periosteum) — it runs over the arch
C) Masseter muscle
D) Parotid duct
Answer: B) Zygomatic arch (periosteum) — it runs over the arch

30. The primary action of the platysma is to:
A) Elevate the mandible
B) Depress the lower face and tighten skin of the neck
C) Close the mouth
D) Protrude the tongue
Answer: B) Depress the lower face and tighten skin of the neck

31. Which space of the face/neck would likely allow spread of infection from the oral cavity to the carotid sheath structures?
A) Buccal space only
B) Pterygomandibular (or masticator) space communicating via parapharyngeal space
C) Superficial temporal space only
D) Anterior cervical space only
Answer: B) Pterygomandibular (or masticator) space communicating via parapharyngeal space

32. The infraorbital foramen transmits which of the following?
A) Maxillary artery branch only
B) Infraorbital nerve and vessels
C) Mandibular nerve branch
D) Ophthalmic vein
Answer: B) Infraorbital nerve and vessels

33. The facial nerve’s greater petrosal branch carries what type of fibers?
A) Somatic motor to the lacrimal gland
B) Preganglionic parasympathetic to lacrimal and nasal glands (to pterygopalatine ganglion)
C) Sensory taste to posterior tongue
D) Postganglionic sympathetic fibers
Answer: B) Preganglionic parasympathetic to lacrimal and nasal glands (to pterygopalatine ganglion)

34. The transverse facial artery arises from which major vessel?
A) Facial artery
B) Superficial temporal artery (branch of external carotid)
C) Maxillary artery
D) Ophthalmic artery
Answer: B) Superficial temporal artery (branch of external carotid)

35. Which muscle tightens the cheeks to assist during blowing and is also important in preventing food accumulation in the vestibule?
A) Masseter
B) Buccinator
C) Orbicularis oculi
D) Levator anguli oris
Answer: B) Buccinator

36. Injury to the facial nerve proximal to the geniculate ganglion would cause which combination?
A) Motor loss only
B) Motor paralysis, loss of lacrimation, hyperacusis, and taste anterior two-thirds loss
C) Loss of trigeminal sensation
D) Loss of tongue movement (XII)
Answer: B) Motor paralysis, loss of lacrimation, hyperacusis, and taste anterior two-thirds loss

37. The muscle that closes the mouth and protrudes the lips (as in kissing) is:
A) Buccinator
B) Orbicularis oris
C) Mentalis
D) Depressor labii inferioris
Answer: B) Orbicularis oris

38. The common site for palpation of the facial artery pulse is where it crosses which structure?
A) Inferior orbital margin
B) Inferior border of the mandible, anterior to the masseter
C) Zygomatic arch
D) Angle of the mouth
Answer: B) Inferior border of the mandible, anterior to the masseter

39. The facial nerve provides taste sensation to the anterior two-thirds of the tongue via which component?
A) Greater petrosal nerve
B) Chorda tympani
C) Lingual nerve only
D) Glossopharyngeal nerve
Answer: B) Chorda tympani

40. The mentalis muscle’s primary action is:
A) Elevate the angle of the mouth
B) Elevate and protrude the lower lip, wrinkle chin skin
C) Depress the lower lip laterally
D) Retract the upper lip
Answer: B) Elevate and protrude the lower lip, wrinkle chin skin

41. The roof of the infratemporal fossa is formed by which bone?
A) Zygomatic bone
B) Greater wing of the sphenoid
C) Maxilla anteriorly
D) Temporal bone squama
Answer: B) Greater wing of the sphenoid

42. The dangerous area of the face is classically described as the triangle with apex at the root of the nose and base along the:
A) Mandible body
B) Lines joining angles of the mouth
C) Zygomatic arch
D) Infraorbital margin
Answer: B) Lines joining angles of the mouth

43. The superior labial artery is a branch of which artery?
A) Superior thyroid artery
B) Transverse facial artery
C) Facial artery
D) Infraorbital artery
Answer: C) Facial artery

