Pulp MCQs
Oral Histology MCQs

Pulp MCQs _ Oral Histology MCQs

1. 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 layers of nerves is formed by network of peripheral axons located adjacent to cell rich zone
   D. All of the above
   
2. 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 contains many dentinal tubules
   
3. The diameter of the largest arterial vessels in the pulp range from:
   A. 50-100 μm
   B. 101-150 μm
   C. 151-200 μm
   D. 201-250 μm
   
4. Dystrophic calcification is seen most commonly in which of the following oral tissues:
   A. Enamel
   B. Pulp
   C. Dentin
   D. Periodontal ligament
   
5. Unmyelinated nerve fibres 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
   
6. Protein secreted by odontoblast:
   A. Chitin
   B. Keratin
   C. Collagen
   D. Elastin
   
7. 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
   
8. 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
   
9. The 2nd most prominent cells in pulp are:
   A. Fibroblasts
   B. defense cells
   C. Odontoblasts
   D. Histocytes or resting wandering cell
   
10. The total volumes of all permanent pulp organ:
    A. 0.38 cc
    B. 0.58 cc
    C. 0.02 cc
    D. 3.8 cc
    
11. Aging process affects pulp tissue by:
    A. Decreasing the size and shape of pulp tissue and cellular component
    B. Increase cellular component at the expenses of fibre component
    C. Increases vascularity of the pulp
    D. Decrease the calcific component of the pulp
    
12. Pulp tissue contains all except:
    A. Fibroblasts
    B. Capillary
    C. Osteoblasts
    D. Ameloblasts
    
13. Propriceptors are seen in all except:
    A. Skeletal muscle
    B. TMJ
    C. Pulp
    D. None of the above
    
14. Pericytes are found:
    A. In thymus
    B. Around capillaries of pulp
    C. In gallbladder
    D. Along with heparin on surface of mast cells
    
15. The cells of the dental pulp which are responsible for the deposition of reparative dentin are:
    A. Osteoblasts
    B. Odontoblasts
    C. Ameloblasts
    D. Osteocytes
    
16. 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
    
17. Odontoblasts are derived from:
    A. Undifferentiated mesenchymal
    B. Histocytes
    C. Macrophages
    D. Lymphocytes
    
18. 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
    
19. The dental pulp contains nerve endings/receptors for:
    A. Pain
    B. Pressure
    C. Proprioception
    D. Temperature
    
20. Pain originate in the 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. Meisseners corpuscles at cell rich zone
    
21. Vitality of pulp depends on:
    A. Blood supply
    B. Nerve supply
    C. Lymphatic supply
    D. All of the above
    
22. The primary response of the pulp to tissue destruction is:
    A. Necrosis
    B. Ulceration
    C. Calcific degeneration
    D. Inflammation
    
23. The plexus of Rashkov is present in which of the following zones in pulp:
    A. Cell free zone
    B. Cell rich zone
    C. Odontoblastic zone
    D. Pulp core
    
24. Size of pulp chamber:
    A. Increases with age
    B. Decreases with age
    C. Increased in some cases and decreases in some cases
    D. None of the above
    
25. The average life time of primary pulp in oral cavity is:
    A. 8.3 years
    B. 2 years
    C. 7 years
    D. 3 years
    
26. The fibroblasts associated with capillaries are:
    A. Plasma cell
    B. Histocytes
    C. Lymphocytes
    D. Pericytes
    
27. 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
    
28. The number of pulp organs in a person in:
    A. 32
    B. 50
    C. 52
    D. 62
    
29. The cell free zone in pulp lies:
    A. Above odontoblast
    B. Below odontoblast
    C. In radicular pulp
    D. In pulp horn
    
30. Cells occurring in greatest number in pulp are:
    A. Cementoblasts
    B. Fibroblasts
    C. Osteoblasts
    D. Ameloblasts
    
31. The odontoblasts killed during cavity preparation are derived from:
    A. Unaffected odontoblasts from the pulp
    B. Undifferentiated cells
    C. Histocytes
    D. Osteoblasts
    
32. Histologically the dental pulp most closely resembles:
    A. Nerve tissue
    B. Vascular tissue
    C. Granulation tissue
    D. Loose connective tissue
    
33. The dental pulp is derived form:
    A. Dental papilla
    B. Dental sac
    C. Odontoblasts
    D. Stellate reticulum
    
34. Weil’s zone of pulp is:
    A. Cell degenerated zone
    B. Cell rich zone
    C. Cell regenerated zone
    D. cell free zone
    
35. The primary function of the dental pulp is:
    A. Nutritive
    B. Production of dentin
    C. Production of enamel
    D. Vascular supply to the teeth
    
36. All of the following are true about functions of dental pulp except:
    A. Formation of dentin
    B. Nerve supply to dentin
    C. Sends impulses to CNS
    D. Nerve supply to enamel through fibers
    
37. Which of the following structures is not found in a living pulp :
    A. Collagen fibres
    B. Haversian fibres
    C. Non-myelinated nerve fibres
    D. Reticulum