881. Role of meckel’s cartilage in development of mandible__________________?
A. It has a major role
B. It has a minor role
C. It does not have any role
D. None of the above

882. Basal bone is____________?
A. That part of the bone embracing apices of root of teeth
B. Lower border of the mandible
C. Ramus of the mandible
D. That part of the bone containing teeth

883. Mature bone is otherwise called as______________?

A. woven bone
B. Irregular bone
C. Lamellar bone
D. Resorbing bone

884. Bone at forming stage has_________________?
A. Osteoclasts, osteoblasts, osteoid
B. Odontoblasts & megakaryocyte
C. Megakaryocytes, osteoblasts, osteoclasts
D. None of the above

885. Calcium content of lamina dura is______________?
A. More than the other parts of alveolar bone
B. Less than the other parts of alveolar bone
C. Same as in other parts of alveolar bone
D. Less than the cementum

886. Fibres which continue from bone to ligament are_______________?
A. Sharpe’s Fibres
B. Tome’s fibres
C. Ray’s fibres
D. All of the above

887. Which of the following enzymes are involved in bone formation________________?
A. Alkaline phosphatase and urease
B. Catalase and phosphorylase
C. Alkaline phosphatase and phosphorylase
D. Acid phosphatase and catalase

888. When osteoblast lay new bone from outside to inside in a osteon, the active formation area is called________________?
A. Haversian cone
B. Filling cone
C. Cutting cone
D. How ships cone

889. The intimal B cells of synovicalmemrbane of temporomandibular joint are_______________?
A. Fibroblast like
B. Macrophage like
C. Lymphocyte like
D. Plasma cell like

890. Maxillary sinus is described as a four sided pyramid containing base, apex, roof and floor. The apex of maxillary sinus extends________________?
A. Laterally into zygomatics process of maxilla
B. Medially into zygomatic process of maxilla
C. Laterally into lateral nasal wall
D. Superiorly into floor of orbit