44. The inferior alveolar nerve courses through which bony canal?
A) Infraorbital canal
B) Nasolacrimal canal
C) Mandibular (alveolar) canal
D) Zygomatic canal
Answer: C) Mandibular (alveolar) canal

45. Which branch of V2 supplies the skin of the cheek (zygomatic and prominence area)?
A) Infraorbital nerve only
B) Zygomaticofacial and zygomaticotemporal branches (from V2 via zygomatic nerve)
C) Mental nerve
D) Auriculotemporal nerve
Answer: B) Zygomaticofacial and zygomaticotemporal branches (from V2 via zygomatic nerve)

46. The motor root of the trigeminal nerve (V3) exits the cranial cavity via:
A) Foramen rotundum
B) Foramen ovale
C) Superior orbital fissure
D) Jugular foramen
Answer: B) Foramen ovale

47. A lesion of the mandibular division (V3) may affect which muscle of mastication?
A) Buccinator
B) Orbicularis oris
C) Masseter
D) Zygomaticus major
Answer: C) Masseter

48. The infraorbital nerve block (for maxillary teeth) is performed by injecting near the infraorbital foramen which is located inferior to which orbital margin?
A) Medial orbital margin
B) Inferior orbital margin
C) Lateral orbital margin
D) Superior orbital margin
Answer: B) Inferior orbital margin

49. The parotid gland surrounds which major vessel as it exits the skull?
A) Internal jugular vein
B) External jugular vein
C) External carotid artery (gives rise to superficial temporal & maxillary within gland)
D) Facial vein
Answer: C) External carotid artery (gives rise to superficial temporal & maxillary within gland)

50. The mandibular foramen is on the:
A) Lateral surface of the maxilla
B) Medial aspect of the ramus of mandible
C) Anterior surface of the mandible body
D) Inferior border of mandible near symphysis
Answer: B) Medial aspect of the ramus of mandible

51. The facial nerve branch that supplies the posterior belly of digastric and stylohyoid is the:
A) Buccal branch
B) Temporal branch
C) Cervical branch
D) Branch to posterior digastric/stylohyoid (direct branch of facial) — often recorded as stylohyoid branch
Answer: D) Branch to posterior digastric/stylohyoid (direct branch of facial) — often recorded as stylohyoid branch

52. The masseter muscle elevates the mandible and is primarily innervated by:
A) Facial nerve (VII)
B) Mandibular division of trigeminal (V3)
C) Hypoglossal nerve (XII)
D) Accessory nerve (XI)
Answer: B) Mandibular division of trigeminal (V3)

53. The nasolabial fold deepens with aging because of loss of support from which structure?
A) Buccinator muscle only
B) Subcutaneous fat and ligamentous attachments around the zygomaticus and levator complexes
C) Parotid duct obstruction
D) Increased masseter tone
Answer: B) Subcutaneous fat and ligamentous attachments around the zygomaticus and levator complexes

54. The inferior orbital fissure transmits which structure relevant to facial sensation?
A) Maxillary artery
B) Infraorbital nerve (V2) and zygomatic nerve branches
C) Ophthalmic vein only
D) Facial nerve fibers
Answer: B) Infraorbital nerve (V2) and zygomatic nerve branches

55. Which muscle functions to evert and protrude the lower lip and is clinically tested by asking the patient to pout?
A) Platysma
B) Mentalis
C) Depressor labii inferioris
D) Levator labii superioris
Answer: B) Mentalis

56. The root of the nose’s skin receives sensory fibers from which branch of V1?
A) Lacrimal nerve
B) External nasal (from anterior ethmoidal branch of V1)
C) Supraorbital nerve
D) Zygomaticotemporal nerve
Answer: B) External nasal (from anterior ethmoidal branch of V1)

