NBDHE Test Questions (Multiple Choice) with all Correct
& 100% Verified Answers |Actual Complete Exam |
Already Graded A+
Which of the following muscles protrude the mandible?
Masseter
Temporalis
Lateral pterygoid
Medial pterygoid ✔Correct Answer-Lateral pterygoid
Which vein of the head and neck is formed by the drainage of venous blood from the pterygoid
plexus?
Lingual vein
Facial vein
Common facial vein
Maxillary vein ✔Correct Answer-Maxillary vein
What bone is the non-articulated bone at the midline inferior to the mandible that also shows
up on panoramic radiographs?
Vomer bone
Zygomatic bone
Hyoid bone
Lacrimal bone ✔Correct Answer-Hyoid bone
Which tooth is considered succedaneous?
#16
#24
#30
#31 ✔Correct Answer-#24
A hygienist is doing an extraoral examination and asks the patient to swallow. She detects
something bilateral of the midline of the cervix, what could she have detected?
Submental lymph nodes
Thyroid gland
Deep cervical lymph nodes
Supraclavicular lymph nodes ✔Correct Answer-Thyroid gland
All of the following are innervated by the hypoglossal nerve EXCEPT:
Hypoglossus
Styloglossus
Genioglossus
,Palatoglossus ✔Correct Answer-Palatoglossus
All of the following are muscles of mastication except:
Medial pterygoid
Masseter
Temporalis
Buccinator ✔Correct Answer-Buccinator
What is the correct direction of the blood flow through the heart?
Right atrium-bicuspid valve-right ventricle-pulmonary artery (deoxygenated blood)-lungs-
pulmonary vein (oxygenated blood)-left atrium-tricuspid valve--left ventrical-aorta
Right atrium-tricuspid valve-right ventricle-pulmonary artery (deoxygenated blood)-lungs-
pulmonary vein (oxygenated blood)-left atrium-mitral valve-left ventricle-aorta ✔Correct
Answer-Right atrium-tricuspid valve-right ventricle-pulmonary artery (deoxygenated blood)-
lungs-pulmonary vein (oxygenated blood)-left atrium-mitral valve-left ventricle-aorta
At the cervical line, a cross section of the maxillary canine would show:
A round shape
An oval shape wider on the lingual than the labial
A triangular shape with a distinctly wider labial surface
An oval shape with a slightly wider labial surface ✔Correct Answer-An oval shape with a
slightly wider labial surface
The genetic information of the cell is located in which of the following structures?
Nucleus only
Nucleoid only
Nuclear membrane only
Nucleus and nucleoid ✔Correct Answer-Nucleus and nucleoid
What does the nucleus and the nucleoid have in common?
They are both organelles
They contain DNA
They are bound by a unit membrane
They are found only in prokaryotic organisms
They are found only in eukaryotic organisms ✔Correct Answer-They contain DNA
The TMJ structure consists of:
One synovial compartment
An upper and lower nonsynovial compartment
Two synovial compartments
Two nonsenovoial compartments ✔Correct Answer-Two synovial compartments
Which of the following signs is not expected to be seen in a temporomandibular joint (TMJ)
disorder?
,Swelling and erythema over joint
Clicking of the joint
Wearing of the occlusal surfaces of the teeth
Limited jaw opening
Crepitus over joint ✔Correct Answer-Swelling and erythema over the joint
What is the most common cause of a dental abscess?
Trauma to the tooth
Ludwig's angina
Extension of the dental caries process into the pulp of the tooth
Bruxism
Facial cellulitis ✔Correct Answer-Extension of the dental caries process into the pulp of the
tooth
Which of the following fiber bundles make up the bulk of the periodontal ligament?
Transseptal fibers
Interradicular fibers
Alveolar crest fibers
Oblique fibers ✔Correct Answer-Oblique fibers
Which tooth is the most common for microdontia?
Maxillary lateral incisor
Maxillary central incisor
Mandibular lateral incisor
Mandibular canine ✔Correct Answer-Maxillary lateral incisor
Which of the following is the only artery to carry deoxygenated blood?
Internal carotid artery
Pulmonary artery
External carotid artery
Opthalmic Artery ✔Correct Answer-Pulmonary artery
Which cranial nerve is a motor nerve, arises from the medulla oblongata, and controls the
muscles of the tongue?
Trigeminal
Hypoglossal
Vagus
Glossopharyngeal ✔Correct Answer-Hypoglossal
What does a pacemaker of the heart replace?
Left ventricle
Aorta
Tricuspid valve
Sinoatrial node (SA node) ✔Correct Answer-Sinoatrial node (SA node)
, Which maxillary tooth has an oblique ridge that runs from the distobuccal cusp to the
mesiolingual cusp?
#13
#14
#15
#16 ✔Correct Answer-#14
If there is a large curve or bend in the root of a tooth, which of the following conditions is
present?
Gemination
Fusion
Conrescence
Dilaceration ✔Correct Answer-Dilaceration
Which organ is most likely to be affected by hepatitits C?
Heart
Liver
Gallbladder
Pancreas ✔Correct Answer-Liver
Which artery provides blood flow to the floor of the mouth?
Internal carotid artery
Facial artery
Lingual artery
Lingual vein ✔Correct Answer-Lingual artery
Which one of these principal fiber groups extends from cementum coronally to bone?
Apical fibers
Oblique fibers
Alveolar crest fibers
Interradicular fibers ✔Correct Answer-Oblique fibers
What type of fluid does the Stenson's duct secrete?
Serous fluid only
Mucous fluid only
Mixed fluid secretion (serous and mucus)
None of the above ✔Correct Answer-Serous fluid only
Which gland secretes the largest portion of saliva in the mouth?
