HESI DENTAL HYGIENE EXAM NEWEST 2026 ACTUAL
EXAM TEST BANK| COMPLETE 400 REAL EXAM
QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) ALREADY GRADED A+ (BRAND
NEW!!)
1. Which cranial nerve is responsible for innervating the
muscles of mastication?
A) Cranial Nerve V (Trigeminal)
B) Cranial Nerve VII (Facial)
C) Cranial Nerve IX (Glossopharyngeal)
D) Cranial Nerve XII (Hypoglossal)
Answer: A) Cranial Nerve V (Trigeminal)
Rationale: The trigeminal nerve (CN V) is the largest cranial
nerve. Its motor branch innervates the masseter, temporalis,
medial and lateral pterygoids—the four muscles of mastication.
1
,CN VII (Facial) innervates muscles of facial expression. CN IX
provides sensation to the posterior tongue. CN XII controls tongue
movement .
2. Which nerve provides sensory innervation to the
mandibular anterior teeth and the associated facial gingiva?
A) Mental nerve
B) Incisive nerve
C) Inferior alveolar nerve
D) Lingual nerve
Answer: B) Incisive nerve
Rationale: The incisive nerve is the terminal branch of the inferior
alveolar nerve that continues within the mandibular canal to
innervate mandibular incisors, canines, and associated facial
gingiva. The mental nerve supplies the lower lip and chin. The
2
,lingual nerve supplies lingual gingiva and the anterior two-thirds
of the tongue .
3. The foramen ovale transmits which structure?
A) Middle meningeal artery
B) Mandibular division of the trigeminal nerve (V3)
C) Maxillary division of the trigeminal nerve (V2)
D) Ophthalmic division of the trigeminal nerve (V1)
Answer: B) Mandibular division of the trigeminal nerve (V3)
Rationale: The foramen ovale is an opening in the sphenoid
bone that transmits the mandibular division of the trigeminal
nerve (V3), the accessory meningeal artery, and the lesser
petrosal nerve. The middle meningeal artery passes through the
foramen spinosum. V2 passes through the foramen rotundum. V1
passes through the superior orbital fissure .
3
, 4. Which structure forms the floor of the nasal cavity and the
roof of the oral cavity?
A) Palatine bone
B) Hard palate
C) Soft palate
D) Maxilla
Answer: B) Hard palate
Rationale: The hard palate forms the floor of the nasal cavity
and the roof of the oral cavity. It is formed by the palatine
processes of the maxilla (anterior two-thirds) and the horizontal
plates of the palatine bones (posterior one-third). The soft palate
is the posterior muscular portion .
4
EXAM TEST BANK| COMPLETE 400 REAL EXAM
QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) ALREADY GRADED A+ (BRAND
NEW!!)
1. Which cranial nerve is responsible for innervating the
muscles of mastication?
A) Cranial Nerve V (Trigeminal)
B) Cranial Nerve VII (Facial)
C) Cranial Nerve IX (Glossopharyngeal)
D) Cranial Nerve XII (Hypoglossal)
Answer: A) Cranial Nerve V (Trigeminal)
Rationale: The trigeminal nerve (CN V) is the largest cranial
nerve. Its motor branch innervates the masseter, temporalis,
medial and lateral pterygoids—the four muscles of mastication.
1
,CN VII (Facial) innervates muscles of facial expression. CN IX
provides sensation to the posterior tongue. CN XII controls tongue
movement .
2. Which nerve provides sensory innervation to the
mandibular anterior teeth and the associated facial gingiva?
A) Mental nerve
B) Incisive nerve
C) Inferior alveolar nerve
D) Lingual nerve
Answer: B) Incisive nerve
Rationale: The incisive nerve is the terminal branch of the inferior
alveolar nerve that continues within the mandibular canal to
innervate mandibular incisors, canines, and associated facial
gingiva. The mental nerve supplies the lower lip and chin. The
2
,lingual nerve supplies lingual gingiva and the anterior two-thirds
of the tongue .
3. The foramen ovale transmits which structure?
A) Middle meningeal artery
B) Mandibular division of the trigeminal nerve (V3)
C) Maxillary division of the trigeminal nerve (V2)
D) Ophthalmic division of the trigeminal nerve (V1)
Answer: B) Mandibular division of the trigeminal nerve (V3)
Rationale: The foramen ovale is an opening in the sphenoid
bone that transmits the mandibular division of the trigeminal
nerve (V3), the accessory meningeal artery, and the lesser
petrosal nerve. The middle meningeal artery passes through the
foramen spinosum. V2 passes through the foramen rotundum. V1
passes through the superior orbital fissure .
3
, 4. Which structure forms the floor of the nasal cavity and the
roof of the oral cavity?
A) Palatine bone
B) Hard palate
C) Soft palate
D) Maxilla
Answer: B) Hard palate
Rationale: The hard palate forms the floor of the nasal cavity
and the roof of the oral cavity. It is formed by the palatine
processes of the maxilla (anterior two-thirds) and the horizontal
plates of the palatine bones (posterior one-third). The soft palate
is the posterior muscular portion .
4