57. In a parotidectomy, preservation of which structure is most critical to preserve facial expression?
A) Auriculotemporal nerve
B) Retromandibular vein
C) Facial nerve trunk and branches
D) Great auricular nerve
Answer: C) Facial nerve trunk and branches

58. The frontal belly of occipitofrontalis elevates the eyebrows. Which nerve branch innervates it?
A) Buccal branch
B) Temporal branch of facial nerve
C) Auriculotemporal nerve
D) Marginal mandibular branch
Answer: B) Temporal branch of facial nerve

59. The sensory supply to the skin of the chin is by the mental nerve which is a terminal branch of:
A) Maxillary nerve (V2)
B) Inferior alveolar nerve (branch of mandibular, V3)
C) Greater auricular nerve
D) Zygomaticofacial nerve
Answer: B) Inferior alveolar nerve (branch of mandibular, V3)

60. The supratrochlear and supraorbital nerves are branches of:
A) Maxillary nerve (V2)
B) Ophthalmic nerve (V1)
C) Mandibular nerve (V3)
D) Facial nerve (VII)
Answer: B) Ophthalmic nerve (V1)

61. The angular vein is formed by the union of the facial vein and which venous tributary near the medial canthus?
A) Superficial temporal vein
B) Supraorbital vein
C) Maxillary vein
D) Pterygoid plexus
Answer: B) Supraorbital vein

62. The levator anguli oris elevates the angle of the mouth and is innervated by which facial nerve branch?
A) Buccal branch
B) Cervical branch
C) Temporal branch
D) Auriculotemporal nerve
Answer: A) Buccal branch

63. The condylar process of the mandible articulates with which cranial structure?
A) Maxillary sinus
B) Mandibular fossa of the temporal bone
C) Zygomatic arch
D) Sphenoid greater wing
Answer: B) Mandibular fossa of the temporal bone

64. The stylomandibular ligament is a thickening of which fascia?
A) Investing layer of deep cervical fascia
B) Parotid capsule / investing fascia
C) Prevertebral fascia
D) Pterygomandibular raphe
Answer: B) Parotid capsule / investing fascia

65. The parotid gland is derived embryologically from which germ layer?
A) Neural crest
B) Notochord
C) Ectoderm (oral epithelium)
D) Endoderm
Answer: C) Ectoderm (oral epithelium)

66. The infraorbital artery is a branch of which vessel?
A) Facial artery
B) Maxillary artery (infraorbital branch)
C) Superficial temporal artery
D) Ophthalmic artery
Answer: B) Maxillary artery (infraorbital branch)

67. The marginal mandibular branch of the facial nerve is at risk during surgery near which landmark?
A) Zygomatic arch
B) Inferior border of mandible near its angle
C) Supraorbital rim
D) Foramen ovale
Answer: B) Inferior border of mandible near its angle

68. The pterygomandibular raphe serves as an attachment for which two muscles?
A) Masseter and temporalis
B) Superior pharyngeal constrictor and buccinator
C) Mylohyoid and geniohyoid
D) Lateral pterygoid and medial pterygoid
Answer: B) Superior pharyngeal constrictor and buccinator

69. The blood supply to the parotid gland is primarily from which arteries?
A) Facial and lingual arteries only
B) Branches of the external carotid: superficial temporal and transverse facial (and maxillary)
C) Ophthalmic artery alone
D) Internal carotid branches
Answer: B) Branches of the external carotid: superficial temporal and transverse facial (and maxillary)

70. Which muscle is responsible for wrinkling the skin of the chin and protruding the lower lip?
A) Depressor anguli oris
B) Mentalis
C) Depressor labii inferioris
D) Orbicularis oris
Answer: B) Mentalis

71. The buccal fat pad provides gliding surface for which muscle and is important in infants for suckling?
A) Masseter
B) Buccinator
C) Orbicularis oculi
D) Platysma
Answer: B) Buccinator

