NBDE Part 1 - Dental Anatomy and
Occlusion Exam 2025 Questions and
Answers 100% Pass
Which suprahyoid muscle are innervated by the facial nerve? - ✔✔= Posterior Digastric
and Stylohyoid
Infrahyoid Muscles - ✔✔= DEPRESSORS of the larynx and the hyoid bone
1. Omohyoid (Ana Cervicalis, C1-C3)
2. Sternohyoid (Ana Cervicalis, C1-C3)
3. Sternothyroid (Ana Cervicalis, C1-C3)
4. Thyrohyoid (Ventral Ramus of C1 via Hypoglossal)
Which dental tissue most closely resembles bone? - ✔✔= CEMENTUM
- Cementum has COLLAGEN fibers and CELLULAR COMPONENTS (Cementocytes)
- have Acellular and Cellular cementum
- Cementoid is laid down first
COPYRIGHT © 2025 BY EMILLY CHARLOTTE, ALL RIGHTS RESERVED 1
, Extrinsic Tongue Muscles - ✔✔1. Genioglossus (Hypoglossal)
2. Hyoglossus (Hypoglossal)
3. Styloglossus (Hypoglossal)
4. Palatoglossus (VAGUS NERVE)
Intrinsic Tongue Muscles - ✔✔1. Superior Longitudinal
2. Inferior Longitudinal
3. Transverse Muscle
4. Vertical Muscle
***All of these are innervated by the HYPOGLOSSAL NERVE*****
Muscles of the Mouth/Facial Expression - ✔✔= are innervated by the six branches of
the Facial Nerve
- Posterior muscles = Posterior Auricular
- Anterior Muscles = 5 branches of the PAROTID PLEXUS (Temporal, Zygomatic,
Buccal, Mandibular, Cervical)
*When there's injury to the mandible (i.e., malignancy), to which side will it deviate?* -
✔✔= TO THE SIDE OF INJURY
= if the hypoglossal nerve becomes damaged, the tongue will deviate TOWARD the
affected side
muscles of mastication are innervated by - ✔✔Mandibular Division of the Trigeminal
Nerve (V3)
When the condylar head is fractured, what keeps it in the mandibular fossa? - ✔✔=
Temporomandibular Ligament
What muscle contracts during lateral excursive movements? - ✔✔= the one lateral
pterygoid muscle from the OPPOSITE SIDE
COPYRIGHT © 2025 BY EMILLY CHARLOTTE, ALL RIGHTS RESERVED 2
Occlusion Exam 2025 Questions and
Answers 100% Pass
Which suprahyoid muscle are innervated by the facial nerve? - ✔✔= Posterior Digastric
and Stylohyoid
Infrahyoid Muscles - ✔✔= DEPRESSORS of the larynx and the hyoid bone
1. Omohyoid (Ana Cervicalis, C1-C3)
2. Sternohyoid (Ana Cervicalis, C1-C3)
3. Sternothyroid (Ana Cervicalis, C1-C3)
4. Thyrohyoid (Ventral Ramus of C1 via Hypoglossal)
Which dental tissue most closely resembles bone? - ✔✔= CEMENTUM
- Cementum has COLLAGEN fibers and CELLULAR COMPONENTS (Cementocytes)
- have Acellular and Cellular cementum
- Cementoid is laid down first
COPYRIGHT © 2025 BY EMILLY CHARLOTTE, ALL RIGHTS RESERVED 1
, Extrinsic Tongue Muscles - ✔✔1. Genioglossus (Hypoglossal)
2. Hyoglossus (Hypoglossal)
3. Styloglossus (Hypoglossal)
4. Palatoglossus (VAGUS NERVE)
Intrinsic Tongue Muscles - ✔✔1. Superior Longitudinal
2. Inferior Longitudinal
3. Transverse Muscle
4. Vertical Muscle
***All of these are innervated by the HYPOGLOSSAL NERVE*****
Muscles of the Mouth/Facial Expression - ✔✔= are innervated by the six branches of
the Facial Nerve
- Posterior muscles = Posterior Auricular
- Anterior Muscles = 5 branches of the PAROTID PLEXUS (Temporal, Zygomatic,
Buccal, Mandibular, Cervical)
*When there's injury to the mandible (i.e., malignancy), to which side will it deviate?* -
✔✔= TO THE SIDE OF INJURY
= if the hypoglossal nerve becomes damaged, the tongue will deviate TOWARD the
affected side
muscles of mastication are innervated by - ✔✔Mandibular Division of the Trigeminal
Nerve (V3)
When the condylar head is fractured, what keeps it in the mandibular fossa? - ✔✔=
Temporomandibular Ligament
What muscle contracts during lateral excursive movements? - ✔✔= the one lateral
pterygoid muscle from the OPPOSITE SIDE
COPYRIGHT © 2025 BY EMILLY CHARLOTTE, ALL RIGHTS RESERVED 2