Sublingual gland
Submandibular gland
Partotid gland
Adrenal gland ✔Correct Answer-Submandibular gland
& 100% Verified Answers |Actual Complete Exam |
Already Graded A+
Which of the following muscles protrude the mandible?
Masseter
Temporalis
Lateral pterygoid
Medial pterygoid ✔Correct Answer-Lateral pterygoid
Which vein of the head and neck is formed by the drainage of venous blood from the pterygoid
plexus?
Lingual vein
Facial vein
Common facial vein
Maxillary vein ✔Correct Answer-Maxillary vein
What bone is the non-articulated bone at the midline inferior to the mandible that also shows
up on panoramic radiographs?
Vomer bone
Zygomatic bone
Hyoid bone
Lacrimal bone ✔Correct Answer-Hyoid bone
Which tooth is considered succedaneous?
#16
#24
#30
#31 ✔Correct Answer-#24
A hygienist is doing an extraoral examination and asks the patient to swallow. She detects
something bilateral of the midline of the cervix, what could she have detected?
Submental lymph nodes
Thyroid gland
Deep cervical lymph nodes
Supraclavicular lymph nodes ✔Correct Answer-Thyroid gland
All of the following are innervated by the hypoglossal nerve EXCEPT:
Hypoglossus
Styloglossus
Genioglossus
,Palatoglossus ✔Correct Answer-Palatoglossus
All of the following are muscles of mastication except:
Medial pterygoid
Masseter
Temporalis
Buccinator ✔Correct Answer-Buccinator
What is the correct direction of the blood flow through the heart?
Right atrium-bicuspid valve-right ventricle-pulmonary artery (deoxygenated blood)-lungs-
pulmonary vein (oxygenated blood)-left atrium-tricuspid valve--left ventrical-aorta
Right atrium-tricuspid valve-right ventricle-pulmonary artery (deoxygenated blood)-lungs-
pulmonary vein (oxygenated blood)-left atrium-mitral valve-left ventricle-aorta ✔Correct
Answer-Right atrium-tricuspid valve-right ventricle-pulmonary artery (deoxygenated blood)-
lungs-pulmonary vein (oxygenated blood)-left atrium-mitral valve-left ventricle-aorta
At the cervical line, a cross section of the maxillary canine would show:
A round shape
An oval shape wider on the lingual than the labial
A triangular shape with a distinctly wider labial surface
An oval shape with a slightly wider labial surface ✔Correct Answer-An oval shape with a
slightly wider labial surface
The genetic information of the cell is located in which of the following structures?
Nucleus only
Nucleoid only
Nuclear membrane only
Nucleus and nucleoid ✔Correct Answer-Nucleus and nucleoid
What does the nucleus and the nucleoid have in common?
They are both organelles
They contain DNA
They are bound by a unit membrane
They are found only in prokaryotic organisms
They are found only in eukaryotic organisms ✔Correct Answer-They contain DNA
The TMJ structure consists of:
One synovial compartment
An upper and lower nonsynovial compartment
Two synovial compartments
Two nonsenovoial compartments ✔Correct Answer-Two synovial compartments
Which of the following signs is not expected to be seen in a temporomandibular joint (TMJ)
disorder?
,Swelling and erythema over joint
Clicking of the joint
Wearing of the occlusal surfaces of the teeth
Limited jaw opening
Crepitus over joint ✔Correct Answer-Swelling and erythema over the joint
What is the most common cause of a dental abscess?
Trauma to the tooth
Ludwig's angina
Extension of the dental caries process into the pulp of the tooth
Bruxism
Facial cellulitis ✔Correct Answer-Extension of the dental caries process into the pulp of the
tooth
Which of the following fiber bundles make up the bulk of the periodontal ligament?
Transseptal fibers
Interradicular fibers
Alveolar crest fibers
Oblique fibers ✔Correct Answer-Oblique fibers
Which tooth is the most common for microdontia?
Maxillary lateral incisor
Maxillary central incisor
Mandibular lateral incisor
Mandibular canine ✔Correct Answer-Maxillary lateral incisor
Which of the following is the only artery to carry deoxygenated blood?
Internal carotid artery
Pulmonary artery
External carotid artery
Opthalmic Artery ✔Correct Answer-Pulmonary artery
Which cranial nerve is a motor nerve, arises from the medulla oblongata, and controls the
muscles of the tongue?
Trigeminal
Hypoglossal
Vagus
Glossopharyngeal ✔Correct Answer-Hypoglossal
What does a pacemaker of the heart replace?
Left ventricle
Aorta
Tricuspid valve
Sinoatrial node (SA node) ✔Correct Answer-Sinoatrial node (SA node)
, Which maxillary tooth has an oblique ridge that runs from the distobuccal cusp to the
mesiolingual cusp?
#13
#14
#15
#16 ✔Correct Answer-#14
If there is a large curve or bend in the root of a tooth, which of the following conditions is
present?
Gemination
Fusion
Conrescence
Dilaceration ✔Correct Answer-Dilaceration
Which organ is most likely to be affected by hepatitits C?
Heart
Liver
Gallbladder
Pancreas ✔Correct Answer-Liver
Which artery provides blood flow to the floor of the mouth?
Internal carotid artery
Facial artery
Lingual artery
Lingual vein ✔Correct Answer-Lingual artery
Which one of these principal fiber groups extends from cementum coronally to bone?
Apical fibers
Oblique fibers
Alveolar crest fibers
Interradicular fibers ✔Correct Answer-Oblique fibers
What type of fluid does the Stenson's duct secrete?
Serous fluid only
Mucous fluid only
Mixed fluid secretion (serous and mucus)
None of the above ✔Correct Answer-Serous fluid only
Which gland secretes the largest portion of saliva in the mouth?
Sublingual gland
Submandibular gland
Partotid gland
Adrenal gland ✔Correct Answer-Submandibular gland
