MCQs on Gastrointestinal tract and Liver Physiology Part 2

# Pepsinogen is activated by :
A. Enterokinase
B. low pH
C. Trypsin
D. Chymotrypsin

# Best stimuli for secretin secretion is :
A. Protein
B. Acid
C. Fat
D. Bile

# Maximum secretory glands in stomach are :
A. Fundic glands
B. Pyloric glands
C. Gastric glands
D. Brunner's Glands

# All are actions of CCK except:
A. Relax lower esophageal sphincter
B. Increased pancreatic secretion
C. Increased gastric secretion
D. Causes gall bladder contraction

# Vagal stimulation following intake of food does not affect secretion of :
A. Stomach
B. Pancreas
C. Parotid
D. Gall bladder

# Gastrin is produced by :
A. Pancreas
B. Gastric antral cells
C. Pituitary
D. All
# Small intestinal peristalsis is controlled by :
A. Myenteric plexus
B. Meissner's plexus
C. Vagus nerve
D. Parasympathetic

# The duodenum secretes a hormone which has the following effects except :
A. Causes copious pancreatic juice rich in bicarbonate and poor in enzymes
B. Increases gastric motility
C. Causes gall bladder to contract and sphincter of oddi to relax
D. Leads to meager flow of pancreatic juice rich in enzymes

# Cholagogues are the substances which cause :
A. Contraction of the gall bladder
B. Increase concentration of the bile
C. Increase secretion of the bile
D. Favours acdification of the bile

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MCQs on Oral Histology Enamel - Part 2

# All are true regarding the enamel spindles except :
A. Produced by ameloblasts
B. Found in the region of cusps
C. Surrounded by inter prismatic enamel
D. Terminated as rounded process

# Ionic exchange between enamel surface and environment :
A. Does not take place once enamel matures
B. Stops after 2 years of eruption
C. Continues till adult life
D. Continues throughout life

# Approximately how many enamel rods will be present in maxillary molar?
A. 5 million
B. 7 million
C. 9 million
D. 12 million

# All are true about the striae of Retzius except:
A. Constitute the rest lines within the enamel rods
B. Have high inorganic content
C. They are areas of increased porosity
D. Allow the movement of water and small ions

# Neonatal lines are found in all of the following except :
A. Enamel of primary incisors
B. Enamel of premanent canines
C. Enamel and dentin of permanent first molars
D. Dentin of permanent mandibular incisors
# On microscopic examination, enamel rods have :
A. Keyhole appearance in cross section
B. Paddle appearance in cross section
C. Lanullate appearance in cross section
D. None of the above

# Which of the following structures is not of ectodermal origin ?
A. Hunter Schreger bands
B. Enamel spindles
C. Enamel Tufts
D. Enamel lamellae

# The formative cells of which of the following dental tissues disappear once tissue is formed ?
A. Enamel
B. Dentin
C. Periodontal ligament
D. Cementum

# Which of the following tissues have no reparative capacity ?
A. Enamel
B. Dentin
C. Cementum
D. Periodontal ligament

# The enamel has no capacity of self repair because :
A. It has only small percent of organic content
B. Its formative cells are lost once it is completely formed
C. It is essentially a keratin tissue and has no blood vessels
D. It has no direct connection with the active cells of the dental pulp

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MCQs on Odontogenic cysts and Tumors - Oral Pathology Part 2

# Ghost (Shadow) cells are seen in:
A. Ameloblastic fibroodontoma
B. Calcifying odontogenic cyst
C. Compound Odontoma
D. All of the above

# A 25 year old male patient reports with a bony expansile swelling of the right body of the mandible & mild paraesthesia of the IDN. OPG shows a multilocular  radiolucency without root resorption.
i) What would be your choice of next investigation?
A. Excision biopsy
B. Aspiration cytology
C. CT scan
D. PET bone scan

ii) A dirty white aspirate with a protein estimation of <4gm% is suggestive of:
A. Ossifying fibroma
B. Dentigerous cyst
C. Mucoepidermoid carcinoma
D. Odontogenic keratocyst

iii) Odontogenic keratocyst is noted for its:
A. Malignant transformation
B. Daughter cysts and high rate of recurrence
C. Impacted teeth
D. Nodal metastasis

iv) Management of odontogenic keratocyst involves :
A. Marsupialization
B. Enucleation
C. Enucleation with peripheral ostectomy
D. Resection and radiation

# Treatment for cementoma : (two answers)
A. No treatment
B. Pulpectomy
C. Resection of jaw
D. None of the above

# Lesions associated with vital tooth :
A. Condensing osteitis
B. Cementoma
C. Periapical abscess
D. None of the above

# Destructively invasive, locally malignant with rare metastasis, the lesion is:
A. Fibroma
B. Ameloblastoma
C. Papilloma
D. None of the above

# Compound odontoma shows :
A. Mixed tissue of dental origin with no rsemblance to tooth structure
B. Numerous tooth like structure with denticles commonly found in maxillary lateral incisors
C. Haphazardly arranged calcified mass
D. all of the above