72. The zygomatic arch is formed by the zygomatic bone and which process of the temporal bone?
A) Styloid process
B) Mastoid process
C) Zygomatic process of temporal bone
D) Squamous portion only
Answer: C) Zygomatic process of temporal bone

73. The parotid duct crosses which muscle approximately at its anterior border?
A) Masseter
B) Buccinator (pierces it to open into oral cavity)
C) Orbicularis oris
D) Zygomaticus major
Answer: A) Masseter
(It runs over the masseter then pierces the buccinator to open opposite the upper second molar.)
Answer: A) Masseter

74. The pterygoid plexus of veins communicates with the cavernous sinus via which vein?
A) Facial vein directly
B) Superior ophthalmic vein only
C) Emissary veins and the inferior ophthalmic vein
D) External jugular vein
Answer: C) Emissary veins and the inferior ophthalmic vein

75. Which bone forms the anterior part (body) of the zygomatic arch?
A) Temporal bone
B) Zygomatic bone
C) Maxilla
D) Frontal bone
Answer: B) Zygomatic bone

76. The deep facial vein passes between which two structures to reach the pterygoid plexus?
A) Masseter and buccinator
B) Buccinator and pterygoid muscles (through infratemporal fossa)
C) Parotid gland and mandible
D) Orbicularis oculi and zygomaticus
Answer: B) Buccinator and pterygoid muscles (through infratemporal fossa)

77. The lower eyelid sensation is from which nerve?
A) Supraorbital nerve
B) Infraorbital nerve (V2)
C) Auriculotemporal nerve
D) Mental nerve
Answer: B) Infraorbital nerve (V2)

78. The blood supply to the skin of the forehead is primarily from which artery?
A) Superficial temporal artery only
B) Supratrochlear and supraorbital branches of ophthalmic artery (from internal carotid)
C) Facial artery only
D) Maxillary artery only
Answer: B) Supratrochlear and supraorbital branches of ophthalmic artery (from internal carotid)

79. A lesion of the chorda tympani would affect taste from:
A) Posterior one-third of tongue
B) Anterior two-thirds of tongue (taste fibers)
C) Entire tongue motor function
D) Only salivation from parotid gland
Answer: B) Anterior two-thirds of tongue

80. The deep part of the facial vein drains into which deeper venous structure facilitating spread of infection to the cavernous sinus?
A) External jugular vein
B) Pterygoid venous plexus
C) Superficial temporal vein only
D) Occipital vein
Answer: B) Pterygoid venous plexus

81. The angular artery is a terminal branch of which artery and supplies structures near the medial canthus?
A) Superficial temporal artery
B) Facial artery
C) Maxillary artery
D) Ophthalmic artery
Answer: B) Facial artery

82. The zygomaticus major is used in facial reanimation surgeries to restore smile because it:
A) Closes eyelids
B) Elevates angle of mouth (smiling muscle)
C) Protrudes lower lip
D) Compresses cheeks
Answer: B) Elevates angle of mouth (smiling muscle)

83. The venous drainage of the upper lip is primarily through which vein?
A) Superior thyroid vein
B) Superior labial vein to facial vein
C) Inferior labial vein only
D) External jugular vein directly
Answer: B) Superior labial vein to facial vein

84. Which muscle lies deep to the buccal fat pad and forms the lateral wall of the oral cavity?
A) Masseter
B) Buccinator
C) Superior constrictor
D) Temporalis
Answer: B) Buccinator

85. The foramen cecum region of the skull is related to venous passage to the superior sagittal sinus via which emissary vein that can be a route for infection to the cranial cavity from the face?
A) Parietal emissary vein only
B) Vein of the foramen cecum (emissary vein from nasal region)
C) Ophthalmic vein only
D) Facial vein directly
Answer: B) Vein of the foramen cecum (emissary vein from nasal region)

86. The inferior labial artery is a branch of which artery?
A) Superficial temporal artery
B) Facial artery
C) Maxillary artery
D) Lingual artery
Answer: B) Facial artery

