The most abundant group of fibres in the PDL are_____________?
The most abundant group of fibres in the PDL are_____________?
A. Trans-septal
B. Horizontal
C. Oblique
D. Apical
Oral Histology
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True about osteoclasts_____________?
True about osteoclasts_____________?A. Monocytes are precursor cells of osteoclasts
B. The plasma membrane of osteoclasts adjacent to bone that is being resorbed is known as striated or ruffled border
C. Contain lysosomes with acid phosphates
D. All of the above are true -
Sharpey’s fibres are present in_______________?
Sharpey’s fibres are present in_______________?A. Bone
B. Periosteum
C. Periodontal ligament
D. All of the above -
Intermediate plexus is absent in which of the following principle fibres_____________?
Intermediate plexus is absent in which of the following principle fibres_____________?A. Gingival
B. Oblique
C. Horizontal
D. Transseptal -
The calcified mass found in the PDL are_____________?
The calcified mass found in the PDL are_____________?A. Cementicles
B. Osteoblasts
C. Cementoclasts
D. Osteoclasts -
Principal fibres of periodontal ligament are attached to_____________?
Principal fibres of periodontal ligament are attached to_____________?A. Alveolar bone proper
B. Bundle bone
C. Lamellar bone
D. Cortical bone -
Collagen biosynthesis occurs inside the______________?
Collagen biosynthesis occurs inside the______________?A. Chondroblasts
B. Odontoblasts
C. Osteoblasts
D. Fibroblasts -
Bone adjacent to periodontal ligament that contains a great number of sharpey’s fibres is known as______________?
Bone adjacent to periodontal ligament that contains a great number of sharpey’s fibres is known as______________?A. Lamina dura
B. Bundle bone
C. Lamina propria
D. Lamina densa -
Intermediate plexus is seen in the____________?
Intermediate plexus is seen in the____________?A. Cementum
B. PDL
C. Pulp
D. Dentin -
The vascular supply of the periodontal ligament is______________?
The vascular supply of the periodontal ligament is______________?A. Greatest in the middle-third of a single rotted tooth
B. Greatest in the middle-third of a multirooted tooth
C. A net like plexus that runs closer to the cementum than to the bone
D. A net like plexus that runs closer to the bone than to the cementum