520. The lamina propria is:

 A.  epithelial tissue 
 B.  connective tissue 
 C.  adipose tissue 
 D.  muscle tissue 

519. A 5-year-old child develops a febrile disease with cough, a blotchy rash, and cervical and axillary lymphadenopathy. Also noted is an erythematous, maculopapular rash behind the ears and along the hairline, involving the neck and, to a lesser extent, the trunk. Examination of this patient's oropharynx would likely reveal which of the following lesions?

 A.  Adherent thin, whitish patch on gingiva 
 B.  Cold sores on the lips 
 C.  Curdy white material overlying an erythematous base on the oral mucosa 
 D.  Large shallow ulcers on the oral mucosa 
 E.  Multiple small white spots on the buccal mucosa 

519. Delta waves of electroencephalogram have frequency of:

1. More than 14 cycles per second. 
2. Between 8 and 13 cycles per second. 
3. Less than 3.5 cycles per second. 
4. Between 4 and 7 cycles per second.

518. Which of the following cell types show abnormal function when there is a history in a young adult of multiple arm and leg fractures following minor falls, with a slight weakness of facial muscles on the left, mild anemia, and with generalized bony widening with partial obliteration of marrow spaces?

 A.  Granulocytic stem cells 
 B.  Megakaryocytes 
 C.  Plasma cells 
 D.  Osteoblasts 
 E.  Osteoclasts

517. A 5-year-old child has blue-tinged sclera, hearing loss, and small, slightly blue, misshapen teeth. Radiologic studies confirm the presence of numerous fractures of various ages. No significant degree of bruising is seen over sites of recent fracture. The disease this child most likely has is related to abnormal metabolism involving which of the following substances?

 A.  Collagen 
 B.  Glycogen 
 C.  Mucopolysaccharides 
 D. Purines 
 E.  Tyrosine 

516. An animal is made diabetic by injection of a drug that destroys pancreatic ß cells. Removal of which of the following organs would most likely produce a decrease in blood glucose concentration in this animal?

A.  Anterior pituitary   
B.  Colon   
C.  Gonads   
D.  Kidney   
E.  Pancreas

508. A major sensory innervation of the temporomandibular joint is derived from the

1. great auricular nerve.
2. auriculotemporal nerve.
3. inferior alveolar nerve.
4. temporal branches of the facial nerve.

507. A fracture of the hamulus affects the action of which of the following muscles?

A. Superior constrictor of the pharynx
B. Levator veli palatini
C. Tensor veli palatini
D. Salpingopharyngeus
E. Buccinator

506. A disturbance in cartilage formation in a fetus results in deformities of theA disturbance in cartilage formation in a fetus results in deformities of the

1. sphenoid and zygomatic bones.

2. axial skeleton and the base of the skull.

3. axial skeleton and the flat bones of the skull.

4. petrous portion of the temporal bones and the parietal bones.

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FOR MORE IN DENTISTRY: VISIT RxDENTISTRY LOVEHUES DENTAL MATRIX

(151-160)151. Gram-negative anaerobic cocci are all except

      a. Veillonella                  b. Ruminococcus

      c. Megasphaera             d. None of the above

152. The mucous membrane which covers the alveolar process to the necks of the teeth

a.     May be divided into the epimysin and fornix

b.     May be divided into the alveolar mucosa and gingival

c.     Is the tubercle of the oral mucosa

d.     Is none of the above

153. The blood dyscrasia which has racial predilection is

a.       Sickle cell anemia            b. Thrombocytopenic purpura

c.    Hemphilia                         d.  cryoglobulinemia

154. Congenital micrognathia usually occurs in association with:

a.     Pierre Robin syndrome

b.     Trauma to temporomandibular joint

c.     Parry-Romberg syndrome

d.     Double lip

155. In the cap stage, which of the following cell types can be recognized in the enamel organ?

a.     Outer enamel epithelium, inner enamel epithelium, and stelalte reticulum

b.     Outer enamel epithelium and inner enamel epithelium

c.     Outer enamel epithelium, inner enamel epithelium, and stratum intermedium

d.     Stellate reticulum and dental papilla

156. Acute osteomyelitis has which of the following characteristics?

a.     Is produced by beta – hemolytic streptococcus and pneumococcus

b.     Necrosis of marrow with cellular reaction occurs

c.     Sequestrum, suppuration

d.     All of the above

157. It is customary to refer to airway ventilation as

       a. Alveolar spaces            b. Inspired volume

       c. Free space                   d. Dead space

158. Firm pressure with the tip of the finger along a line where the dental arch joins the body of the mandible will reveal a sensitive spout about 2.5 cm lateral to the midline. This is the site of emergence of