# Dentigerous cyst is suspected if the follicular space is more than:
A. 2-3 mm
B. 3-4 mm
C. 1-2 mm
D. >5 mm

# After entering a radiolucent lesion in a 30 yr old man, hollow cavity without epithelial lining is seen, the most probable diagnosis is :
A. Aneurysmal bone cyst
B. Static bone cavity
C. Hemorrhagic bone cyst
D. Ameloblastoma

# A patient with ameloblastoma of the jaw can best be treated by:
A. Irradiation
B. Excision
C. Enucleation
D. Surgical removal followed by cauterization
# Dentigerous cyst is associated with the following :
A. Impacted third molar
B. Impacted supernumerary tooth
C. Odontome
D. All of the above

# The epithelium of a dentigerous cyst is :
A. 15-20 cell thick
B.  6-10 cell thick
C. 2-4 cell thick
D. 1-2 cell thick

# Clear cells are commonly seen in which of the following lesions ?
A. Pleomorphic
B. Warthin's tumor
C. Mucoepidermoid
D. Adenomatoid odontogenic tumor

# Multiple periapical radiolicencies are seen in:
A. Jaw cyst basal cell nevus syndrome
B. Odontogenic keratocyst
C. Cherubism
D. Thyroid disorders

# A 36 year old male with an asymptomatic swelling in the body of the mandible with radiographic features of radiolucency with radiopaque flecks is suffering from :
A. Odontogenic keratocyst
B. Calcifying epithelial odontogenic tumor (CEOT)
C. Ameloblastoma
D. None of the above

# Pindborg tumor arises from : (two answers correct)
A. Basal layer of cells
B. Stratum intermedium
C. Stratum corneum
D. Dental lamina

# A six year old child patient has blue dome shaped swelling in posterior mandibular region, what will be the treatment plan?
A. reassure the patient without any treatment
B. Excise the lesion
C. Marsupialization
D. Surgical excision

# The pathogenesis of periapical cyst is :
A. Increased pressure within the cyst
B. Immune mediated bone destruction
C. Proliferation of  epithelium
D. None

# Adenomatoid odontogenic tumor is characterized histologically by :
A. Polyhedral epithelial cells
B. Tubular/duct like cells
C. Stellate shaped cells
D. Stratified squamous epithelial cells

# Cyst arising from dental lamina :
A. Radicular cyst
B. Paradental cyst
C. Eruption cyst
D. Glandular odontogenic cyst
# The most common odontogenic cyst is:
A. Primordial cyst
B. Dentigerous cyst
C. Radicular cyst
D. Mucocele

# Standard treatment of ameloblastoma :
A. Segmental resection with 1 cm of normal bone
B. Enbloc resection
C. Enucleation
D. Enucleation with cauterization

# The most aggressive and destructive cyst is :
A. Periapical cyst
B. Dentigerous cyst
C. Globullomaxillary cyst
D. Nasopalatine cysst

# Facial nerve paralysis is common with:(D>B)
A. Pleomorphic adenoma
B. Epidermoid carcinoma
C. Warthin's tumor
D. Lymphoepithelial carcinoma

# COC is now called as:
A. Odontogenic ghost cell tumor
B. Dentinogenic ghost cell tumor
C. Keratocystic Odontogenic tumor
D. A and C

# Multiple bilateral dentigerous cysts are seen in:
A. Down's syndrome
B. Maroteaux Lamy syndrome
C. Treacher Collins Syndrome
D. Gorlin Goltz syndrome

# The cyst that remains behind in the jaws after removal of the tooth is :
A. Lateral periodontal cyst
B. Radicular cyst
C. Residual cyst
D. None of the above

# Corrugated collagenous rings surrounding lymphocytes and plasma cells in the walls of inflammatory cysts are called:
A. Rushton bodies
B. Hyaline bodies
C. Howell-Jolly Bodies
D. Papenheimer bodies

# Potential complications stemming from dentigerous cyst are:
A. Ameloblastoma
B. Epidermoid carcinoma
C. Mucoepidermoid carcinoma
D. All of the above

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MCQs on Odontogenic Cysts and Tumors - Oral Pathology

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# All of the following lesions may be classified as odontogenic tumors except :
A. Acanthomatous ameloblastoma
B. Branchial cleft cyst
C. Myxoma
D. Simple ameloblastoma

# Bifid ribs, Multiple radiolucent lesions of the jaws, multiple basal cell nevi and falx cerebri calcification are found in :
A. Basal cell nevus syndrome
B. Sturge weber syndrome
C. Horner syndrome
D. Hereditary internal polyposis

# Ameloblastoma most frequently occurs in:
A. Mandibular molar region
B. Maxillary molar region
C. Mandibular premolar region
D. Maxillary premolar region

# Compound odontoma shows on a radiograph as:
A. Supernumerary teeth
B. Radiolucent and radioopaque areas
C. Masses of calcified areas
D. Distinguishable tooth like structures