87. The parotid plexus (branching of facial nerve) is located within which structure?
A) Buccinator muscle
B) Parotid gland substance (parotid sheath)
C) Masseter muscle
D) Submandibular gland
Answer: B) Parotid gland substance (parotid sheath)

88. A deep laceration over the zygomatic region that severs the zygomaticofacial nerve would cause loss of sensation where?
A) Lower lip
B) Cheek prominence (over the zygomatic bone)
C) Tip of nose
D) Scalp vertex
Answer: B) Cheek prominence (over the zygomatic bone)

89. The orbital septum functions clinically to:
A) Supply blood to eyelids
B) Limit spread of infection from eyelids to orbit
C) Anchor the eyeball to the skull
D) Control tear drainage
Answer: B) Limit spread of infection from eyelids to orbit

90. The superior temporal line is an attachment site for which muscle important in mastication?
A) Masseter
B) Buccinator
C) Temporalis
D) Lateral pterygoid
Answer: C) Temporalis

91. The submandibular gland drains saliva into the oral cavity via which duct?
A) Parotid (Stensen’s) duct
B) Wharton’s (submandibular) duct
C) Sublingual duct only
D) Duct of Rivinus
Answer: B) Wharton’s (submandibular) duct

92. The marginal mandibular nerve travels superficial to which muscle before supplying lower lip muscles?
A) Masseter
B) Platysma and superficial fascia along the mandible
C) Buccinator
D) Orbicularis oculi
Answer: B) Platysma and superficial fascia along the mandible

93. The root of the zygomatic arch is palpated anterior to which ear landmark?
A) Lobule of ear
B) External acoustic meatus
C) Mastoid tip
D) Styloid process
Answer: B) External acoustic meatus

94. The frontonasal prominence in embryology forms which of the following facial structures?
A) Lower lip and chin
B) Forehead, bridge of nose, and medial/lateral nasal prominences
C) Maxillary teeth only
D) Hyoid bone
Answer: B) Forehead, bridge of nose, and medial/lateral nasal prominences

95. The stylomastoid foramen is located between which two bony landmarks?
A) Greater wing of sphenoid and zygomatic arch
B) Styloid and mastoid processes of temporal bone
C) Mastoid process and occipital condyle
D) Foramen magnum and jugular foramen
Answer: B) Styloid and mastoid processes of temporal bone

96. The levator labii superioris elevates the upper lip; its paralysis would most affect which action?
A) Smiling only
B) Raising the upper lip during expressions and exposing maxillary teeth
C) Closing the eyes
D) Protruding the lower lip
Answer: B) Raising the upper lip during expressions and exposing maxillary teeth

97. The buccal nerve (sensory) is a branch of which division of trigeminal nerve?
A) Ophthalmic (V1)
B) Mandibular (V3)
C) Maxillary (V2)
D) Facial nerve (VII)
Answer: B) Mandibular (V3)

98. The orbital septum attaches to which margin of the orbit and prevents orbital fat prolapse into the eyelids?
A) Superior orbital fissure
B) Orbital rim periosteum (orbital margins)
C) Infraorbital foramen
D) Supraorbital notch only
Answer: B) Orbital rim periosteum (orbital margins)

99. The posterior auricular branch of the facial nerve supplies which muscle involved in ear movement?
A) Sternocleidomastoid only
B) Posterior auricular muscle and occipital belly of occipitofrontalis
C) Masseter
D) Stylopharyngeus
Answer: B) Posterior auricular muscle and occipital belly of occipitofrontalis

100. The nasolacrimal duct drains tears into the inferior meatus of the nose and opens into which bony structure?
A) Sphenoidal sinus
B) Inferior meatus of nasal cavity (lateral nasal wall)
C) Middle meatus
D) Superior meatus
Answer: B) Inferior meatus of nasal cavity (lateral nasal wall)