MCQs on Oral Histology : Dental Pulp

# Which of the following structure is not found in a living pulp ?
A. Collagen fibers
B. Haversian fibers
C. Non myelinated nerve fibers
D. Reticulum

# The dental pulp contains nerve endings / receptors for:
A. Pain
B. Pressure
C. Proprioception
D. Temperature

# The dental pulp is derived from :
A. Dental papilla
B. Dental Sac
C. Odontoblasts
D. Stellate reticulum

# Pulp responds to all stimuli by pain because it has only:
A. Free nerve endings
B. Krause end bulbs
C. Pacinian corpuscle
D. Ruffini corpuscle

# All of the following are true about functions of dental pulp EXCEPT:
A. Formation of dentin
B. Nerve supply to dentin
C. Sends impulse to CNS
D. Nerve supply to enamel through fibers

# Odontoblasts are derived from :
A. Undifferentiated mesenchymal cells
B. Histocytes
C. Macrophages
D. Lymphocytes

# The primary function of the dental pulp is:
A. Nutritive
B. Production of dentin
C. Production of enamel
D. Vascular supply to the teeth

# The radicular pulp is continuous with tissues of the periapical area via the :
A. Pulp canal
B. Pulp chamber
C. Mental foramen
D. Apical foramen

# Weil's zone of pulp is :
A. Cell degenerated zone
B. Cell rich zone
C. Cell regenerated zone
D. Cell free zone

# The cells of the dental pulp which are responsible for the deposition of reparative dentin are:
A. Osteoblasts
B. Odontoblasts
C. Ameloblasts
D. Osteocytes

# Histologically, the dental pulp most closely resembles:
A. Nerve tissue
B. Vascular tissue
C. Granulation tissue
D. Loose connective tissue

# Pericytes are found:
A. In thymus
B. Around capillaries of pulp
C. In gall bladder
D. Along with Heparin on surface of mast cells

# The odontoblasts killed during cavity preparation are derived from :
A. Unaffected odontoblasts from the pulp
B. Undifferentiated cells
C. Histocytes
D. Osteoblasts

# Proprioceptors are seen in all EXCEPT:
A. Skeletal muscle
C. Pulp
D. None of the above

# Cells occurring in greatest number in pulp are :
A. Cementoblasts
B. Fibroblasts
C. Osteoblasts
D. Ameloblasts

# Pulp tissue contains all except:
A. Fibroblast
B. Capillary
C. Collagen
D. Cell rests of Malassez

# The cell free zone in pulp lies:
A. Above odontoblast
B. Below odontoblast
C. In radicular pulp
D. In pulp horn

# Aging process affects pulp tissue by:
A. Decreasing the size and shape of pulp tissue and cellular component
B. Increase cellular component at the expense of fibrous componenet
C. Increases vascularity of the pulp
D. Decreases the calcific component of the pulp

# The number of pulp organs in a person is :
A. 32
B. 20
C. 52
D. 62

# The total volume of all permanent pulp organ is:
A. 0.38 cc
B. 0.58 cc
C. 0.02 cc
D. 3.8 cc

# The size of apical foramen of maxillary teeth in adult is:
A. 0.4 mm
B. 0.3 mm
C. 0.2 mm
D. 0.7 mm

# The second most prominent cells in the pulp are:
A. Fibroblasts
B. Defense cells
C. Odontoblasts
D. Histocytes or resting wandering cell

# The fibroblasts associated with capillaries are:
A. Plasma cell
B. Histocytes
C. Lymphocytes
D. Pericytes

# Which of the following is true ?
A. Pulpal pressure is highest among body tissues
B. Majority of nerve that enter the pulp are non myelinated and are sympathetic in nature
C. Plexus of Rashkow or parietal layer of nerves is formed by network of peripheral axons located adjacent to cell rich zone
D. All of the above

# The average life time of primary pulp in oral cavity is:
A. 8.3 years
B. 5 years
C. 7 years
D. 2 and half years

# Regressive changes in pulp include :
A. Increased fibrotic component
B. Decreased cellular component
C. Calcification in blood vessels near apical foramen
D. All of the above

# Which of the following is not correct ?
A. Free denticles are entirely surrounded by pulp tissue (free of dentin)
B. Embedded denticles are entirely surrounded by dentin (embedded in dentin)
C. Attached denticles are partly fused with dentin
D. False denticles contain many dentinal tubules

# The development of pulp begins :
A. 6th week of IU
B. 8th week of IU
C. 10th week of IU
D. 18th week of IU

# Size of pulp chamber :
A. Increases with age
B. Decreases with age
C. Increases in some cases and decreases in some cases
D. None of the above

# Protein secreted by odontoblast :
A. Chitin
B. Keratin
C. Collagen
D. Elastin

# The primary response of the pulp to tissue destruction is :
A. Necrosis
B. Ulceration
C. Calcific degeneration
D. Inflammation

# Unmyelinated nerve fibers of pulp are:
A. Sensory in nature
B. Respond to hot and cold
C. Carry pain sensation
D. Associated with blood vessels and are sympathetic in nature

# Vitality of pulp depends upon:
A. Blood supply
B. Nerve supply
C. Lymphatic supply
D. All of the above

# Dystrophic calcification is seen most commonly in which of the following oral tissues?
A. Enamel
B. Pulp
C. Dentin
D. Periodontal ligament

# The Plexus of Rashkow is present in which of the following zones in the pulp ?
A. Cell free zone
B. Cell rich zone
C. Odontoblastic zone
D. Pulp core

# The diameter of the largest arterial vessels in the pulp range from:
A. 50-100 miocrometers
B. 101-150 micrometers
C. 151-200 micrometers
D. 201-250 micrometers

# Pain originate in dental pulp due to :
A. Free nerve ending in cell rich zone
B. Free nerve ending at sub odontoblastic layer
C. Krause bulb at the center of the pulp
D. Meissner's corpuscles at cell rich zone

# The pulp stem cells are :
A. Pluripotent in nature
B. Totipotent in nature
C. Multipotent in nature
D. None of the above

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