# Which of the following is true neoplasm of functional cementoblasts ?
A. Periapical cemental dysplasia
B. Familial cemental dysplasia
C. Benign cementoblastoma
D. Hypercementosis

# Botryoid odontogenic cyst is a variant of:
A. Lateral periodontal cyst
B. Apiccal periodontal cyst
C. Gingival cysts of the newborn
D. Gingival cysts of adult

# Eruption cyst:
A. Transforms into dentigerous cyst
B. Regresses after eruption of the tooth
C. Is found in the place of the missing tooth
D. Is a type of dentigerous teeth

# Leisegang rings are found in:
A. Calcifying epithelial odontogenic cyst
B. Primordial cyst
C. Calcifying epithelial odontogenic tumor
D. Odontoma

# Which of the following is an odontogenic tumor ?
A. Arrhenoblastoma
B. Astrocytoma
C. Ameloblastoma
D. Granular cell tumor

# The most common odontogenic tumor which occurs in relation to an unerupted tooth in the anterior maxilla:
A. Odontogenic adenomatoid tumor
B. Odontoma
C. Myxoma
D. Cementifying fibroma

# Which of the following shows the presence of cholesterol crystals ?
A. Keratocyst
B. Periodontal cyst
C. Aneurysmal cyst
D. Hemorrhagic cyst

# Nodular growth of alveolus is seen in :
A. Paget's disease
B. Osteomas
C. Cementifying fibroma
D. All of the above

# Basal layer in primordial cyst is arranged in the form of:
A. Tennis racket
B. Picket fence
C. Linear
D. Irregular
# Which of the following is the most common lesion of the mandible ?
A. Adamantinoma
B. Osteogenic sarcoma
C. Squamous cell carcinoma
D. Osteoclastoma

# One of them is not a true cyst:
A. Hemorrhagic cyst
B. Medial palatal
C. Globulomaxillary
D. Nasolabial

# Dentigerous cyst is likely to cause which neoplasia ?
A. Ameloblastoma
B. Osteogenic sarcoma
C. Squamous cell carcinoma
D. Osteoclastoma

# Odontogenic Keratocyst has the following feature:
A. Occurs due to infection periapically
B. is developmental in origin
C. Can be treated by aspiration
D. Has low recurrence rate

# Primordial cyst develops :
A. in place of missing teeth
B. in teeth in which crown development is completed
C. In periapical region
D. In mandibular body

# Robinson's classification of ameloblastoma does not include :
A. Multicentric
B. Non functional
C. Anatomically benign
D. Clinically persistent

# Radiographic finding in Pindborg tumor is :
A. Sun-burst appearance
B. Onion-peel appearance
C. Driven - snow appearance
D. Cherry - blossom appearance

# Unicentric, non functional, anatomically benign, clinically persistent tumor is :
A. CEOT
B. Enameloma
C. Odontoma
D. Ameloblastoma
# The most ideal explanation for recurrence of odontogenic keratocyst is:
A. Increased mitotic activity of the epithelial lining
B. Friability of the epithelial lining
C. Presence of satellite cysts or daughter cysts
D. Continued proliferation of rests of dental lamina

# The cyst with highest recurrence rate is :
A. Keratocyst
B. Periapical cyst
C. Nasoalveolar cyst
D. Globulomaxillary cyst

# A multilocular cyst of the jaw is most likely:
A. Dental cyst
B. Dentigerous cyst
C. Keratocyst
D. Simple bone cyst

# Keratocyst has all of the following features except:
A. It is more common in mandible
B. May be filled with thin straw colored fluid
C. Low recurrence rate
D. Expansion of bone clinically seen

# Each of the following cyst is associated with an impacted tooth except :
A. Dentigerous cyst
B. Calcifying epithelial odontogenic cyst
C. Keratocyst
D. Primordial cyst

# Which of the following is wrong about keratocyst?
A. has low recurrence rate
B. has low protein content
C. high recurrence rate
D. B and C

# A 40 year old woman has ameloblastoma, the histomorphologic features will be:
A. Peripheral palisading cellular strand with central loose stellate reticulum
B. Peripheral palisading with central stromal retraction artefact
C. Peripheral palisading cellular strand with peripheral loose stellate reticulum
D. Central loose stellate reticulum shows marked nuclear atypia and numerous mitotic

# Which histopathological type of odontogenic keratocyst is commoner, more invasive and has a greater tendency for recurrence ?
A. Orthokeratinized
B. Parakeratinized
C. Non keratinized
D. Dyskeratinized

# Multiple odontogenic keratocyst are associated with:
A. Gardner's syndrome
B. Gorlin-Goltz Syndrome
C. Goldenhar's Syndrome
D. Grinspan syndrome

# Adenomatoid odontogenic tumor is most commonly found in :
A. Anterior mandible
B. Posterior maxilla
C. Anterior maxilla
D. Ramus of the mandible

# Adamantinoma is :
A. A tumour from embryonal cells of developing teeth
B. also known as ameloblastoma
C. is a complication of dentigerous cyst
D. All of these

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