a.     The oral vestibule

b.     The mental nerve from the mental foramen

c.     The fauces                            d. The chin

159. Which of the following is the principal action of ammonia in syncope

a.     Respiratory stimulation

b.     Vasomotor stimulation

c.     Improvement in nerve conduction

d.     Cardiac stimulation

160. Radiographs of a patient demonstrated dense radiopaque cotton-wool appearance of the mandible and pronounced hypercementosis. These findings are suggestive of

a.     Osteitis deformans            b.   Torus mandibular is

b.     Complex composite odontoma   d.  Osteopertrosis

85.Axial bones in skull are:

1. 8. 2. 14.

3. 22. 4. 28.

ANS. 4

FOR MORE IN DENTISTRY: VISIT

RxDENTISTRY
LOVEHUES
DENTAL MATRIX

84.Which of the following amino acids would most likely be found on the surface of a protein molecule?

A. Alanine B. Arginine
C. Isoleucine D. Leucine
E. Phenylalanine

The correct answer is B. This question requires two logical steps. First, you need to appreciate that hydrophilic amino acids are more likely to appear on the surface of a protein molecule, whereas hydrophobic amino acids are most likely be found in the interior. Next, you need to figure out which of the amino acids listed is hydrophilic. If you recall that arginine is a basic amino acid that is positively charged at physiologic pH, you should be able to answer this question right away.

All the other choices have neutral side chains and are uncharged at physiologic pH. They would most likely be found in the hydrophobic core of the protein structure. Alanine (choice A), isoleucine (choice C), and leucine (choice D) all have aliphatic side chains; phenylalanine (choice E) and tryptophan have aromatic side chains.

FOR MORE IN DENTISTRY: VISIT

RxDENTISTRY
LOVEHUES
DENTAL MATRIX

83.Which of the following will cause reduction of the size of the pulp chamber in mid-life?

A. Formation of primary dentin
B. Formation of secondary dentin
C. Internal resorption
D. External resorption
E. Pulp fibrosis

The correct answer is B. Primary dentin (choice A) surrounds the pulp chamber when the tooth is
first formed and erupts. It is the initial dentin that makes up the base of both the crown and root. If the
young tooth has a given size pulp chamber, further dentin formation, secondary dentin, later in life, will
begin to fill the chamber with dentin, making it smaller. Internal resorption (choice C) is loss of dentin,
resulting in a larger pulp chamber. External resorption (choice D) involves the exterior of the root and
does not change the pulp chamber size. Pulp fibrosis (choice E) would change the histology of the cells in the chamber, but not the chamber's size


FOR MORE IN DENTISTRY: VISIT

RxDENTISTRY
LOVEHUES
DENTAL MATRIX

81.In restoring a mandibular first molar, lingual cusps are important for which movement?

A. Centric occlusion B. Protrusive
C. Retrusive D. Working E. Nonworking

ANS. D. To answer this question, place your own teeth in centric occlusion(maximum intercuspation). Notice that the occlusion is held in place by the lingual cusps of maxillary teeth and the buccal cusps of mandibular teeth. Mandibular lingual cusps are not in contact. In protrusion, the anterior teeth act to separate the maxilla and mandible as the mandible moves forward. The anterior teeth act as guides in retrusion as well (try it). So far the mandibular lingual cusps are not involved. If you make a left working movement (slide your mandible left), notice that the mandibular lingual cusps on the left, drag against the lingual side of the maxillary lingual cusps. In the nonworking side (in this case, the right side), the mandibular lingual cusps move AWAY from contact.


FOR MORE IN DENTISTRY: VISIT

RxDENTISTRY
LOVEHUES
DENTAL MATRIX